[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

            Bug ID: 93879
           Summary: kernel 4.4.0 causes application lockup and unusable
                    interfaces with radeon hardware
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: jimmy@boombatower.com

Created attachment 121320
  --> https://bugs.freedesktop.org/attachment.cgi?id=121320&action=edit
sh -c "cat /proc/version; ./scripts/ver_linux; cat /proc/cpuinfo; cat
/proc/modules; cat /proc/ioports; cat /proc/iomem; lspci -vvv; cat
/proc/scsi/scsi" > env_info

While running Plasma 5 on 4.4.0 the following occurs periodically:
- chromium locks up
- plasma desktop locks up
- unable to enter password on plasma lock screen

A trigger for locking chromium up seems to be to resize the window by dragging
to screen edges (top to fullscreen, left to tack up left half of screen, etc).
Otherwise, it also seems to somewhat randomly freeze over time.

Reverting to 4.3.x resolves the issues.

Environment
-----------

Distro: openSUSE Tumbleweed (20160121) (x86_64)
Kernel version: 4.4.0-1.2 (works on <= 4.3.3-6)
OpenGL renderer string: Gallium 0.4 on AMD TAHITI (DRM 2.43.0, LLVM 3.7.0)
OpenGL core profile version string: 4.1 (Core Profile) Mesa 11.1.0
Xorg version: 7.6_1.18.0-5.2
xf86-video-ati version: 7.6.1-1.2
DRI3 enabled
Hardware: Radeon HD 7970 ghz

output from kernel bug reporting guide attached

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Sounds like it could be the problem discussed in
http://lists.freedesktop.org/archives/dri-devel/2016-January/098821.html .

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #2 from boombatower <jimmy@boombatower.com> ---
Come to think of it, I did experience that one day but never again.

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #3 from Franklin Titus <cygnix@openmailbox.org> ---
I am having similar issue on AMD HD 7870 GPU, openSUSE Tumbleweed, and Kernel
4.4.0-1.2. I cannot say for sure the trigger, however, once the screen locks
requiring a password, the password field becomes disabled although mouse and
keyboard remain fully functional. In fact, it would seem the entire lock screen
becomes unresponsive to both mouse and keyboard, and CTRL+ALT+Backspace needs
to be employed in order to restart the session.

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #4 from Michel Dänzer <michel@daenzer.net> ---
Can you guys try reverting the commits referenced in
http://lists.freedesktop.org/archives/dri-devel/2016-January/098823.html ?

Alternatively, can you bisect?

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #5 from boombatower <jimmy@boombatower.com> ---
I had planned to test reverting those commits, but after reading through the
thread it seems those commits simply further exposed symptoms of a larger issue
that I believe was fixed in
http://lists.freedesktop.org/archives/dri-devel/2016-January/097880.html.

I am running a 4.4.0 kernel with that patch applied and so far have not seen
the issues I described. Although, ironically, on my first boot I had the stuck
login screen as described in the thread.

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #6 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to boombatower from comment #5)
> I had planned to test reverting those commits, but after reading through the
> thread it seems those commits simply further exposed symptoms of a larger
> issue that I believe was fixed in
> http://lists.freedesktop.org/archives/dri-devel/2016-January/097880.html.
> 
> I am running a 4.4.0 kernel with that patch applied and so far have not seen
> the issues I described. Although, ironically, on my first boot I had the
> stuck login screen as described in the thread.

Different issues.

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #7 from langkamp@tomblog.de ---
Happens for me sometimes too. Just some minutes ago when I right clicked on the
network-manager icon the whole desktop froze more or less. I could move the
mouse pointer some times but nothing was clickable. Could switch to tty1 but
even that was super-slow recognizing keyboard inputs. Needed to 
strg+alt+2xbackspace to kill X. After that everything fine.

Latest openSUSE Tumbleweed x64 on AMD APU A8 7600
Which logs do you need?

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #8 from Michel Dänzer <michel@daenzer.net> ---
(In reply to langkamp from comment #7)
> Which logs do you need?

Does your problem only happen with 4.4 kernels, not 4.3 or older? If so, please
try reverting the changes referenced in comment 4. Otherwise, please file your
own report.

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #9 from langkamp@tomblog.de ---
(In reply to Michel Dänzer from comment #8)
> (In reply to langkamp from comment #7)
> > Which logs do you need?
> 
> Does your problem only happen with 4.4 kernels, not 4.3 or older? If so,
> please try reverting the changes referenced in comment 4. Otherwise, please
> file your own report.

Just found the culprit. At least this time it was a memory leak in a beta of
kdeconnect. It ate up all my memory so the system needed to swap like crazy. It
does only happen when the pc is idling for some time. And this happened with
older kernel too. This morning it was the same cause (I remember kswapd was
active), but I overlooked the memory consumption in top - sorry - my bad. So no
problem here. Maybe its chromium related. I use firefox. I can later check if I
can reproduce with chromium on 4.4, I am currently on 4.2 kernel

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #10 from boombatower <jimmy@boombatower.com> ---
I have been running a patch radeon module (the reverted commits mentioned) on
4.4.0 kernel and have not seen the issues.

See this for the specific revert patches applied:
- https://build.opensuse.org/package/show/home:tiwai:bnc962535/radeon

I'd suggest that Franklin tests it since we have spoken in IRC and see the same
symtoms.

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

--- Comment #11 from langkamp@tomblog.de ---
I tried again with 4.4.0 Tumbleweed on my APU system. I can not trigger the
problem here. Resizing chromium and snapping to the edges etc. all works. Tried
every kwin combination of EGL GLX and openGL 3.1 2.0. So APU Systems may have
never been affected (or the mesa-update 11.1.1 yesterday evening helped).

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[Bug 93879] kernel 4.4.0 causes application lockup and unusable interfaces with radeon hardware

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https://bugs.freedesktop.org/show_bug.cgi?id=93879

Martin Peres <martin.peres@free.fr> changed:

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

--- Comment #12 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
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You can subscribe and participate further through the new bug through this link
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