Created attachment 120801 [details] dmesg description The problem happens with Ubuntu 15.10, stock or with an upgraded graphic stack. The hang happens every time with my config, so it is easy to reproduce. How to reproduce: 1 - Install Steam 2 - Download Dirt Showdown 3 - Start Dirt Showdown with the following launch options: MESA_GL_VERSION_OVERRIDE=4.1 MESA_GLSL_VERSION_OVERRIDE=410 %command% Then the game hangs and exit when showing the AMD logo Tested upgraded components from stock Ubuntu: - Mesa 11.2 (git) from https://launchpad.net/~paulo-miguel-dias/+archive/ubuntu/mesa - Kernel 4.3.3 from http://kernel.ubuntu.com/~kernel-ppa/mainline/ NOTE: The default Ubuntu 15.10 intel driver was crashing KDE plasma, I had to downgrade the driver to xserver-xorg-video-intel_2.99.917-1ubuntu1_amd64.deb from ubuntu 15.04. With the above PPA, i'm now at version 2:2.99.917+git1512160028.8229390~padoka0. Plasma doesn't crash anymore, but I have some corruptions in Google Chrome NOTE2: All other games that were working before the upgrade are still rendering correctly, so this seems to be a bug with something that is used only by Dirt Showdown.
Seems to be fixed in version 11.3 git
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