Public bug reported:
After upgrading from karmic to lucid my laptop turns off its lcd panel
early during boot, after which I cannot figure out a way to turn it back
on. X starts (I can hear the gdm drums and log in blindly), I can
ctrl+alt+f1 out of X and alt+f7 back into X, but during all this I get
no output on the screen. Blacklisting the viafb module gives me a
garbled framebuffer. Blacklisting vga16fb too makes everything work.
Fixing this is a little annoying because just disabling X still does not
give you a working shell (I used a rescue cd to edit
/etc/modprobe.d/blacklist.conf). So it might be nice to fix this before
lucid is released, even if it involves disabling viafb on more systems
than strictly necessary.
I'd be happy to test any patched kernel images that might avoid this
bug.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-20-generic 2.6.32-20.30
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-20.30-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-20-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: marienz 1482 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'V8235'/'VIA 8235 with ALC202 at 0x1400, irq 9'
Mixer name : 'Realtek ALC202 rev 0'
Components : 'AC97a:414c4740'
Controls : 44
Simple ctrls : 26
Card1.Amixer.info:
Card hw:1 'modem'/'VIA 82XX modem at 0x1800, irq 9'
Mixer name : 'Silicon Laboratory Si3036,8 rev 7'
Components : 'AC97m:53494c27'
Controls : 3
Simple ctrls : 3
Card1.Codecs.codec97.0.mc97.1.1:
1-1/0: Silicon Laboratory Si3036,8 rev 7
Extended modem ID: codec=1 LIN1
Modem status : GPIO MREF ADC1 DAC1 PRE(ADC2) PRF(DAC2) PRG(HADC) PRH(HDAC)
Line1 rate : 8000Hz
Date: Tue Apr 13 20:36:59 2010
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=875b30cc-e217-4eba-bc10-75ba897325af
MachineType: Acer,Inc. Aspire 1350
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-20-generic
root=/dev/mapper/main-karmic--root ro i8042.dritek=1 quiet splash
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.33
SourcePackage: linux
dmi.bios.date: 07/29/2004
dmi.bios.vendor: Acer
dmi.bios.version: 3A29
dmi.board.name: Aspire 1350
dmi.board.vendor: Acer,Inc.
dmi.board.version: Rev.A
dmi.chassis.asset.tag: ��������������������������������
dmi.chassis.type: 10
dmi.chassis.vendor: Acer,Inc.
dmi.chassis.version: 3A14
dmi.modalias:
dmi:bvnAcer:bvr3A29:bd07/29/2004:svnAcer,Inc.:pnAspire1350:pvr3A14:rvnAcer,Inc.:rnAspire1350:rvrRev.A:cvnAcer,Inc.:ct10:cvr3A14:
dmi.product.name: Aspire 1350
dmi.product.version: 3A14
dmi.sys.vendor: Acer,Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug graphics i386 lucid needs-upstream-testing
regression-potential
--
viafb and vga16fb turn off lcd on an acer aspire 1350
https://bugs.launchpad.net/bugs/562494
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