Ehsan, thank you for taking the time to report this bug and trying to help make Ubuntu better. However, as per https://wiki.ubuntu.com/Kernel/MainlineBuilds#Does_the_kernel_team_support_the_mainline_kernel_builds.3F the mainline kernel you are using is not a software package provided by the official Ubuntu repositories. Because of this the Ubuntu project can not support or fix your particular bug. Please report this bug to the provider of the software package.
If you are interested in learning more about software repositories and Ubuntu, check https://help.ubuntu.com/community/Repositories If this is reproducible with the default Ubuntu kernel, please file a new report (not reopen this one) via a terminal: ubuntu-bug xorg Please ensure you have xdiagnose installed, and that you click the Yes button for attaching additional debugging information. ** Tags added: latest-bios-2.18 ** Changed in: xorg (Ubuntu) Status: New => Invalid -- 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/1467039 Title: My lenovo t540p with Ubuntu 14.04 freezes very often To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1467039/+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