* [Bug 101653] FAN speed is too high when displays are off
@ 2017-06-29 23:32 bugzilla-daemon
2017-06-30 0:25 ` bugzilla-daemon
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: bugzilla-daemon @ 2017-06-29 23:32 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=101653
Bug ID: 101653
Summary: FAN speed is too high when displays are off
Product: DRI
Version: unspecified
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/AMDgpu
Assignee: dri-devel@lists.freedesktop.org
Reporter: alexander@tsoy.me
Created attachment 132364
--> https://bugs.freedesktop.org/attachment.cgi?id=132364&action=edit
kernel log
While investigating bug #101528, I've noticed another issue: FAN speed is too
high when display are off.
Display is off:
$ cat /sys/class/hwmon/hwmon6/fan1_input
1914
Display is on:
$ cat /sys/class/hwmon/hwmon6/fan1_input
941
In both cases sclk, mclk and pcie are in the same lowest state.
GPU:
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Tonga PRO [Radeon R9 285/380] [1002:6939] (rev f1) (prog-if 00 [VGA
controller])
Subsystem: PC Partner Limited / Sapphire Technology Tonga PRO [Radeon
R9 285/380] [174b:e305]
kernel:
$ uname -r
4.11.7-gentoo
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* [Bug 101653] FAN speed is too high when displays are off
2017-06-29 23:32 [Bug 101653] FAN speed is too high when displays are off bugzilla-daemon
@ 2017-06-30 0:25 ` bugzilla-daemon
2017-06-30 3:03 ` bugzilla-daemon
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2017-06-30 0:25 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=101653
--- Comment #1 from Alexander Tsoy <alexander@tsoy.me> ---
It looks like actual FAN speed doesn't change. It's just reported differently.
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* [Bug 101653] FAN speed is too high when displays are off
2017-06-29 23:32 [Bug 101653] FAN speed is too high when displays are off bugzilla-daemon
2017-06-30 0:25 ` bugzilla-daemon
@ 2017-06-30 3:03 ` bugzilla-daemon
2017-06-30 14:02 ` bugzilla-daemon
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2017-06-30 3:03 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=101653
--- Comment #2 from Alexander Tsoy <alexander@tsoy.me> ---
smu7_get_xclk() returns some crazy values when display is off. And this value
depends on some state that changes every boot.
$ sudo journalctl -b -1 -o cat | grep reference_clock | sort | uniq -c
4 amdgpu: reference_clock = 232169472, tmp = 0
5 amdgpu: reference_clock = 2700, tmp = 0
$ sudo journalctl -b -o cat | grep reference_clock | sort | uniq -c
16 amdgpu: reference_clock = 1305214976, tmp = 0
12 amdgpu: reference_clock = 2700, tmp = 0
So now after reboot I get a different FAN speed when display is off:
$ cat /sys/class/hwmon/hwmon6/fan1_input
1057
When display is on, FAN speed is always consistent.
$ cat /sys/class/hwmon/hwmon6/fan1_input
937
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 101653] FAN speed is too high when displays are off
2017-06-29 23:32 [Bug 101653] FAN speed is too high when displays are off bugzilla-daemon
2017-06-30 0:25 ` bugzilla-daemon
2017-06-30 3:03 ` bugzilla-daemon
@ 2017-06-30 14:02 ` bugzilla-daemon
2017-06-30 23:18 ` bugzilla-daemon
2017-07-24 0:13 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2017-06-30 14:02 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=101653
--- Comment #3 from Alex Deucher <alexdeucher@gmail.com> ---
Created attachment 132374
--> https://bugs.freedesktop.org/attachment.cgi?id=132374&action=edit
possible fix
Depends on attachment 132358.
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 101653] FAN speed is too high when displays are off
2017-06-29 23:32 [Bug 101653] FAN speed is too high when displays are off bugzilla-daemon
` (2 preceding siblings ...)
2017-06-30 14:02 ` bugzilla-daemon
@ 2017-06-30 23:18 ` bugzilla-daemon
2017-07-24 0:13 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2017-06-30 23:18 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=101653
--- Comment #4 from Alexander Tsoy <alexander@tsoy.me> ---
(In reply to Alex Deucher from comment #3)
> Created attachment 132374 [details] [review]
> possible fix
It works. Thanks.
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 101653] FAN speed is too high when displays are off
2017-06-29 23:32 [Bug 101653] FAN speed is too high when displays are off bugzilla-daemon
` (3 preceding siblings ...)
2017-06-30 23:18 ` bugzilla-daemon
@ 2017-07-24 0:13 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2017-07-24 0:13 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=101653
Alexander Tsoy <alexander@tsoy.me> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #5 from Alexander Tsoy <alexander@tsoy.me> ---
The patch is upstream:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=73cc90798ff765341a1d9c2cfe18153ab231c9bb
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