Adam Niedling, thank you for providing the requested information. As per your https://launchpadlibrarian.net/161645392/CurrentDmesg.txt : [ 6.254915] [drm] Wrong MCH_SSKPD value: 0x16040307 [ 6.254918] [drm] This can cause pipe underruns and display issues. [ 6.254919] [drm] Please upgrade your BIOS to fix this
Given you are running currently running the latest BIOS available for your model, it would be helpful if you engaged Acer via your SNID to inquire about an updated BIOS being made available. However, let this not be a show stopper in in finding a WORKAROUND without having to disable the nvidia card. Given no call trace was found in your dmesg, could you please capture the xorg back trace following https://help.ubuntu.com/community/DebuggingSystemCrash ? ** Summary changed: - [13.10] Ubuntu freezes completely when switching user + [Acer Aspire 5755G] Ubuntu freezes completely when switching user ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1247189 Title: [Acer Aspire 5755G] Ubuntu freezes completely when switching user To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1247189/+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
