[Bug 107528] New: Periodic black screen at radeon

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

Bug ID: 107528
Summary: Periodic black screen at radeon
Product: xorg
Version: 7.6 (2010.12)
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: Driver/Radeon
Assignee: xorg-driver-***@lists.x.org
Reporter: ***@cepl.eu
QA Contact: xorg-***@lists.x.org
CC: ***@suse.de

Created attachment 141011
--> https://bugs.freedesktop.org/attachment.cgi?id=141011&action=edit
output of journalctl -xb

Quite often (at this moment, I have even problems to finish this bug report,
but normally it was just around five times daily) the screen gets black. All
programs run (e.g., YouTube in Firefox is still playing), but I haven't found a
way how to get screen reinitialized (Ctrl-Alt-F2 and similar do nothing).

I observe this phenomenon for the last month or a little bit more, and it seems
to be changing with upcoming upgrades of some packages. I would guess kernel,
but I am not sure.

Currently the situation is pretty bad (openSUSE Tumbleweed kernel
4.18.0-rc7-1.g68c9705-default), and it is somehow erratic. Once this happens,
the computer tends to lock up all the time. Next day, computer is happy again
until the first freeze happens again.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #1 from Matej Cepl <***@cepl.eu> ---
Created attachment 141012
--> https://bugs.freedesktop.org/attachment.cgi?id=141012&action=edit
output of dmesg

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #2 from Alex Deucher <***@gmail.com> ---
Can you narrow down what package caused the regression? If so, can you bisect?
There haven't really been many changes to the radeon kernel driver in the last
few years.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #3 from Matej Cepl <***@cepl.eu> ---
(In reply to Alex Deucher from comment #2)

Post by b***@freedesktop.org
Can you narrow down what package caused the regression?

All changes during two months on rather alive distribution? Sorry.

Post by b***@freedesktop.org
If so, can you bisect?

Hardly, I am not sure I have 100% reliable reproducer.

Post by b***@freedesktop.org
There haven't really been many changes to the radeon kernel driver
in the last few years.

Would some dumps from the graphic card or something help? How to obtain them?

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #4 from Alex Deucher <***@gmail.com> ---
(In reply to Matej Cepl from comment #3)

Post by b***@freedesktop.org
(In reply to Alex Deucher from comment #2)

Post by b***@freedesktop.org
Can you narrow down what package caused the regression?

All changes during two months on rather alive distribution? Sorry.

Post by b***@freedesktop.org
If so, can you bisect?

Hardly, I am not sure I have 100% reliable reproducer.

Post by b***@freedesktop.org
There haven't really been many changes to the radeon kernel driver
in the last few years.

Would some dumps from the graphic card or something help? How to obtain them?

Not really. Nothing looks out of the ordinary on your log. As for the
symptoms, when you say black screen, do you mean the screen blanks like
flickers or the signal to the monitor goes away or like someone has colored the
desktop black? Please check that the display cable is not loose where it
connects to the monitor and the graphics card.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #5 from Matej Cepl <***@cepl.eu> ---
(In reply to Alex Deucher from comment #4)

Post by b***@freedesktop.org
As for the
symptoms, when you say black screen, do you mean the screen blanks like
flickers or the signal to the monitor goes away or like someone has colored
the desktop black? Please check that the display cable is not loose where
it connects to the monitor and the graphics card.

Like if somebody coloured the screen black. No flickering, and monitor doesn't
complain about the loss of signal. And all programs run without an interruption
(e.g., Firefox plays YouTube music without problems).

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #6 from Alex Deucher <***@gmail.com> ---
Any messages in the kernel log when the screen goes black?

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #7 from Michel DÀnzer <***@daenzer.net> ---
Please attach the corresponding Xorg log file.

My best guess so far would be this is bug 105381.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #8 from Matej Cepl <***@cepl.eu> ---
(In reply to Michel DÀnzer from comment #7)

Post by b***@freedesktop.org
Please attach the corresponding Xorg log file.
My best guess so far would be this is bug 105381.

Do we have any Xorg.0.log on openSUSE? I thought we are journal only (thus log
in the attachment 141011 ).

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #9 from Michel DÀnzer <***@daenzer.net> ---
(In reply to Matej Cepl from comment #8)

Post by b***@freedesktop.org
Do we have any Xorg.0.log on openSUSE? I thought we are journal only (thus
log in the attachment 141011 [details] ).

I don't see the Xorg logging in there. Check in ~/.local/share/xorg/ .

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #10 from Matej Cepl <***@cepl.eu> ---
Created attachment 141113
--> https://bugs.freedesktop.org/attachment.cgi?id=141113&action=edit
~/.local/share/xorg/Xorg.0.log

I cannot reproduce right now so I am afraid these are not useful.

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #11 from Matej Cepl <***@cepl.eu> ---
Created attachment 141114
--> https://bugs.freedesktop.org/attachment.cgi?id=141114&action=edit
~/.local/share/xorg/Xorg.0.log.old

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

Michel DÀnzer <***@daenzer.net> changed:

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

--- Comment #12 from Michel DÀnzer <***@daenzer.net> ---
Useful enough to confirm it's probably bug 105381, or maybe a known regression
caused by the fix for that. Either way, assuming it's fixed with current
upstream xf86-video-ati Git master. If it still happens with a snapshot of that
which reports version 18.0.99 in the Xorg log, please reopen.

*** This bug has been marked as a duplicate of bug 105381 ***

[b***@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107528

--- Comment #13 from Matej Cepl <***@cepl.eu> ---
It turns out, the hardware might be faulty, so perhaps this is a PEBKAC in the
end.