[Bug 66473] New: hdmi oops with mem sleep

[Bug 66473] New: hdmi oops with mem sleep

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=66473

          Priority: medium
            Bug ID: 66473
          Assignee: dri-devel@lists.freedesktop.org
           Summary: hdmi oops with mem sleep
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: adf.lists@gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 81834
  --> https://bugs.freedesktop.org/attachment.cgi?id=81834&action=edit
oops hdmi

RV790  running drm-next as it was on 260613

Have used echo mem > /sys/power/state for some time now, though I don't think
this is a regression - just a situation that I haven't hit before.

Haven't tested every senario but it seems that if I boot and use single DVI
monitor then someone else turns on TV which is connected DVI -> hdmi then if I
use mem sleep I get an oops. If the TV is on already when I boot it doesn't
happen. I am not enabling the TV with xrandr as it's not me that is using it.

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[Bug 66473] hdmi oops with mem sleep

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https://bugs.freedesktop.org/show_bug.cgi?id=66473

--- Comment #1 from Andy Furniss <adf.lists@gmail.com> ---
It seems that this only happens on the second mem sleep - so to trigger it
looks like I need to boot with tv off, turn on tv but not enaable, sleep and
resume, then sleep again will give oops.

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[Bug 66473] hdmi oops with mem sleep

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https://bugs.freedesktop.org/show_bug.cgi?id=66473

--- Comment #2 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to comment #1)
> It seems that this only happens on the second mem sleep - so to trigger it
> looks like I need to boot with tv off, turn on tv but not enaable, sleep and
> resume, then sleep again will give oops.

More testing -

To trigger this I need to resume from mem sleep after hdmi device became active
that wasn't active at boot.

It doesn't matter if it becomes active before I sleep of during sleep - when I
come out of sleep I am then set up for the Oops.

It seems that it's fbcon and nothing to do with sleeping again - I can now
trigger just by switching from X to fbcon VT.

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[Bug 66473] rv790 oops when switching to fbcon after resume from sleep after hdmi became active.

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https://bugs.freedesktop.org/show_bug.cgi?id=66473

Andy Furniss <adf.lists@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|hdmi oops with mem sleep    |rv790 oops when switching
                   |                            |to fbcon after  resume from
                   |                            |sleep after  hdmi became
                   |                            |active.

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[Bug 66473] rv790 oops when switching to fbcon after resume from sleep after hdmi became active.

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=66473

Andy Furniss <adf.lists@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #3 from Andy Furniss <adf.lists@gmail.com> ---
I can't trigger this anymore with current drm-fixes

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