* [Bug 108941] Enabling PP_OVERDRIVE_MASK with dual monitors causes artifacting
@ 2018-12-04 13:21 bugzilla-daemon
2018-12-04 13:44 ` bugzilla-daemon
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: bugzilla-daemon @ 2018-12-04 13:21 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=108941
Bug ID: 108941
Summary: Enabling PP_OVERDRIVE_MASK with dual monitors causes
artifacting
Product: DRI
Version: XOrg git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: DRM/AMDgpu
Assignee: dri-devel@lists.freedesktop.org
Reporter: boukehaarsma23@gmail.com
Steps to reproduce:
1) Have dual monitors
2) Enable PP_OVERDRIVE_MASK by flipping the appropriate bit in
amdgpu.ppfeaturemask. (For my configuration I used: 0xfffd7fff)
3) See artifacting.
When using default featuremask, or when using a single monitor with the
overdrive bit enabled behaves correctly. I heard multiple people who have the
same issue, so it does not seem related to my setup.
Setup:
RX480
Linux 4.20-rc5
If additional information is needed please let me know.
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* [Bug 108941] Enabling PP_OVERDRIVE_MASK with dual monitors causes artifacting
2018-12-04 13:21 [Bug 108941] Enabling PP_OVERDRIVE_MASK with dual monitors causes artifacting bugzilla-daemon
@ 2018-12-04 13:44 ` bugzilla-daemon
2018-12-04 14:10 ` bugzilla-daemon
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: bugzilla-daemon @ 2018-12-04 13:44 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=108941
--- Comment #1 from Rigo Reddig <rigo.reddig@gmail.com> ---
I've just recently chatted to boukehaarsma23 about it, as it also affects me.
I have uploaded a video of what this looks like which you can see here:
https://www.youtube.com/watch?v=roHXWtHRhyQ
Interestingly the artifact lines appear to be aligned across the screens,
vsync?
The main reason though I first came across this is by trying to manually
downclock my GPU. With 2x 60Hz HDMI 1080p monitors attached the GPU is
constantly in a higher power state (both mclkc and sclk) and wastes a
considerable amount of power at idle. This is not a problem with 1 monitor
attached.
Also of note is that even with 2 monitors attached this does not occur on
Windows where the GPU idles at 300MCLK/300SCLK and is significantly cooler.
For comparison about power, according to my UPS my system idles at 112-128W
when the GPU's are downclocking appropriately(1 monitor). This measurement
matches with Windows where the GPU is downclocking to state 0 appropriately.
When it's not downclocking appropriately (2x monitors) it idles at anywhere
between 160-176Watt.
Setup:
2x RX580 Gigabyte 8G (Monitors both on GPU0)
Linux 4.19.4 (Arch Main)
Latest stable KDE Plasma on X
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^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 108941] Enabling PP_OVERDRIVE_MASK with dual monitors causes artifacting
2018-12-04 13:21 [Bug 108941] Enabling PP_OVERDRIVE_MASK with dual monitors causes artifacting bugzilla-daemon
2018-12-04 13:44 ` bugzilla-daemon
@ 2018-12-04 14:10 ` bugzilla-daemon
2019-10-25 11:59 ` bugzilla-daemon
2019-11-19 9:06 ` bugzilla-daemon
3 siblings, 0 replies; 5+ messages in thread
From: bugzilla-daemon @ 2018-12-04 14:10 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=108941
--- Comment #2 from Rigo Reddig <rigo.reddig@gmail.com> ---
Likely related
https://bugs.freedesktop.org/show_bug.cgi?id=108647
https://bugs.freedesktop.org/show_bug.cgi?id=102646
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^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 108941] Enabling PP_OVERDRIVE_MASK with dual monitors causes artifacting
2018-12-04 13:21 [Bug 108941] Enabling PP_OVERDRIVE_MASK with dual monitors causes artifacting bugzilla-daemon
2018-12-04 13:44 ` bugzilla-daemon
2018-12-04 14:10 ` bugzilla-daemon
@ 2019-10-25 11:59 ` bugzilla-daemon
2019-11-19 9:06 ` bugzilla-daemon
3 siblings, 0 replies; 5+ messages in thread
From: bugzilla-daemon @ 2019-10-25 11:59 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=108941
--- Comment #3 from braiamp@gmail.com ---
Patch https://patchwork.freedesktop.org/patch/314322/ fixes this issue for me.
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^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug 108941] Enabling PP_OVERDRIVE_MASK with dual monitors causes artifacting
2018-12-04 13:21 [Bug 108941] Enabling PP_OVERDRIVE_MASK with dual monitors causes artifacting bugzilla-daemon
` (2 preceding siblings ...)
2019-10-25 11:59 ` bugzilla-daemon
@ 2019-11-19 9:06 ` bugzilla-daemon
3 siblings, 0 replies; 5+ messages in thread
From: bugzilla-daemon @ 2019-11-19 9:06 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=108941
Martin Peres <martin.peres@free.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |MOVED
--- Comment #4 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.
You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/628.
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