* [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend
2018-05-12 14:56 [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #2 from Harry Wentland <harry.wentland@amd.com> ---
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 enable sequence.
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* [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend
2018-05-12 14:56 [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend bugzilla-daemon
2018-06-28 22:49 ` bugzilla-daemon
@ 2018-07-01 11:28 ` bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #3 from Toni Spets <toni.spets@iki.fi> ---
Created attachment 140414
--> https://bugs.freedesktop.org/attachment.cgi?id=140414&action=edit
dmesg of a boot with one suspend cycle
This dmesg contains a suspend immediately after the system was booted up. After
resuming both displays lit up and showed the last image before the system was
suspended. The system was completely unresponsible for a while.
Once it was working I had the Xfce hotplug window open and I clicked the extend
button which again got the system stuck for the same amount of time. The
displays were already correctly arranged so it was unneeded but it also
triggered the issue.
As a bonus xrandr shows three outputs connected when I have only two. I'll
attach output of both (DC and non-DC).
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* [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend
2018-05-12 14:56 [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend bugzilla-daemon
2018-06-28 22:49 ` bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #4 from Toni Spets <toni.spets@iki.fi> ---
Created attachment 140415
--> https://bugs.freedesktop.org/attachment.cgi?id=140415&action=edit
xrandr output with DC off
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* [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend
2018-05-12 14:56 [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #5 from Toni Spets <toni.spets@iki.fi> ---
Created attachment 140416
--> https://bugs.freedesktop.org/attachment.cgi?id=140416&action=edit
xrandr output with DC on
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* [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend
2018-05-12 14:56 [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #6 from Mariusz Mazur <mariusz.g.mazur@gmail.com> ---
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 in there, one by Bas Nieuwenhuizen
@chromium and a few by Alex Deucher @amd. Now I need to figure out how to set
up a kernel-building env and test which patch in particular is the one that
breaks everything.
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* [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend
2018-05-12 14:56 [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #7 from Mariusz Mazur <mariusz.g.mazur@gmail.com> ---
Argh, the failures are inconsistent. Serves me right for jumping the gun…
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* [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend
2018-05-12 14:56 [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend bugzilla-daemon
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https://bugs.freedesktop.org/show_bug.cgi?id=104300
--- Comment #8 from Mariusz Mazur <mariusz.g.mazur@gmail.com> ---
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 here apply, please ignore
(no way to delete them unfortunately).
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* [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend
2018-05-12 14:56 [Bug 104300] Kernel 4.15-rc2 on Polaris RX 480 with amdgpu.dc=1 has trouble waking up displays after suspend bugzilla-daemon
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From: bugzilla-daemon @ 2019-11-19 8:27 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=104300
Martin Peres <martin.peres@free.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |MOVED
Status|NEW |RESOLVED
--- Comment #9 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --
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