Thanks, I attached the logs you requested. With 1.11.9-0ubuntu1 the problem presists. I don't know when exactly it started but it happend relatively recently. It might be a issue with the setup of X done by lightdm, because when I launch my session via gdm I don't see this problem.
Whats interessting is that lsof shows me that fd0 is connected as 0w to /var/log/Xorg.0.log for both gdm/lightdm but the select() for lightdm includes fd 0 in the select loop but for gdm it does not include it. And lightdm has a slightly different set of options when it launches X - i.e. -mir which is not set by gdm. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1365855 Title: 100% cpu in Xorg when xorg is started via lightdm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1365855/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
