[Thinkpad T410] lvds panel always blank when booted with lid closed
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Seth Forshee |
Bug Description
When I boot this machine in a docking station with the lid closed, the lvds panel remains blank even when the output is activated. This is a result of the bios failing to initialize the LVDS register when the lid is closed.
Linux 3.5-rc1 includes patches to work around this by detecting that the LVDS register is uninitialized and use the default LVDS register value from the VBT table instead. However, an additional fix is also required to ignore the pipe select bit in this register. I'm currently working on getting this fix upstream.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.2.0-25-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu9
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 45'
Mixer name : 'Intel IbexPeak HDMI'
Components : 'HDA:14f15069,
Controls : 26
Simple ctrls : 8
Card1.Amixer.info:
Card hw:1 'Headset'/'Logitech Logitech USB Headset at usb-0000:
Mixer name : 'USB Mixer'
Components : 'USB046d:0a0b'
Controls : 6
Simple ctrls : 2
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'
Mixer name : 'ThinkPad EC 6IHT43WW-1.18'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Wed Jun 13 13:20:07 2012
EcryptfsInUse: Yes
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: LENOVO 2516CTO
ProcEnviron:
TERM=xterm
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.79
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: Upgraded to precise on 2012-03-02 (102 days ago)
dmi.bios.date: 04/12/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 6IET83WW (1.43 )
dmi.board.name: 2516CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 2516CTO
dmi.product.
dmi.sys.vendor: LENOVO
Related branches
tags: | added: patch |
This bug was fixed in the package linux - 3.5.0-3.3
---------------
linux (3.5.0-3.3) quantal-proposed; urgency=low
[ Andy Whitcroft ]
* [Config] enable CONFIG_MEMTEST=y
- LP: #1004535
* [Config] config-check: add support for a cut operation
* [Config] enforcer -- switch to cut where appropriate
[ Leann Ogasawara ]
* Rebase to v3.5-rc5
* [Config] Updateconfigs after rebase to v3.5-rc5
[ Luis Henriques ]
* SAUCE: ocfs2: Fix NULL pointer dereferrence in change_ file_space
__ocfs2_
- LP: #1006012
[ Seth Forshee ]
* SAUCE: (drop after 3.5) drm/i915: ignore pipe select bit when checking
for LVDS register initialization
- LP: #1012800
[ Upstream Kernel Changes ]
* rebase to v3.5-rc5
- LP: #1013183
- LP: #1017017
- LP: #884652
-- Leann Ogasawara <email address hidden> Mon, 02 Jul 2012 06:41:58 -0700