[radeon] plasma screen corruption/nothing to click on except crash notifier -> black screen

[Felix Miata]

Kevin Kofler composed on 2015-08-27 14:06 (UTC-0400):

> Felix Miata wrote:

>> host fi965
>> 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
>> RV370 [Radeon X600/X600 SE] using radeon driver
>> F23 x86_64 freshly dnf upgraded from last same about 10 weeks ago (4.2.rc8
>> kernel)
>> initial screen corruption eventually clears to black
>> plasmashell PID 1621/1667/1687 segmentation fault (11)
>> multi-user.target startup -> startx
>> IIRC, theme selected is whatever alternative to Breeze was found, likely
>> Oxygen If I un-disable compositing (set via xorg.conf*), crash notifier
>> never appears, and screen corruption remains until Ctrl-Alt-BS
>> .xsession-errors is not being written
>> no BRC bug on point less than 5 months touched last found

> That looks like broken OpenGL support in the driver.

> Trying the QT_XCB_USE_SOFTWARE_OPENGL workaround that was implemented for 
> the drivers (like rv200) that don't do OpenGL 2 at all can't hurt. Of course 
> it will be slower, but at least it shouldn't crash…

> (You can try editing /etc/X11/xinit/xinitrc.d/10-qt5-check-opengl2.sh to 
> leave only these lines:
>   QT_XCB_FORCE_SOFTWARE_OPENGL=1
>   export QT_XCB_FORCE_SOFTWARE_OPENGL
> to set the variable unconditionally.)

(Core2Duo 2.67GHz) host fi965 running 64 bit that resulted in me starting
this thread won't POST any more, so instead of following up with host big41,
I pulled the rv370 Radeon from host fi965, put it in (P4 2.8GHz) host gx27b
running 32 bit, did a dnf update of F22, cloned it to another partition, dnf
upgraded that to F23, and that did a tiny bit better. First boot to a plasma
session got an automatic restart of Konsole (which I rarely close before
logging off, expecting as in KDE4 an automatic reopen on login). Following
the appearance of Konsole, the desktop behind it was all corrupted, then went
black. Meanwhile, the panel never showed up, and 3 plasmashell abort popups
appeared.

Restarting plasma after the above suggested edit avoids the corruption and
allows the panel to start and function.

# rpm -qa | sort | egrep 'mesa|v-ati|r-Xorg'
mesa-dri-drivers-11.0.0-0.rc1.1.20150824.fc23.i686
mesa-filesystem-11.0.0-0.rc1.1.20150824.fc23.i686
mesa-libEGL-11.0.0-0.rc1.1.20150824.fc23.i686
mesa-libgbm-11.0.0-0.rc1.1.20150824.fc23.i686
mesa-libGL-11.0.0-0.rc1.1.20150824.fc23.i686
mesa-libglapi-11.0.0-0.rc1.1.20150824.fc23.i686
mesa-libGLES-11.0.0-0.rc1.1.20150824.fc23.i686
mesa-libGLU-9.0.0-9.fc23.i686
mesa-libwayland-egl-11.0.0-0.rc1.1.20150824.fc23.i686
xorg-x11-drv-ati-7.6.0-0.1.20150709git95f5d09.fc23.i686
xorg-x11-server-Xorg-1.17.2-2.fc23.i686
-- 
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words are persuasive." Proverbs 16:21 (New Living Translation)

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/