Created attachment 948121 [details] screen cap of panic message When I wanted to Alt+Tab out of a fullscreen application which was running on my nvidia card with the nouveau driver, the kernel paniced (Mind, this is a dual gpu laptop). I'll attach a jpg with the panic screen (sorry for the quality) and my lshw output. do you need any further information?
Created attachment 948122 [details] lshw I forgot to mention the versions. this is a fully updated F21 as of 2014.10.18. $ uname -a Linux firefly 3.17.1-300.fc21.x86_64 #1 SMP Wed Oct 15 20:53:21 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux in case this is more of a mesa problem: $ rpm -qa | grep mesa-dri-drivers mesa-dri-drivers-10.3-1.20140927.fc21.x86_64 and finally the driver version of nouveau and intel and xorg: xorg-x11-drv-intel-2.99.916-2.fc21.x86_64 xorg-x11-drv-nouveau-1.0.11-1.fc21.x86_64 xorg-x11-server-Xorg-1.16.1-1.fc21.x86_64
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