Interesting that this bug is still marked as unconfirmed. I can clearly see it myself on my laptop running Ubuntu 14.04. It's not that clear to me yet when it directly starts but it might have something to do with hibernation. When it occurs the CPU load of Xorg and compiz is raising up to 60% and stays at this level until the application gets closed. In my case it is mostly Thunderbird.
I have updated to Ubuntu 14.10 now, and will closely watch this problem over the next couple of days to maybe find a pattern to reproduce. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/297143 Title: Xorg eats processor cycles while waiting for slow Internet Status in The Mozilla Firefox Browser: Confirmed Status in Mozilla Thunderbird Mail and News: New Status in X.Org X server: Invalid Status in xorg package in Ubuntu: Invalid Bug description: Top shows that xorg is using >40% of CPU when there's no reason for it to be doing so. High CPU usage by xorg seems to be associated with slow/flaky Internet, e.g. slow sending of email with Thunderbird or slow loading of Launchpad in Firefox over a WiFi connection. It seems like xorg goes mental until it receives notification that the Internet transfer has completed successfully. At least Thunderbird and Firefox are involved, wget doesn't cause the same problem. I'm using an up-to-date Hardy (64-bit) on a Sony Vaio SZ650 (intel 965 graphics) and iwlagn / iwl4965 WiFi. To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/297143/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp