Dear Alex, I've built your drm-next-3.19-wip branch (commit be762d181e130d0e6e630f823400e9e1ba3bafd8) and with that kernel and the graphics stack detailed below, I can't run any of my Steam games anymore. All of them immediately go into the defunct state, when their 3D engine is powered up (ie. I get to see the intro/vendor videos but almost nothing after that, including the main menus). When I attach gdb to a game process, the games stop on a SIGPWR. If I hit c I usually get a SIGXCPU next, sometimes it's another SIGPWR. But no matter how often you hit c you always get one of those two signals and the game is just dead. Normal desktop with 3D acceleration and effects (KDE) is working fine. This is a regression over my previous kernel (Git:git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git:v3.18-rc1 + <https://bugs.freedesktop.org/attachment.cgi?id=107451> and <https://bugs.freedesktop.org/attachment.cgi?id=107544>). I didn't have time to bisect this yet, but maybe you have an idea what might cause this right away. I'm also not sure if it's a bug in the DRI portion of the kernel. Is there anything besides a bisect you would need to debug this? Cheers, Kai
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