Steve, in general high cpu utilization issues are *not* actually bugs in xorg. The reason is simply that xorg is a server process, and responds to demands from client applications. A wayward client app can make as much demand from the xserver as it wishes, even if it causes the system to bog down; as long as xserver doesn't crash or lock up, it's doing its job. So when you see high X cpu, the thing to look at is not X but rather what client apps are running.
In particular, since you see a sudden improvement during shutdown, that strongly suggests there is some daemon or other process running in the background that causes the sluggishness, which turns off shortly before boot. Look at your process table (`ps aux`) and see what is running. Try killing processes one by one (`kill -9 <pid>`) until you locate what's causing the issue. You might also boot a livecd and verify that the high cpu does not occur there, and then compare its process listing with your installed listing to spot processes specific to your installation. ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: Confirmed => Incomplete -- blinking display, high CPU utilization by xorg https://bugs.launchpad.net/bugs/543808 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in ubuntu. _______________________________________________ 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