Ok, after some testing with the current version I can say that his is related to the driver version. With the newest driver ( new kernel, Broadwell preliminary hardware support was removed) from freedesktop.org this is not happening anymore. But the Bug seems to be related to all new HD5500 GPUs. This will be a problem for may users in the future, as the 3D acceleration is slowing down after this.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1451165 Title: GPU HANG after suspend/resume Status in xserver-xorg-video-intel package in Ubuntu: Confirmed Bug description: Platform: Lenovo T450s Desktop Environment: Cinnamon Driver Version: 2.99.910-0ubuntu1.6 The GPU Hangs after a suspend/resume when the AC is not connected. But this behavior is not allays the case, but in most of the cases. [ 102.885927] [drm] stuck on render ring [ 102.886800] [drm] GPU HANG: ecode 0:0x5fd68105, in Xorg [1553], reason: Ring hung, action: reset [ 102.886802] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [ 102.886802] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 102.886803] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [ 102.886803] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [ 102.886804] [drm] GPU crash dump saved to /sys/class/drm/card0/error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1451165/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

