* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
@ 2016-08-24 15:06 bugzilla-daemon
2016-08-30 0:29 ` bugzilla-daemon
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To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
Bug ID: 97471
Summary: kworker consumes 100% of a cpu core when screen sleeps
with amdgpu kernel driver.
Product: DRI
Version: unspecified
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/AMDgpu
Assignee: dri-devel@lists.freedesktop.org
Reporter: malcolmlewis@opensuse.org
Created attachment 126008
--> https://bugs.freedesktop.org/attachment.cgi?id=126008&action=edit
System information and perf data
Hi
I have configured my system to use the amdgpu kernel driver (note no
experimental support activated) on openSUSE Tumbleweed and running
4.8.0-rc2-3.gda13dfd-default. I did have to re-build the xf86-video-amdgpu to
add my Mullins R5 PCI-IDs. I don't see this when running the radeon driver.
Reproducible: Always
Steps to Reproduce:
1. Boot to Gnome desktop.
2. Set timeout for screen saver 1-15 minutes doesn't matter.
3. From a remote ssh session monitor via top and observe one cpu at ~100% when
screen save activates.
Actual Results:
I ran the following perf command to capture some data which will add as an
attachment;
perf record -F 250 -g -a sleep 10
perf report
Expected Results:
Not consume cpu when idle/screensaver mode.
Attachment includes;
20-amdgpu.conf, dmidecode.txt, perf_data_summary.txt, 4.8.rc3.perf.data,
os-release and Xorg.0.log
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
@ 2016-08-30 0:29 ` bugzilla-daemon
2016-08-30 1:16 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-08-30 0:29 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Please attach the corresponding dmesg output.
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
2016-08-30 0:29 ` bugzilla-daemon
@ 2016-08-30 1:16 ` bugzilla-daemon
2016-09-08 17:20 ` bugzilla-daemon
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To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #2 from Malcolm Lewis <malcolmlewis@opensuse.org> ---
Created attachment 126111
--> https://bugs.freedesktop.org/attachment.cgi?id=126111&action=edit
Ourput from dmesg
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
2016-08-30 0:29 ` bugzilla-daemon
2016-08-30 1:16 ` bugzilla-daemon
@ 2016-09-08 17:20 ` bugzilla-daemon
2016-09-27 21:08 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-09-08 17:20 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #3 from bugs.freedesktop.org@crystalgamma.de ---
I am hitting this bug on Carrizo as well.
In particular, it only takes effect if the disabled output is the integrated
screen (eDP-1). Disabling the DP-1 output (which is actually an HDMI port)
connected to an external screen has no visible effects.
My system is Arch Linux, with the default kernel (Vanilla Linux 4.7.2 with a
one-line patch changing the default log level).
I can provide additional information about my system if necessary.
I can also try out kernel patches if that will help.
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
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2016-09-08 17:20 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-09-27 21:08 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
Alex Deucher <alexdeucher@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |striker@terranforge.com
--- Comment #4 from Alex Deucher <alexdeucher@gmail.com> ---
*** Bug 97849 has been marked as a duplicate of this bug. ***
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
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2016-09-27 21:08 ` bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #5 from Alex Deucher <alexdeucher@gmail.com> ---
For some reason the eDP panel is causing an hotplug interrupt storm when the
panel is disabled. I'm not sure why radeon is behaving differently off hand.
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
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2016-09-27 21:11 ` bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #6 from Alex Deucher <alexdeucher@gmail.com> ---
Does this only happen after a suspend/resume cycle?
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
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2016-09-27 21:56 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-09-27 21:59 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #7 from Striker Leggette <striker@terranforge.com> ---
Fresh boot. This happens as soon as you change the display to _only_ push
HDMI.
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #8 from Alex Deucher <alexdeucher@gmail.com> ---
Created attachment 126818
--> https://bugs.freedesktop.org/attachment.cgi?id=126818&action=edit
possible fix
Does this patch help?
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #9 from Jan Vesely <jv356@scarletmail.rutgers.edu> ---
(In reply to Alex Deucher from comment #8)
> Created attachment 126818 [details] [review]
> possible fix
>
> Does this patch help?
modified version of the patch helps on my setup. (patch modified to apply on
top of ROCK kernel)
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
` (8 preceding siblings ...)
2016-09-28 15:56 ` bugzilla-daemon
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2017-12-20 18:13 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-09-28 22:42 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #10 from Malcolm Lewis <malcolmlewis@opensuse.org> ---
(In reply to Alex Deucher from comment #8)
> Created attachment 126818 [details] [review]
> possible fix
>
> Does this patch help?
Hi
I can confirm the patch also works for me, both with the Laptop screen, laptop
and HDMI attached screen and just the HDMI screen.
Kernel used: 4.8.0-rc8-2.g991ee60-default
OS: openSUSE Tumbleweed 20160927
Note, there is no dce_v6_0.c file, so had to tweak your patch.
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
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2016-09-28 22:42 ` bugzilla-daemon
@ 2016-09-30 15:20 ` bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
--- Comment #11 from Malcolm Lewis <malcolmlewis@opensuse.org> ---
Hi
I would also like to confirm the patch works with the 4.4.21-3-default in
openSUSE Leap 42.2 currently in beta.
I also expect it to work with SLED 12 SP2 when released since they are running
the same kernel, just need to update xf86-video-amdgpu to 1.1.2 for support of
my GPU.
Many thanks :)
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* [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver.
2016-08-24 15:06 [Bug 97471] kworker consumes 100% of a cpu core when screen sleeps with amdgpu kernel driver bugzilla-daemon
` (10 preceding siblings ...)
2016-09-30 15:20 ` bugzilla-daemon
@ 2017-12-20 18:13 ` bugzilla-daemon
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From: bugzilla-daemon @ 2017-12-20 18:13 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=97471
Alex Deucher <alexdeucher@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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