next@acer 2020

My Device Manager does show "Unknown USB Device (Device Descriptor Request Failed).

SystemSystem Member Posts: 1,410 Practitioner
This discussion was created from comments split from: Predator X34 USB 3.0 Hub Not Working.

Comments

  • HaubitzHaubitz Member Posts: 4 New User
    I have this exact same problem.  What was the solution?  This has never worked since the day I unboxed the monitor brand new.  My Device Manager does show "Unknown USB Device (Device Descriptor Request Failed).  
  • HaubitzHaubitz Member Posts: 4 New User
    edited May 29
    @Acer-Manny

    Can someone please reply to this thread?  The USB hub in the monitor is non-functional.  I've tried downloading drivers from the driver page https://www.acer.com/ac/en/IN/content/support-product/6376?b=1&pn=MM.T3MAA.003;

    but windows says "Windows has determined that the best driver for this device is already installed..." even though it shows up as "Unknown USB Device (Device Descriptor Request Failed)" in Device Manager.  
  • Acer-MannyAcer-Manny Acer Crew, Knowledge Author Posts: 3,238 Acer Crew
    Haubitz said:
    @Acer-Manny

    Can someone please reply to this thread?  The USB hub in the monitor is non-functional.  I've tried downloading drivers from the driver page https://www.acer.com/ac/en/IN/content/support-product/6376?b=1&pn=MM.T3MAA.003;

    but windows says "Windows has determined that the best driver for this device is already installed..." even though it shows up as "Unknown USB Device (Device Descriptor Request Failed)" in Device Manager.  
    Hi Haubitz, i am very sorry to hear you're having this error message when trying to use the USB hub, unfortunately, the Acer community is not a direct portal to customer or technical support, you can wait for a reply from other users or if you need immediate assistance you can contact your local Acer support channels: https://www.acer.com/ac/en/IN/content/service-contact

    Thanks,
    Acer-Manny
  • GAMING6698GAMING6698 Member Posts: 3,371 Supercomputer Wrangler
    @Haubitz did your try this↓
    Open device manager→click on your desktop name→views→show hidden devices→click on action→scan for hardware changes

    If problem still persists then right click on unknown device→select update 
    click on "Yes" if it answers your question.
    God has established his kingdom on earth in such a way that we must ask for help.
    my Acer nitro 5 (AN515-43) userbenchmark

  • HaubitzHaubitz Member Posts: 4 New User
    No, that did not work.  I do see "Generic SuperSpeed USB Hub" in the list in Device Manager, but then I still see the "Unknown USB Device (Device Descriptor Request Failed)" line as well.  Whatever I plug into the hub on the monitor still does not work.  I tried an optical mouse and the led lights do come on, but the mouse is not recognized at all.

    I used the Acer Support chat and the agent told me to mail it in for repair.  What a pain.  I have a feeling that I will get the monitor back and the exact same thing will happen.  I will update this post.
  • HaubitzHaubitz Member Posts: 4 New User
    Update: I got the hub to work.  I first was able to actually borrow a friend's computer and when I plugged the monitor into it the hub worked!  After more troubleshooting, I right-clicked and "Uninstalled Device" on both the "Generic SuperSpeed USB Hub" and "Unknown USB Device (Device Descriptor Request Failed)".

    I did a reboot of the PC.  After bootup, when I plugged in the monitor it detected the hub and all is working.  I also wonder if having the monitor off and unplugged had something to do with it when I moved it over to the other PC to test.
  • billseybillsey ACE Posts: 11,161 Trailblazer
    Very likely it was the latter. Next time you see it, if you see it again, try doing a power reset. Disconnect all cables, then press and hold the power for 30 seconds. Wait for a while (like a few minutes) to make sure all power has bled off, and reconnect everything and turn it back on.
    Click on "Like" if you find my answer useful or click on "Yes" if it answers your question.
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