On 11/06/15 20:14, Michael Butler wrote:
> On 11/06/15 20:04, Allan Jude wrote:
>> On 2015-11-06 20:02, Michael Butler wrote:
>>> Is anyone else seeing VM errors from X on -current with an old Intel
>>> display adapter?
>>>
>>> agp0: <Intel 82945GM (945GM GMCH) SVGA controller> on vgapci0
>>> agp0: aperture size is 256M, detected 7932k stolen memory
>>>
>>>  [ .. snip .. ]
>>>
>>> kernel: vm_fault: pager read error, pid 1103 (Xorg) <----- ??
>>> kdm[993]: X server for display :0 terminated unexpectedly
>>> kernel: pid 1103 (Xorg), uid 0: exited on signal 6 (core dumped)
>>> devd: notify_clients: send() failed; dropping unresponsive client
>>>
>>>     imb
>>>
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>>
>> That pager error may suggest a failing disk where it was unable to read
>> back some swapped out data. Check /var/log/messages for disk errors
> 
> No swap in use - this is a video-RAM paging issue,

As it turns out, this is a problem with the SNA acceleration method on
this device (likely a bug in the i915 video driver). Flipping to UXA
works perfectly with KDE and compositing,

        imb


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