Public bug reported:
Since upgrading to Oneiric, I've been affected by the following
regression (which didn't occur in Natty):
If I leave my box unattended and it goes into power-saving mode, when I
resume I won't be able to see what's on the screen very well since the
backlight will be disabled. If I explicitly put the machine into power-
saving mode by closing the lid or choosing the suspend option from the
menu, I can resume with no problem.
I initially thought that this bug was the same as the one experienced by
my friend (bug 779166). But there are a number of differences between
the two. Also, the workaround given in post 49 of that bug (setpci -s
00:02.0 F4.B=00) seems to only make matters worse for me. And since the
setpci man page is thoroughly incomprehensible, I don't know whether I
can modify the setpci command to fix my issues.
This is an HP Mini 110 (netbook), and I've only ever run the kernel
versions provided by default in Ubuntu.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-3.0.0-12-generic 3.0.0-12.20
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
ApportVersion: 1.23-0ubuntu3
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: scott 1880 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfe938000 irq 42'
Mixer name : 'IDT 92HD81B1X5'
Components : 'HDA:111d7605,103c308f,00100402'
Controls : 14
Simple ctrls : 9
Date: Tue Oct 25 09:10:46 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
MachineType: Hewlett-Packard HP Mini 110-1000
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic
root=UUID=65340dbf-705f-409d-8bfa-54f408fe23c9 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.0.0-12-generic N/A
linux-backports-modules-3.0.0-12-generic N/A
linux-firmware 1.60
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/18/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 308F0 Ver. F.07
dmi.board.name: 308F
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 02.0B
dmi.chassis.asset.tag: CNU932B9KK
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvr308F0Ver.F.07:bd06/18/2009:svnHewlett-Packard:pnHPMini110-1000:pvr03A8100000000000100300000:rvnHewlett-Packard:rn308F:rvrKBCVersion02.0B:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Mini 110-1000
dmi.product.version: 03A8100000000000100300000
dmi.sys.vendor: Hewlett-Packard
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: apport-bug i386 oneiric running-unity
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https://bugs.launchpad.net/bugs/881166
Title:
Backlight sometimes gets disabled
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