Public bug reported: In Trusty with the nvidia-331 (default) driver selected, the system won't suspend, and won't turn the screen off when powersave activates; the screen instead briefly blanks, flashes the Nvidia logo, then goes to the password entry box.
On unlocking the system after this has happened (but not after a screen lock too brief to reach the powersave timeout), the screen goes black, then reappears in pieces as applications redraw. (Workaround for this part: opening and closing the Dash (Windows key twice) redraws the whole screen.) This did not happen in Saucy (nvidia-319); it also doesn't happen with the Nouveau driver (though bug 1333417 does, so that's not a workaround). Possibly relevant: this system has an outdated BIOS because the updater requires Windows (see bug 1244312). ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: nvidia-331 331.38-0ubuntu7 ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2 Uname: Linux 3.13.0-29-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 CurrentDesktop: Unity Date: Mon Jun 23 21:57:54 2014 EcryptfsInUse: Yes InstallationDate: Installed on 2012-01-25 (880 days ago) InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) SourcePackage: nvidia-graphics-drivers-331 UpgradeStatus: Upgraded to trusty on 2014-04-29 (55 days ago) ** Affects: nvidia-graphics-drivers-331 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug trusty ** Attachment added: "syslog; bug is at Jun 23 20:09:20 and Jun 23 20:10:02" https://bugs.launchpad.net/bugs/1333431/+attachment/4137723/+files/syslog -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1333431 Title: [regression] [Dell Latitude E6520] [NVS 4200M] Screen won't turn off, and isn't redrawn on resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331/+bug/1333431/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs