I encountered the same problem (at least it's the same symptoms). This seems to
be a bug with the backlight (possibly
http://www.mail-archive.com/[email protected]/msg18396.html, n
ot sure how nouveau is related - I got hit by this on an Intel HD4000).
Luckily, I've found a quick workaround for this. Run this as root (sudo -s):
cat << EOF >> /etc/pm/sleep.d/60intel
#!/bin/sh
# Force backlight on after resume
case "$1" in
thaw|resume)
cd /sys/class/backlight/intel_backlight
cat max_brightness >brightness
;;
*)
exit $NA
;;
esac
EOF
chmod +x /etc/pm/sleep.d/60intel
That's it. This tells the system to set the backlight to full on resume. Even
if it is already set to full, this causes the video driver to re-enable the
backlight. Instead of max_brightness, one could also use actual_brightness to
reset to the old value.
Of course the cd line would need to be changed according to the backlight
driver (whatever's there in /sys/class/backlight), like I said, this version
works on an Intel HD4000, it needs modification on non-Intel obviously.
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-nouveau in Ubuntu.
https://bugs.launchpad.net/bugs/1130938
Title:
Black screen after resuming from suspend [Dell XPS 15z]
Status in “xserver-xorg-video-nouveau” package in Ubuntu:
Confirmed
Bug description:
The laptop suspends as normal
The laptop resumes as intended but the screen is black
If I plug into an external monitor and then unplug, the screen then
shows up as normal on my laptop
If I use the external monitor, then suspend, then resume, the external
monitor screen comes up black, I have to then unlug and it screen
shows up on the laptop
My system needs the following boot parameters to turn the screen on after
boot (https://wiki.ubuntu.com/HardwareSupport/Machines/Laptops/Dell/XPS/15z)
acpi_backlight=vendor dell_laptop.backlight=0
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-7.14-generic 3.8.0
Uname: Linux 3.8.0-7-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.8-0ubuntu4
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Wed Feb 20 21:57:02 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:0446]
NVIDIA Corporation GF108 [GeForce GT 540M] [10de:0df5] (rev a1) (prog-if 00
[VGA controller])
Subsystem: Dell Device [1028:0446]
InstallationDate: Installed on 2013-02-11 (9 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130210)
MachineType: Dell Inc. Dell System XPS 15Z
MarkForUpload: True
ProcEnviron:
LANGUAGE=en_GB:en
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-7-generic
root=UUID=93acc5a7-d531-4af3-a215-472a7bd065d6 ro acpi_backlight=vendor
dell_laptop.backlight=0 quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/27/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A04
dmi.board.name: 060G42
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnDellInc.:bvrA04:bd07/27/2011:svnDellInc.:pnDellSystemXPS15Z:pvr:rvnDellInc.:rn060G42:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS 15Z
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.9~daily13.02.19-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.42-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.2-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.2-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.6-0ubuntu3
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