Thanks Chris Cheney! The events hasn't come for a long time. http://git.kernel.org/?p=linux/kernel/git/stable/linux- stable.git;a=commit;h=e58f637bb96d5a0ae0919b9998b891d1ba7e47c9
"Polling for a VGA device on an old system can be quite expensive, causing latencies on the order of 600ms. As we hold the mode mutex for this time and also need the same mutex to move the cursor, we trigger a user-visible stall." Old system? "The real solution would involve improving the granulatity of the locking and so perhaps performing some of the probing not under the lock or some other updates can be done under different locks. Also reducing the cost of probing for a non-existent monitor would be worthwhile. However, exposing a parameter to disable polling is a simple workaround in the meantime." Why not default at least? "This is coupled to the user calling xrandr"(not automatically when polling is disapled) "since the information on the connection has just been updated."(from the newly connected screen) -- 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/957298 Title: Mouse is very slow after starting a session on Precise To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/957298/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
