I am also facing the same problem on Lenovo Z50 70, although not as frequent as OP. I have attached my log (grep 'Atomic' in the log). The command `sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date` gives this output. 9BCN91WW 07/21/2015 which is latest, and can be checked from here: http://support.lenovo.com/in/hi/products/laptops-and-netbooks/lenovo-z-series-laptops/lenovo-z50-70/downloads/ds100528. I don't know if it is related but google-chrome crashed while playing video in full screen when I pressed [Esc] to return to normal display. I had to kill compiz and google-chrome to get it back.(Using tty1)
** Attachment added: "Kernel Log.(`cat kern.log|grep 'Atomic'`)" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1525390/+attachment/4549224/+files/kern.log -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1525390 Title: [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe A To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1525390/+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
