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Comment 13 for bug 1249513

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Daniel van Vugt (vanvugt) wrote : Re: System graphics slow majorily after logout/login

Hmm, the logs don't show anything going wrong.

It could still be compiz/unity7 falling back to software rendering incorrectly (which it has been known to do). This would not show up in the X or USC logs, but should be in .xsession-errors. However .xsession-errors is pretty empty compared to what it should look like.

Please run this command and attach the output here:
   pmap `pidof compiz` | grep _dri

Please also look in /var/crash/ for crash files. And if you find a relevant one, please turn it into a bug report by running:
   ubuntu-bug /var/crash/XXX.crash