https://bugs.freedesktop.org/show_bug.cgi?id=104300
Martin Peres changed:
What|Removed |Added
Resolution|--- |MOVED
Status|NEW
https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #8 from Mariusz Mazur ---
Ok, I've managed to narrow down my issue to displayport link training code
somehow triggering a monitor disconnect while attempting to wake it up. So my
issue is completely unrelated, none of my comments
https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #7 from Mariusz Mazur ---
Argh, the failures are inconsistent. Serves me right for jumping the gun…
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https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #6 from Mariusz Mazur ---
I found it! Before I knew 4.14 worked fine and 4.15+ introduced this bug.
Now I know precisely which patches:
- 4.14.35 works correctly
- 4.14.36 exhibits this behavior
There are only a few amdgpu patches
https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #5 from Toni Spets ---
Created attachment 140416
--> https://bugs.freedesktop.org/attachment.cgi?id=140416=edit
xrandr output with DC on
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--- Comment #4 from Toni Spets ---
Created attachment 140415
--> https://bugs.freedesktop.org/attachment.cgi?id=140415=edit
xrandr output with DC off
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--- Comment #3 from Toni Spets ---
Created attachment 140414
--> https://bugs.freedesktop.org/attachment.cgi?id=140414=edit
dmesg of a boot with one suspend cycle
This dmesg contains a suspend immediately after the system was booted up.
https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #2 from Harry Wentland ---
Toni, would you be able to post your dmesg log when this happens?
It looks like in Mariusz's case the DP monitor somehow reports as disconnected
when we resume. I wonder if there are issues in our DP
https://bugs.freedesktop.org/show_bug.cgi?id=104300
Bug ID: 104300
Summary: Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has
trouble waking up displays after suspend
Product: DRI
Version: unspecified
Hardware: x86-64
