The NMI error is a bug in that kernel's perf (iirc). I still haven't seen anything to suggest a reason for any slowdown. Must be as infuriating for you as it is for me.
Can you please watch top and sudo perf top whilst the system is idle and lightly loaded to learn the expected behaviour, then inspect the system during the slowdown to see what stands out? Just as important an observation would be that no extra CPU time is spent whilst slow.(Given the generation changing cpufreq can have dramatic impact upon the GPU.) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1189645 Title: General lag under desktop environments To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1189645/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
