* [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56
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https://bugs.freedesktop.org/show_bug.cgi?id=107082
--- Comment #1 from Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> ---
This should be fixed with: https://patchwork.freedesktop.org/patch/233283/
The fix is also availble if you use amd-staging-drm-next.
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* [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56
2018-07-01 12:55 [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56 bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=107082
--- Comment #2 from Michel Dänzer <michel@daenzer.net> ---
(In reply to Nicholas Kazlauskas from comment #1)
> This should be fixed with: https://patchwork.freedesktop.org/patch/233283/
> The fix is also availble if you use amd-staging-drm-next.
Since the regression happened in the 4.18 cycle, the fix needs to go to 4.18.
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* [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56
2018-07-01 12:55 [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56 bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=107082
--- Comment #3 from Harry Wentland <harry.wentland@amd.com> ---
Created attachment 140594
--> https://bugs.freedesktop.org/attachment.cgi?id=140594&action=edit
[PATCH] drm/amd/display: Convert 10kHz clks from PPLib into kHz for Vega
Don't think the other patch would apply to 4.18 but this one should. There's
been a bunch of work on the powerplay/DC interface, so this looks different for
4.18 and amd-stg.
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* [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56
2018-07-01 12:55 [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56 bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=107082
--- Comment #4 from mikhail.v.gavrilov@gmail.com ---
(In reply to Harry Wentland from comment #3)
> Created attachment 140594 [details] [review]
> [PATCH] drm/amd/display: Convert 10kHz clks from PPLib into kHz for Vega
>
> Don't think the other patch would apply to 4.18 but this one should. There's
> been a bunch of work on the powerplay/DC interface, so this looks different
> for 4.18 and amd-stg.
I can confirm that this patch fix the issue.
But I did not like one thing:
I decided to check how work VEGA GPU through HDMI and connected the second
monitor via HDMI.
The first that I did not like was that on the first monitor which was connected
via DisplayPort, the scaling setting was reset from 200% to 100%.
The second that I did not like was that when I tried to set the scaling at 200%
through gnome-settings, my computer was hung. I even could not connect through
ssh to look at the kernel log.
I tried to repeat this case but unsuccessfully, but unpleasant residue still
remained.
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* [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56
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https://bugs.freedesktop.org/show_bug.cgi?id=107082
--- Comment #5 from Michel Dänzer <michel@daenzer.net> ---
(In reply to mikhail.v.gavrilov from comment #4)
> The first that I did not like was that on the first monitor which was
> connected via DisplayPort, the scaling setting was reset from 200% to 100%.
Sounds like a GNOME issue. The kernel driver doesn't do any implicit scaling,
it's all up to userspace.
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* [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56
2018-07-01 12:55 [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56 bugzilla-daemon
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From: bugzilla-daemon @ 2018-07-13 9:23 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=107082
--- Comment #6 from mikhail.v.gavrilov@gmail.com ---
(In reply to Michel Dänzer from comment #5)
>
> Sounds like a GNOME issue. The kernel driver doesn't do any implicit
> scaling, it's all up to userspace.
I don't believe that sshd can hang because of gnome-shell bug.
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* [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56
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https://bugs.freedesktop.org/show_bug.cgi?id=107082
--- Comment #7 from Michel Dänzer <michel@daenzer.net> ---
(In reply to mikhail.v.gavrilov from comment #6)
> I don't believe that sshd can hang because of gnome-shell bug.
Sure, I'm only talking about the scaling reset.
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* [Bug 107082] With 4.18 rc kernel stop working video output on AMD GPU Vega 56
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https://bugs.freedesktop.org/show_bug.cgi?id=107082
Martin Peres <martin.peres@free.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |MOVED
Status|NEW |RESOLVED
--- Comment #8 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/439.
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