Created attachment 107425 [details] copy of /sys/class/drm/card0/error Lenovo T530 / Fedora 21 / KDE desktop / Firefox running; hung happened as switching virtual desktops Linux dgilbert-t530 3.16.3-200.fc20.x86_64 #1 SMP Wed Sep 17 22:34:21 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux RPMs: xorg-x11-drv-intel-2.21.15-7.fc20.x86_64 xorg-x11-drv-modesetting-0.8.0-2.fc20.x86_64 xorg-x11-server-common-1.14.4-11.fc20.x86_64 xorg-x11-drv-fbdev-0.4.3-10.fc20.x86_64 xorg-x11-glamor-0.5.1-3.20140115gitfb4d046c.fc20.x86_64 xorg-x11-server-Xorg-1.14.4-11.fc20.x86_64 [19244.184541] [drm] stuck on render ring [19244.187843] [drm] GPU HANG: ecode 0:0xf5f7fffe, in X [1053], reason: Ring hung, action: reset [19244.187848] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [19244.187849] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [19244.187851] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [19244.187853] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [19244.187854] [drm] GPU crash dump saved to /sys/class/drm/card0/error [19246.185097] [drm] Enabling RC6 states: RC6 on, RC6p on, RC6pp off See attached err file.
*** This bug has been marked as a duplicate of bug 77104 ***
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