Ubuntu
xserver-xorg-video-intel package

  1. Bug #1531224
  2. Comment #9

Comment 9 for bug 1531224

Revision history for this message
Sb (sb56637) wrote :

The workaround is to use Intel UXA acceleration instead of SNA:

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/etc/X11/xorg.conf.d/20-intel.conf
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Section "Device"
   Identifier "Intel Graphics"
   Driver "intel"
   Option "AccelMethod" "uxa"
EndSection

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Of course this is only a workaround, and only LightDM is affected by Intel SNA acceleration, so I agree that this bug should be confirmed and handled.