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Groups > linux.debian.kernel > #72707

Bug#992637: Dropped packets/high latency on USB bus when using USB oscilloscope in bullseye

From Diederik de Haas <didi.debian@cknow.org>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#992637: Dropped packets/high latency on USB bus when using USB oscilloscope in bullseye
Date 2021-08-21 20:10 +0200
Message-ID <CODBn-7u0-9@gated-at.bofh.it> (permalink)
References <COAtP-5mW-3@gated-at.bofh.it> <COCvD-6Cw-1@gated-at.bofh.it> <COAtP-5mW-3@gated-at.bofh.it> <COCvD-6Cw-1@gated-at.bofh.it>
Organization Connecting Knowledge

Cross-posted to 2 groups.

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Control: retitle -1 Too aggressive energy savings on kernel 5.10 cause some devices to malfunction

On zaterdag 21 augustus 2021 18:48:31 CEST Kobus van Schoor wrote:
> Thanks Diederik, that did the trick!
> After setting "Runtime PM for PCI Device Intel Corporation Sunrise
> Point-LP CSME HECI #1" to "Bad" the issue went away :)

Great! Now you've narrowed down the issue and have a workaround.

> I can just set it to "Bad", but it was running fine on "Good" on the
> previous kernels, so I guess there is still some regression here

Agreed, this is (or seems like) a regression.

> (and I don't know what this effect will now have on battery life). 

"Bad" should consume a bit more energy, but you can still keep most on "Good",
so you should still have improved battery life.

> How should I proceed, as the bug's nature has now changed?

I don't know that, hopefully more knowledgeable people will chime in.
I have retitled this bug so it better reflects the problem.
AFAICT, it's still a kernel issue. If not, someone else will probably reassign.

Cheers,
  Diederik

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Thread

Bug#992637: Dropped packets/high latency on USB bus when using USB oscilloscope in bullseye Kobus van Schoor <v.schoor.kobus@gmail.com> - 2021-08-21 16:50 +0200
  Bug#992637: Dropped packets/high latency on USB bus when using USB oscilloscope in bullseye Diederik de Haas <didi.debian@cknow.org> - 2021-08-21 17:10 +0200
    Bug#992637: Dropped packets/high latency on USB bus when using USB oscilloscope in bullseye Kobus van Schoor <v.schoor.kobus@gmail.com> - 2021-08-21 17:50 +0200
      Bug#992637: Dropped packets/high latency on USB bus when using USB oscilloscope in bullseye Diederik de Haas <didi.debian@cknow.org> - 2021-08-21 18:20 +0200
        Bug#992637: Dropped packets/high latency on USB bus when using USB oscilloscope in bullseye Kobus van Schoor <v.schoor.kobus@gmail.com> - 2021-08-21 19:00 +0200
          Bug#992637: Dropped packets/high latency on USB bus when using USB oscilloscope in bullseye Diederik de Haas <didi.debian@cknow.org> - 2021-08-21 20:10 +0200
            Bug#992637: Too aggressive energy savings on kernel 5.10 cause some USB devices to malfunction Diederik de Haas <didi.debian@cknow.org> - 2021-08-21 20:20 +0200
  Processed: Re: Bug#992637: Dropped packets/high latency on USB  bus when using USB oscilloscope in bullseye "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-08-21 20:10 +0200
  Processed: Re: Bug#992637: Too aggressive energy savings on  kernel 5.10 cause some USB devices to malfunction "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-08-21 20:20 +0200
  Bug#992637: same here Thomas Braun <thomas@akwgegner.de> - 2022-07-08 13:20 +0200

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