System does not resume after screen goes off when idle

[Walter Garcia-Fontes]

When the screen goes off because the system is idle, it does not resume back, it just stays black. Only way of getting the system back is restarting lightdm and logging in again.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-15-generic 3.5.0-15.23
ProcVersionSignature: Ubuntu 3.5.0-15.23-generic 3.5.4
Uname: Linux 3.5.0-15-generic x86_64
ApportVersion: 2.5.2-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: wgarcia 3069 F.... pulseaudio
Date: Wed Sep 26 08:04:58 2012
HibernationDevice: RESUME=UUID=a5058733-7bd1-4624-8bc9-773fa192ad1e
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MachineType: Dell Inc. Latitude E6410
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-15-generic root=UUID=93dc76b0-0fa8-49d2-9aa5-dee7515b4494 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-15-generic N/A
 linux-backports-modules-3.5.0-15-generic N/A
 linux-firmware 1.94
SourcePackage: linux
UpgradeStatus: Upgraded to quantal on 2012-09-07 (18 days ago)
WifiSyslog:

dmi.bios.date: 05/28/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: 0667CC
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd05/28/2010:svnDellInc.:pnLatitudeE6410:pvr0001:rvnDellInc.:rn0667CC:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6410
dmi.product.version: 0001
dmi.sys.vendor: Dell Inc.

[Walter Garcia-Fontes (walter-garcia)]

Attaching Xorg log files

[Walter Garcia-Fontes (walter-garcia)]

Could be a duplicate of bug 1055987 but I'm not sure

[Edward Donovan (edward.donovan)]

 Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 966744, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

[Edward Donovan (edward.donovan)]

Hi Walter -

I take it that switching to another VT, then coming back, doesn't get you a normal display. In that case it's bug 966744. If that was enough to restore it, then I would say it's bug 1055987. Thanks!