Public bug reported:
Binary package hint: xserver-xorg-video-nouveau
When I enabled the Nouveau driver in Xorg, the screen would dim
significantly on every user switch. after 3 or 4 switches I could barely
read it. The text consoles (Alt-F1 trough F6) were dimmed as well.
How to reproduce (At least on my hardware):
1. Create two users (eg. "one" and "two").
2. Enable the nouveau driver in Xorg, reboot
3. Login as user one, then switch to user two (login). The screen gets already
noticeably darker.
4. Switch back and forth between users. Each time the screen gets darker until
you cannot read it anyore.
Once dark the same luminosity level can be seen from the text consoles.
I guess a workaround could be disabling the dim effect which I don't
know if it's easily doable and how... I always run will all effects
disabled but the dim effect is still there.
The bug was submitted using the proprietary driver as I frequently use
user-switching and the old nv driver crash for me (which will be another
bug report).
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-video-nouveau 1:0.0.15+git20100219+9b4118d-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Mon Apr 26 18:19:40 2010
DkmsStatus: nvidia-current, 195.36.15, 2.6.32-21-generic, x86_64: installed
MachineType: System manufacturer System Product Name
ProcCmdLine: root=UUID=e37a626a-687a-461f-9c52-2142fe590564
elevator=anticipatory ro quiet splash
ProcEnviron:
LANGUAGE=en_CA:en
PATH=(custom, user)
LANG=en_CA.utf8
SHELL=/bin/bash
SourcePackage: xserver-xorg-video-nouveau
dmi.bios.date: 05/24/2006
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0302
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M2V
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr0302:bd05/24/2006:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2V:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
system:
distro: Ubuntu
codename: lucid
architecture: x86_64
kernel: 2.6.32-21-generic
** Affects: xserver-xorg-video-nouveau (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug lucid nv40
--
Nouveau driver dim screen on every user switch until it's totally dark
https://bugs.launchpad.net/bugs/570454
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