The speakers randomly give a pop sound (like tuck) while say when I'm browsing facebook and while scrolling I see a video which auto-plays (Even though without Audio). I also hear it randomly at other times whose pattern I have not been able to identify but sometimes before playing an audio and after stopping it.
The audio itself is fine. I can't 'disable enhancements' because I am left with only turning on or off Dolby Audio. I don't see how to update the Dolby Audio within the program itself as it just shows this:
I then tried updating the Realtek SST driver through device manager and it detected a better one however after quite some time of downloading and installing where it felt it was stuck/frozen, I was displayed a message along the lines of a better driver was found but encountered an error while installing.
Rolling back did not work so I uninstalled and restarted. Now it says that the best driver is already installed. I assume the latest one has been installed.
Realtek High Definition Audio (SST) 6.0.1.7801 4/19/2016
There's another Intel Smart Sound Technology, Display Audio and NVidia Virtual Audio Device. All up-to-date.
The audio occasionally fixes itself so I kept running the Latency test until it detected again. The popping didn't happen so it didn't reach red as frequently as when it did before but the program did say that there could be issues in playing real time audio etc.
I ran a DPC Latency and here's the report
Note: My laptop is just a month old which was a display piece at Carrefour prior to me buying.
_________________________________________________________________________________________________________ CONCLUSION _________________________________________________________________________________________________________ Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates. LatencyMon has been analyzing your system for 0:16:44 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________ SYSTEM INFORMATION _________________________________________________________________________________________________________ Computer name: LAPTOP-32D96T7C OS version: Windows 8 , 6.2, build: 9200 (x64) Hardware: Aspire VN7-592G, Acer CPU: GenuineIntel Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz Logical processors: 8 Processor groups: 1 RAM: 16264 MB total
_________________________________________________________________________________________________________ CPU SPEED _________________________________________________________________________________________________________ Reported CPU speed: 2592 MHz
Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
_________________________________________________________________________________________________________ MEASURED INTERRUPT TO USER PROCESS LATENCIES _________________________________________________________________________________________________________ The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
Highest measured interrupt to process latency (µs): 9306.458106 Average measured interrupt to process latency (µs): 14.817806
Highest measured interrupt to DPC latency (µs): 3125.724690 Average measured interrupt to DPC latency (µs): 4.034026
_________________________________________________________________________________________________________ REPORTED ISRs _________________________________________________________________________________________________________ Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
Highest ISR routine execution time (µs): 240.695988 Driver with highest ISR routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Highest reported total ISR routine time (%): 0.015358 Driver with highest ISR total time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation
Total time spent in ISRs (%) 0.017387
ISR count (execution time <250 µs): 156752 ISR count (execution time 250-500 µs): 0 ISR count (execution time 500-999 µs): 0 ISR count (execution time 1000-1999 µs): 0 ISR count (execution time 2000-3999 µs): 0 ISR count (execution time >=4000 µs): 0
_________________________________________________________________________________________________________ REPORTED DPCs _________________________________________________________________________________________________________ DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
Highest DPC routine execution time (µs): 2739.395062 Driver with highest DPC routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Highest reported total DPC routine time (%): 0.107718 Driver with highest DPC total execution time: storport.sys - Microsoft Storage Port Driver, Microsoft Corporation
Total time spent in DPCs (%) 0.408137
DPC count (execution time <250 µs): 4798007 DPC count (execution time 250-500 µs): 0 DPC count (execution time 500-999 µs): 2444 DPC count (execution time 1000-1999 µs): 572 DPC count (execution time 2000-3999 µs): 13 DPC count (execution time >=4000 µs): 0
_________________________________________________________________________________________________________ REPORTED HARD PAGEFAULTS _________________________________________________________________________________________________________ Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
Process with highest pagefault count: vsserv.exe
Total number of hard pagefaults 1400 Hard pagefault count of hardest hit process: 388 Highest hard pagefault resolution time (µs): 945368.334877 Total time spent in hard pagefaults (%): 0.141595 Number of processes hit: 16
_________________________________________________________________________________________________________ PER CPU DATA _________________________________________________________________________________________________________ CPU 0 Interrupt cycle time (s): 72.940193 CPU 0 ISR highest execution time (µs): 240.695988 CPU 0 ISR total execution time (s): 1.257791 CPU 0 ISR count: 142024 CPU 0 DPC highest execution time (µs): 2739.395062 CPU 0 DPC total execution time (s): 16.550116 CPU 0 DPC count: 3284879 _________________________________________________________________________________________________________ CPU 1 Interrupt cycle time (s): 43.952608 CPU 1 ISR highest execution time (µs): 130.378086 CPU 1 ISR total execution time (s): 0.134974 CPU 1 ISR count: 14279 CPU 1 DPC highest execution time (µs): 314.762346 CPU 1 DPC total execution time (s): 1.558941 CPU 1 DPC count: 91953 _________________________________________________________________________________________________________ CPU 2 Interrupt cycle time (s): 33.028503 CPU 2 ISR highest execution time (µs): 54.853395 CPU 2 ISR total execution time (s): 0.004126 CPU 2 ISR count: 440 CPU 2 DPC highest execution time (µs): 2466.473765 CPU 2 DPC total execution time (s): 3.417786 CPU 2 DPC count: 338559 _________________________________________________________________________________________________________ CPU 3 Interrupt cycle time (s): 43.372583 CPU 3 ISR highest execution time (µs): 16.433642 CPU 3 ISR total execution time (s): 0.000097 CPU 3 ISR count: 9 CPU 3 DPC highest execution time (µs): 452.058642 CPU 3 DPC total execution time (s): 1.086398 CPU 3 DPC count: 93755 _________________________________________________________________________________________________________ CPU 4 Interrupt cycle time (s): 37.250762 CPU 4 ISR highest execution time (µs): 0.0 CPU 4 ISR total execution time (s): 0.0 CPU 4 ISR count: 0 CPU 4 DPC highest execution time (µs): 2283.912037 CPU 4 DPC total execution time (s): 4.421490 CPU 4 DPC count: 518249 _________________________________________________________________________________________________________ CPU 5 Interrupt cycle time (s): 50.891643 CPU 5 ISR highest execution time (µs): 0.0 CPU 5 ISR total execution time (s): 0.0 CPU 5 ISR count: 0 CPU 5 DPC highest execution time (µs): 577.912037 CPU 5 DPC total execution time (s): 0.799306 CPU 5 DPC count: 67113 _________________________________________________________________________________________________________ CPU 6 Interrupt cycle time (s): 32.462380 CPU 6 ISR highest execution time (µs): 0.0 CPU 6 ISR total execution time (s): 0.0 CPU 6 ISR count: 0 CPU 6 DPC highest execution time (µs): 1993.274691 CPU 6 DPC total execution time (s): 4.058816 CPU 6 DPC count: 332060 _________________________________________________________________________________________________________ CPU 7 Interrupt cycle time (s): 41.778065 CPU 7 ISR highest execution time (µs): 0.0 CPU 7 ISR total execution time (s): 0.0 CPU 7 ISR count: 0 CPU 7 DPC highest execution time (µs): 664.557099 CPU 7 DPC total execution time (s): 0.899948 CPU 7 DPC count: 74468 _________________________________________________________________________________________________________
@Otoshigami No, I don't get those ticks often. I only get it occasionally while watching videos but since they seem to occur at the same place on the video, I deduce that it is normal for me.
Anyhow, to update anybody else following my thread. I would like to say that my problem has been resolved. I don't hear anymore crackling.
I sent my laptop to my local Acer approved service center and Acer ME connected with their technicians personally to advise on my problem as we had already done the troubleshooting via email.
The service center ordered new speaker and replaced my left speaker which was the faulty one.
My left speaker would not work occasionally. And when it would work, it would crackle. Now that is fixed.
The latency results are also lowered from before but still high. But hey, if I don't hear observe any audio problems or performance issues, then it does not matter to me. I would appreciate if someone more competent would look into these results and convey them to the right channels for driver development and hope to see driver updates soon, if relevant.
_________________________________________________________________________________________________________ CONCLUSION _________________________________________________________________________________________________________ Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. Also one or more ISR routines that belong to a driver running in your system appear to be executing for too long. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates. LatencyMon has been analyzing your system for 0:47:29 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________ SYSTEM INFORMATION _________________________________________________________________________________________________________ Computer name: LAPTOP-32D96T7C OS version: Windows 8 , 6.2, build: 9200 (x64) Hardware: Aspire VN7-592G, Acer CPU: GenuineIntel Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz Logical processors: 8 Processor groups: 1 RAM: 16247 MB total
_________________________________________________________________________________________________________ CPU SPEED _________________________________________________________________________________________________________ Reported CPU speed: 2592 MHz
Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
_________________________________________________________________________________________________________ MEASURED INTERRUPT TO USER PROCESS LATENCIES _________________________________________________________________________________________________________ The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
Highest measured interrupt to process latency (µs): 2232.888889 Average measured interrupt to process latency (µs): 5.621403
Highest measured interrupt to DPC latency (µs): 2196.148148 Average measured interrupt to DPC latency (µs): 1.422277
_________________________________________________________________________________________________________ REPORTED ISRs _________________________________________________________________________________________________________ Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
Highest ISR routine execution time (µs): 2230.611883 Driver with highest ISR routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Highest reported total ISR routine time (%): 0.015619 Driver with highest ISR total time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Total time spent in ISRs (%) 0.026245
ISR count (execution time <250 µs): 337969 ISR count (execution time 250-500 µs): 0 ISR count (execution time 500-999 µs): 228 ISR count (execution time 1000-1999 µs): 5 ISR count (execution time 2000-3999 µs): 2 ISR count (execution time >=4000 µs): 0
_________________________________________________________________________________________________________ REPORTED DPCs _________________________________________________________________________________________________________ DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
Highest DPC routine execution time (µs): 2422.983796 Driver with highest DPC routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Highest reported total DPC routine time (%): 0.026009 Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.
Total time spent in DPCs (%) 0.142478
DPC count (execution time <250 µs): 11645878 DPC count (execution time 250-500 µs): 0 DPC count (execution time 500-999 µs): 3117 DPC count (execution time 1000-1999 µs): 157 DPC count (execution time 2000-3999 µs): 7 DPC count (execution time >=4000 µs): 0
_________________________________________________________________________________________________________ REPORTED HARD PAGEFAULTS _________________________________________________________________________________________________________ Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
Process with highest pagefault count: officeclicktorun.exe
Total number of hard pagefaults 19683 Hard pagefault count of hardest hit process: 9052 Highest hard pagefault resolution time (µs): 22369403018138.10 Total time spent in hard pagefaults (%): 196818.532991 Number of processes hit: 23
_________________________________________________________________________________________________________ PER CPU DATA _________________________________________________________________________________________________________ CPU 0 Interrupt cycle time (s): 155.500856 CPU 0 ISR highest execution time (µs): 2230.611883 CPU 0 ISR total execution time (s): 5.922806 CPU 0 ISR count: 334334 CPU 0 DPC highest execution time (µs): 2422.983796 CPU 0 DPC total execution time (s): 25.310671 CPU 0 DPC count: 10476731 _________________________________________________________________________________________________________ CPU 1 Interrupt cycle time (s): 130.535708 CPU 1 ISR highest execution time (µs): 441.479167 CPU 1 ISR total execution time (s): 0.047581 CPU 1 ISR count: 3286 CPU 1 DPC highest execution time (µs): 1204.663580 CPU 1 DPC total execution time (s): 0.640694 CPU 1 DPC count: 105821 _________________________________________________________________________________________________________ CPU 2 Interrupt cycle time (s): 82.967842 CPU 2 ISR highest execution time (µs): 507.417438 CPU 2 ISR total execution time (s): 0.006882 CPU 2 ISR count: 397 CPU 2 DPC highest execution time (µs): 811.503858 CPU 2 DPC total execution time (s): 1.746758 CPU 2 DPC count: 277068 _________________________________________________________________________________________________________ CPU 3 Interrupt cycle time (s): 133.508671 CPU 3 ISR highest execution time (µs): 227.256944 CPU 3 ISR total execution time (s): 0.004093 CPU 3 ISR count: 164 CPU 3 DPC highest execution time (µs): 1089.878858 CPU 3 DPC total execution time (s): 0.377286 CPU 3 DPC count: 67672 _________________________________________________________________________________________________________ CPU 4 Interrupt cycle time (s): 131.573116 CPU 4 ISR highest execution time (µs): 44.916667 CPU 4 ISR total execution time (s): 0.000447 CPU 4 ISR count: 23 CPU 4 DPC highest execution time (µs): 762.037037 CPU 4 DPC total execution time (s): 1.841624 CPU 4 DPC count: 292915 _________________________________________________________________________________________________________ CPU 5 Interrupt cycle time (s): 162.962593 CPU 5 ISR highest execution time (µs): 0.0 CPU 5 ISR total execution time (s): 0.0 CPU 5 ISR count: 0 CPU 5 DPC highest execution time (µs): 594.234568 CPU 5 DPC total execution time (s): 0.411146 CPU 5 DPC count: 74022 _________________________________________________________________________________________________________ CPU 6 Interrupt cycle time (s): 80.409551 CPU 6 ISR highest execution time (µs): 0.0 CPU 6 ISR total execution time (s): 0.0 CPU 6 ISR count: 0 CPU 6 DPC highest execution time (µs): 1092.838735 CPU 6 DPC total execution time (s): 1.35790 CPU 6 DPC count: 213939 _________________________________________________________________________________________________________ CPU 7 Interrupt cycle time (s): 132.855780 CPU 7 ISR highest execution time (µs): 0.0 CPU 7 ISR total execution time (s): 0.0 CPU 7 ISR count: 0 CPU 7 DPC highest execution time (µs): 636.991512 CPU 7 DPC total execution time (s): 0.787792 CPU 7 DPC count: 140991 _________________________________________________________________________________________________________
Thanks Acer for this platform and the wonderful customer service in my region . I think people should really stop troubleshooting themselves above and beyond what's reasonable and let experts do the job for once.
I was experiencing similar audio popping and it seems like roughly the same time frame. Mine, however, has been resolved somehow now, and I think it may have been the Win10 Anniversary update that did the trick (I got mine early through the Windows Insider Program), though I also performed a windows refresh recently and it could have been that.
It's not a for-sure solution as I'm presenting it, but if you're still experiencing the pops it might be worth trying.
Cheers
Edit: I nearly forgot: I also updated the BIOS from either 1.03 or 1.06 to 1.11 around the same time.
@Otoshigami No, I don't get those ticks often. I only get it occasionally while watching videos but since they seem to occur at the same place on the video, I deduce that it is normal for me.
Anyhow, to update anybody else following my thread. I would like to say that my problem has been resolved. I don't hear anymore crackling.
I sent my laptop to my local Acer approved service center and Acer ME connected with their technicians personally to advise on my problem as we had already done the troubleshooting via email.
The service center ordered new speaker and replaced my left speaker which was the faulty one.
My left speaker would not work occasionally. And when it would work, it would crackle. Now that is fixed.
The latency results are also lowered from before but still high. But hey, if I don't hear observe any audio problems or performance issues, then it does not matter to me. I would appreciate if someone more competent would look into these results and convey them to the right channels for driver development and hope to see driver updates soon, if relevant.
_________________________________________________________________________________________________________ CONCLUSION _________________________________________________________________________________________________________ Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. Also one or more ISR routines that belong to a driver running in your system appear to be executing for too long. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates. LatencyMon has been analyzing your system for 0:47:29 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________ SYSTEM INFORMATION _________________________________________________________________________________________________________ Computer name: LAPTOP-32D96T7C OS version: Windows 8 , 6.2, build: 9200 (x64) Hardware: Aspire VN7-592G, Acer CPU: GenuineIntel Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz Logical processors: 8 Processor groups: 1 RAM: 16247 MB total
_________________________________________________________________________________________________________ CPU SPEED _________________________________________________________________________________________________________ Reported CPU speed: 2592 MHz
Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
_________________________________________________________________________________________________________ MEASURED INTERRUPT TO USER PROCESS LATENCIES _________________________________________________________________________________________________________ The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
Highest measured interrupt to process latency (µs): 2232.888889 Average measured interrupt to process latency (µs): 5.621403
Highest measured interrupt to DPC latency (µs): 2196.148148 Average measured interrupt to DPC latency (µs): 1.422277
_________________________________________________________________________________________________________ REPORTED ISRs _________________________________________________________________________________________________________ Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
Highest ISR routine execution time (µs): 2230.611883 Driver with highest ISR routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Highest reported total ISR routine time (%): 0.015619 Driver with highest ISR total time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Total time spent in ISRs (%) 0.026245
ISR count (execution time <250 µs): 337969 ISR count (execution time 250-500 µs): 0 ISR count (execution time 500-999 µs): 228 ISR count (execution time 1000-1999 µs): 5 ISR count (execution time 2000-3999 µs): 2 ISR count (execution time >=4000 µs): 0
_________________________________________________________________________________________________________ REPORTED DPCs _________________________________________________________________________________________________________ DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
Highest DPC routine execution time (µs): 2422.983796 Driver with highest DPC routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Highest reported total DPC routine time (%): 0.026009 Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.
Total time spent in DPCs (%) 0.142478
DPC count (execution time <250 µs): 11645878 DPC count (execution time 250-500 µs): 0 DPC count (execution time 500-999 µs): 3117 DPC count (execution time 1000-1999 µs): 157 DPC count (execution time 2000-3999 µs): 7 DPC count (execution time >=4000 µs): 0
_________________________________________________________________________________________________________ REPORTED HARD PAGEFAULTS _________________________________________________________________________________________________________ Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
Process with highest pagefault count: officeclicktorun.exe
Total number of hard pagefaults 19683 Hard pagefault count of hardest hit process: 9052 Highest hard pagefault resolution time (µs): 22369403018138.10 Total time spent in hard pagefaults (%): 196818.532991 Number of processes hit: 23
_________________________________________________________________________________________________________ PER CPU DATA _________________________________________________________________________________________________________ CPU 0 Interrupt cycle time (s): 155.500856 CPU 0 ISR highest execution time (µs): 2230.611883 CPU 0 ISR total execution time (s): 5.922806 CPU 0 ISR count: 334334 CPU 0 DPC highest execution time (µs): 2422.983796 CPU 0 DPC total execution time (s): 25.310671 CPU 0 DPC count: 10476731 _________________________________________________________________________________________________________ CPU 1 Interrupt cycle time (s): 130.535708 CPU 1 ISR highest execution time (µs): 441.479167 CPU 1 ISR total execution time (s): 0.047581 CPU 1 ISR count: 3286 CPU 1 DPC highest execution time (µs): 1204.663580 CPU 1 DPC total execution time (s): 0.640694 CPU 1 DPC count: 105821 _________________________________________________________________________________________________________ CPU 2 Interrupt cycle time (s): 82.967842 CPU 2 ISR highest execution time (µs): 507.417438 CPU 2 ISR total execution time (s): 0.006882 CPU 2 ISR count: 397 CPU 2 DPC highest execution time (µs): 811.503858 CPU 2 DPC total execution time (s): 1.746758 CPU 2 DPC count: 277068 _________________________________________________________________________________________________________ CPU 3 Interrupt cycle time (s): 133.508671 CPU 3 ISR highest execution time (µs): 227.256944 CPU 3 ISR total execution time (s): 0.004093 CPU 3 ISR count: 164 CPU 3 DPC highest execution time (µs): 1089.878858 CPU 3 DPC total execution time (s): 0.377286 CPU 3 DPC count: 67672 _________________________________________________________________________________________________________ CPU 4 Interrupt cycle time (s): 131.573116 CPU 4 ISR highest execution time (µs): 44.916667 CPU 4 ISR total execution time (s): 0.000447 CPU 4 ISR count: 23 CPU 4 DPC highest execution time (µs): 762.037037 CPU 4 DPC total execution time (s): 1.841624 CPU 4 DPC count: 292915 _________________________________________________________________________________________________________ CPU 5 Interrupt cycle time (s): 162.962593 CPU 5 ISR highest execution time (µs): 0.0 CPU 5 ISR total execution time (s): 0.0 CPU 5 ISR count: 0 CPU 5 DPC highest execution time (µs): 594.234568 CPU 5 DPC total execution time (s): 0.411146 CPU 5 DPC count: 74022 _________________________________________________________________________________________________________ CPU 6 Interrupt cycle time (s): 80.409551 CPU 6 ISR highest execution time (µs): 0.0 CPU 6 ISR total execution time (s): 0.0 CPU 6 ISR count: 0 CPU 6 DPC highest execution time (µs): 1092.838735 CPU 6 DPC total execution time (s): 1.35790 CPU 6 DPC count: 213939 _________________________________________________________________________________________________________ CPU 7 Interrupt cycle time (s): 132.855780 CPU 7 ISR highest execution time (µs): 0.0 CPU 7 ISR total execution time (s): 0.0 CPU 7 ISR count: 0 CPU 7 DPC highest execution time (µs): 636.991512 CPU 7 DPC total execution time (s): 0.787792 CPU 7 DPC count: 140991 _________________________________________________________________________________________________________
Thanks Acer for this platform and the wonderful customer service in my region . I think people should really stop troubleshooting themselves above and beyond what's reasonable and let experts do the job for once.
FAQ & Answers
Same here. I experience this issue since I bought this laptop.
Please let me know if anybody has a solution to this. My speaker popping has returned back.


I hope the administrator can bring this to the attention of any Acer technician online asap.
I was experiencing similar audio popping and it seems like roughly the same time frame. Mine, however, has been resolved somehow now, and I think it may have been the Win10 Anniversary update that did the trick (I got mine early through the Windows Insider Program), though I also performed a windows refresh recently and it could have been that.
It's not a for-sure solution as I'm presenting it, but if you're still experiencing the pops it might be worth trying.
Cheers
Edit: I nearly forgot: I also updated the BIOS from either 1.03 or 1.06 to 1.11 around the same time.
I have also updated my BIOS, reinstalled, Rolled back drivers and done all the general troubleshooting steps.

Other than Thunderbolt Update issue (which is a story for another thread) and another one.
I hope Acer development team can look into this before this model gets too old, or it already is, perhaps?
Also to add, apart from the crackling. My left speaker randomly decides to switch off. I confirmed with stereo tests that only the right one works.
So I can conclude from a lot of observation that
I really want to claim on my warranty but they format my laptop which I want to avoid!
Hi Shumayal,
Can you check my latest post here: http://community.acer.com/t5/V-and-VN-Series-Laptops/Aspire-VN7-792G-strange-sound/m-p/480187#M14550 and tell me if your problem is the same?
@Otoshigami No, I don't get those ticks often. I only get it occasionally while watching videos but since they seem to occur at the same place on the video, I deduce that it is normal for me.

Anyhow, to update anybody else following my thread. I would like to say that my problem has been resolved. I don't hear anymore crackling.
I sent my laptop to my local Acer approved service center and Acer ME connected with their technicians personally to advise on my problem as we had already done the troubleshooting via email.
The service center ordered new speaker and replaced my left speaker which was the faulty one.
My left speaker would not work occasionally. And when it would work, it would crackle. Now that is fixed.
The latency results are also lowered from before but still high. But hey, if I don't hear observe any audio problems or performance issues, then it does not matter to me. I would appreciate if someone more competent would look into these results and convey them to the right channels for driver development and hope to see driver updates soon, if relevant.
As again, please find the report generated here
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. Also one or more ISR routines that belong to a driver running in your system appear to be executing for too long. At least one detected problem appears to be network related. In case you are using a WLAN adapter, try disabling it to get better results. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for 0:47:29 (h:mm:ss) on all processors.
_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: LAPTOP-32D96T7C
OS version: Windows 8 , 6.2, build: 9200 (x64)
Hardware: Aspire VN7-592G, Acer
CPU: GenuineIntel Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
Logical processors: 8
Processor groups: 1
RAM: 16247 MB total
_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 2592 MHz
Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.
_________________________________________________________________________________________________________
MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
Highest measured interrupt to process latency (µs): 2232.888889
Average measured interrupt to process latency (µs): 5.621403
Highest measured interrupt to DPC latency (µs): 2196.148148
Average measured interrupt to DPC latency (µs): 1.422277
_________________________________________________________________________________________________________
REPORTED ISRs
_________________________________________________________________________________________________________
Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
Highest ISR routine execution time (µs): 2230.611883
Driver with highest ISR routine execution time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Highest reported total ISR routine time (%): 0.015619
Driver with highest ISR total time: ndis.sys - Network Driver Interface Specification (NDIS), Microsoft Corporation
Total time spent in ISRs (%) 0.026245
ISR count (execution time <250 µs): 337969
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 228
ISR count (execution time 1000-1999 µs): 5
ISR count (execution time 2000-3999 µs): 2
ISR count (execution time >=4000 µs): 0
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REPORTED DPCs
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DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
Highest DPC routine execution time (µs): 2422.983796
Driver with highest DPC routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Highest reported total DPC routine time (%): 0.026009
Driver with highest DPC total execution time: rspLLL64.sys - Resplendence Latency Monitoring and Auxiliary Kernel Library, Resplendence Software Projects Sp.
Total time spent in DPCs (%) 0.142478
DPC count (execution time <250 µs): 11645878
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 3117
DPC count (execution time 1000-1999 µs): 157
DPC count (execution time 2000-3999 µs): 7
DPC count (execution time >=4000 µs): 0
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REPORTED HARD PAGEFAULTS
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Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
Process with highest pagefault count: officeclicktorun.exe
Total number of hard pagefaults 19683
Hard pagefault count of hardest hit process: 9052
Highest hard pagefault resolution time (µs): 22369403018138.10
Total time spent in hard pagefaults (%): 196818.532991
Number of processes hit: 23
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PER CPU DATA
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CPU 0 Interrupt cycle time (s): 155.500856
CPU 0 ISR highest execution time (µs): 2230.611883
CPU 0 ISR total execution time (s): 5.922806
CPU 0 ISR count: 334334
CPU 0 DPC highest execution time (µs): 2422.983796
CPU 0 DPC total execution time (s): 25.310671
CPU 0 DPC count: 10476731
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CPU 1 Interrupt cycle time (s): 130.535708
CPU 1 ISR highest execution time (µs): 441.479167
CPU 1 ISR total execution time (s): 0.047581
CPU 1 ISR count: 3286
CPU 1 DPC highest execution time (µs): 1204.663580
CPU 1 DPC total execution time (s): 0.640694
CPU 1 DPC count: 105821
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CPU 2 Interrupt cycle time (s): 82.967842
CPU 2 ISR highest execution time (µs): 507.417438
CPU 2 ISR total execution time (s): 0.006882
CPU 2 ISR count: 397
CPU 2 DPC highest execution time (µs): 811.503858
CPU 2 DPC total execution time (s): 1.746758
CPU 2 DPC count: 277068
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CPU 3 Interrupt cycle time (s): 133.508671
CPU 3 ISR highest execution time (µs): 227.256944
CPU 3 ISR total execution time (s): 0.004093
CPU 3 ISR count: 164
CPU 3 DPC highest execution time (µs): 1089.878858
CPU 3 DPC total execution time (s): 0.377286
CPU 3 DPC count: 67672
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CPU 4 Interrupt cycle time (s): 131.573116
CPU 4 ISR highest execution time (µs): 44.916667
CPU 4 ISR total execution time (s): 0.000447
CPU 4 ISR count: 23
CPU 4 DPC highest execution time (µs): 762.037037
CPU 4 DPC total execution time (s): 1.841624
CPU 4 DPC count: 292915
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CPU 5 Interrupt cycle time (s): 162.962593
CPU 5 ISR highest execution time (µs): 0.0
CPU 5 ISR total execution time (s): 0.0
CPU 5 ISR count: 0
CPU 5 DPC highest execution time (µs): 594.234568
CPU 5 DPC total execution time (s): 0.411146
CPU 5 DPC count: 74022
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CPU 6 Interrupt cycle time (s): 80.409551
CPU 6 ISR highest execution time (µs): 0.0
CPU 6 ISR total execution time (s): 0.0
CPU 6 ISR count: 0
CPU 6 DPC highest execution time (µs): 1092.838735
CPU 6 DPC total execution time (s): 1.35790
CPU 6 DPC count: 213939
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CPU 7 Interrupt cycle time (s): 132.855780
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 636.991512
CPU 7 DPC total execution time (s): 0.787792
CPU 7 DPC count: 140991
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Thanks Acer for this platform and the wonderful customer service in my region