[Bug 585226] [NEW] thinkpad x60s backlight does not come on after suspend/resume

[Nathaniel Smith]

Public bug reported:

I'm on a thinkpad x60s, running a 32-bit Lucid 2.6.32-22-generic kernel.
This machine has Intel 945GM graphics.

Intermittently, after resume, the backlight doesn't turn on. Maybe 10%
of the time? Everything else is functional -- if I squint carefully I
can use the computer, it's just not really usable. Though it happens
only intermittently, once it's happened I can't figure out how to get
the backlight back again -- doing a second suspend/resume cycle, for
instance, doesn't help. Instead I'm forced to reboot -- very
frustrating.

I marked this as a regression, but sadly I must admit I can't *quite* be
sure. I had rock-solid suspend/resume in Karmic, but unfortunately I had
to swap out my machine at the same time I upgraded -- so while this is
*supposedly* the exact same hardware (and suspend/resume has
traditionally been very reliable on thinkpads with intel graphics), in
theory it might not be a regression.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-22-generic 2.6.32-22.33
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  njs        1425 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xee240000 irq 17'
   Mixer name	: 'Analog Devices AD1981'
   Components	: 'HDA:11d41981,17aa2025,00100200'
   Controls      : 20
   Simple ctrls  : 11
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7BHT40WW-1.13'
   Mixer name	: 'ThinkPad EC 7BHT40WW-1.13'
   Components	: ''
   Controls      : 2
   Simple ctrls  : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
   Playback channels: Mono
   Limits: Playback 0 - 14
   Mono: Playback 11 [79%] [on]
Date: Mon May 24 20:48:04 2010
Frequency: Once every few days.
HibernationDevice: RESUME=UUID=d9372c40-505c-46e5-9b76-329eabd7b79b
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Lsusb:
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 17023JU
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=eb19733d-95e4-4bc0-b78e-b240261bf3a4 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/usr/bin/zsh
RelatedPackageVersions: linux-firmware 1.34
RfKill:
 0: phy0: Wireless LAN
 	Soft blocked: no
 	Hard blocked: no
SourcePackage: linux
dmi.bios.date: 01/23/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7BETD4WW (2.15 )
dmi.board.name: 17023JU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7BETD4WW(2.15):bd01/23/2008:svnLENOVO:pn17023JU:pvrThinkPadX60s:rvnLENOVO:rn17023JU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 17023JU
dmi.product.version: ThinkPad X60s
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid needs-upstream-testing regression-release resume suspend

-- 
thinkpad x60s backlight does not  come on after suspend/resume
https://bugs.launchpad.net/bugs/585226
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to linux in ubuntu.