Radeon R9 270X GPU lockup on power profile change
Submitted by nin..@..on.org
Assigned to Default DRI bug account
When I turn on KDE compositing the desktop freezes more often than not. These freezes can also be provoked when configuring mplayer for GL output and opening a video file. If that alone is not enough, just change repeatedly from window to fullscreen and back. Attaching Xorg.0.log and dmesg of such a crash.
I can reboot the system cleanly using alt+sysrq+r and ctrl+alt+del but any attempts to get a nice backtrace of the X server with gdb failed due to the process hanging in kernel space.
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Curacao XT [Radeon R9 270X]
Downgrading components to openSUSE 13.1 stock versions did not help except for downgrading the kernel to 3.11.