[regression] [Dell Latitude E6520] [NVS 4200M] Screen won't turn off, and isn't redrawn on resume

[Rebecca Palmer]

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Possibly relevant: this system has an outdated BIOS because the updater requires Windows (see bug 1244312).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)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.