Acer Aspire 5 R5 4500U (A515-44) ac adapter problem (loading bug?)

pilzsammler
pilzsammler Member Posts: 7 New User
edited October 2023 in 2020 Archives
Hi @ all

I have the following problem, the laptop himself runs very decent and has a nice performance when on battery.
But when i insert the ac adapter, the laptop starts to slow down even when he is not too hot (checked temps and stapm throttle). Hwinfo shows throttle from time to time too even when the highest tempearture is around 50-60°C
This throttle destroys all frametimes and FPS in even low-performance games.
I made a video of it:

When i am on battery, everything is fine. If i start to throttle the cu by hand to around 9w, it runs fine again. (with less performance)

Is this a known bug? Or a workaround to fix this?

I realy like this laptop and the cpu, but this is a pretty heavy bug, since you can only play on battery.Additional Info: I tried it with the 80% limit from Acer and without it :)
Addiotional info, i tried it with the offical 80% battery limit of acer and without. Nothing changed :)

Answers

  • JackE
    JackE ACE Posts: 45,086 Trailblazer
    Check advanced settings of the ControlPanel power plan to make sure CPU is at 100% when plugged in. Jack E/NJ

    Jack E/NJ

  • Also, does the same problem occur when resetting the battery as well?
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  • pilzsammler
    pilzsammler Member Posts: 7 New User
    Thanks for your anwser :)

    Power Plans are fine and at 100% max when plugged in :)
    The CPU starts on battery to boost in CPU-z stresstest to 100% @ 3,9ghz, after plugin it goes down to 75% at 1,8-2,0ghz... When i plug out again, it instantly goes up to 3,9 again :/
  • Also, does the same problem occur when resetting the battery as well?
    https://www.youtube.com/watch?v=NfhgnxUJoZo&list=FLVBqwtBw09_Z9tXo1Injakw&index=8&t=0s
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  • pilzsammler
    pilzsammler Member Posts: 7 New User
    I resetted the battery. It does not helped with the problem :/
    Still throttling under baseclock when attached to ac :/
  • Is the notebook configured for high performance in power options?
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  • ed4myra
    ed4myra Member Posts: 80 Fixer WiFi Icon
    edited June 2020
    hi, i saw your youtube review video, very nice! 

    Based on your reported power draws I would say hardware and thermals wise, your laptop is fine, no problems with thermal sensors whatsoever:
    • GPU heavy = ~20w
    • CPU heavy = ~30w (peak at 40w)
    • Combined workload = 33w
    I have the same 4500U in a lenovo 14" laptop and the power draw and cinebench 20 results are similar.

    With my lenovo laptop there is also a AC/DC mode related throttling bug. The lenovo throttles in battery mode, very likely due to the high power surge above 42W and it will swing then in seconds between 5-42W power draw. Similar behavior has been proven in other laptops of same Lenovo brand.

    So I would not be surprised that your throttling behavior is a BIOS/firmware bug as well, and not unique to your laptop situation.  It can be that they swap the plugged vs battery thermal settings by accident, because OEMs normally would throttle battery mode to save power.

    One more thing you can try. Your bug's behaviour should still persist, even when turbo boost is turned off
  • pilzsammler
    pilzsammler Member Posts: 7 New User
    Thanks for your comment ed4myra :)
    I have no chance to disable turbo in bios. I cant even configure the RAM :P

    I found a workaround for me, i installed "Ryzen Controller" and forced the stapm limits to the stock ones. Apperantly it works now, even after a restart and without the Ryzen controller running. I will have to make some more tests and will give this thread an update then.

    Oh, btw the windows battery profiles nearly have no real impact on my performance. Just battery safe will decrease the light intesity of the screen. Nothing more... :)
  • pilzsammler
    pilzsammler Member Posts: 7 New User
    Ok apperantly it still occurs. Can only be "fixed" with the programm workaround.
    Any chance there will eb a fix (bios?) for it?
    Is it only my PC/Laptop or does it occur more often?
  • Acer launched version 1.06 of the bios in June. What version of bios is installed?
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  • pilzsammler
    pilzsammler Member Posts: 7 New User
    It came with 1.02 and i installed 1.06 after i first noticed the "Battery" problems :)
    Does not changed everything :/
  • Can you send a screenshot of the processor performance that appears in the windows power options?
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    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
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