Has this just started occurring? Do you have /var/log/lightdm/lightdm.log? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1365855
Title: 100% cpu in Xorg when xorg is started via lightdm Status in “lightdm” package in Ubuntu: Incomplete Bug description: I see Xorg using 100% cpu when its running via lightdm. This is not the case if I start X via "startx" or when its run from lxdm or gdm. A strace from a VT shows constant activity (where gdm has only a select() waiting). Most notably this repeats: """ select(256, [0 1 3 5 13 24 25 26], NULL NULL {417 413000}) = 1 (in [0], left {417, 412998}) read(0, 0x7ffff2bef74a0, 1024) = -1 (Bad file descriptor) """ (transcripted from the affected machine). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1365855/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp