Created attachment 117086 [details] lspci output, syslog output and errordum of the graphics card I have a Thinkpad Yoga 12 with a Intel GMA HD5500. Using kernel 4.0.7 I see sporadic hangs in Xorg where I can still move the mouse cursor and navigate to virtual terminals. Using kernel 4.1.1 the hang occurs more frequently and the system has to be restarted. This report is for the former, as the kernel for the latter is not officially approved by arch and as such I wait for the released version before filing another report. I also have to enable i915.preliminary_hw_support=1, otherwise I am not able to switch to virtual terminals without having serious flickering.
Broadwell hasn't required i915.preliminary_hw_support=1 module parameter since v3.14.
We seem to have neglected the bug a bit, apologies. There were improvements pushed in kernel and Mesa that will benefit to your system, so please re-test with latest kernel & Mesa and without i915.preliminary_hw_support=1 to see if this issue is still occurring.
(In reply to yann from comment #2) > We seem to have neglected the bug a bit, apologies. > > There were improvements pushed in kernel and Mesa that will benefit to your > system, so please re-test with latest kernel & Mesa and without > i915.preliminary_hw_support=1 to see if this issue is still occurring. Timeout. Assuming that it is fixed by now. If this is not the case, please re-test with latest kernel & Mesa (12-13) to see if this issue is still occurring since there were improvements pushed in kernel and Mesa that will benefit to your system, and fill a new bug.
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