Public bug reported:
Hello,
I just upgraded to Karmic. After I closed my laptop screen (which causes
the backlight to come off) and opened it again, the screen would come up
with no backlight, which lets you see nearly nothing of the screen. The
same happened when resuming from suspend, and sometimes when the screen
was off automatically to save energy.
I switched kernel mode setting off (added "nomodeset" to the "kopt" line
in /boot/grub/menu.lst) and now it works ok.
Thanks,
Noam
ProblemType: Bug
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: noam 2838 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with AD1981B at irq 17'
Mixer name : 'Analog Devices AD1981B'
Components : 'AC97a:41445374'
Controls : 28
Simple ctrls : 20
Date: Wed Oct 14 09:55:22 2009
DistroRelease: Ubuntu 9.10
Lsusb:
Bus 004 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 003 Device 002: ID 0458:0007 KYE Systems Corp. (Mouse Systems)
Bus 003 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: IBM 2371H4G
Package: linux-image-2.6.31-12-generic 2.6.31-12.41
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcCmdLine: root=UUID=53b983b2-5879-4758-9aab-eda7a3ce49b0 ro
usbcore.autosuspend=1 nomodeset quiet splash
ProcEnviron:
LANGUAGE=en_US.UTF-8
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-12.41-generic
RelatedPackageVersions: linux-firmware 1.21
RfKill:
0: tpacpi_bluetooth_sw: Bluetooth
Soft blocked: yes
Hard blocked: no
SourcePackage: linux
Uname: Linux 2.6.31-12-generic i686
WpaSupplicantLog:
XsessionErrors:
(gnome-settings-daemon:2857): GLib-CRITICAL **: g_propagate_error: assertion
`src != NULL' failed
(nautilus:2892): Eel-CRITICAL **: eel_preferences_get_boolean: assertion
`preferences_is_initialized ()' failed
(polkit-gnome-authentication-agent-1:2916): GLib-CRITICAL **:
g_once_init_leave: assertion `initialization_value != 0' failed
(evolution-alarm-notify:2929): libecal-WARNING **: e-cal.c:317: Unexpected
response
(gnome-panel:2890): Gdk-CRITICAL **: gdk_x11_colormap_foreign_new: assertion
`GDK_IS_VISUAL (visual)' failed
dmi.bios.date: 12/21/2006
dmi.bios.vendor: IBM
dmi.bios.version: 1UETD3WW (2.08 )
dmi.board.name: 2371H4G
dmi.board.vendor: IBM
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: IBM
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnIBM:bvr1UETD3WW(2.08):bd12/21/2006:svnIBM:pn2371H4G:pvrThinkPadX40:rvnIBM:rn2371H4G:rvrNotAvailable:cvnIBM:ct10:cvrNotAvailable:
dmi.product.name: 2371H4G
dmi.product.version: ThinkPad X40
dmi.sys.vendor: IBM
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386
--
Screen backlight doesn't come on when using kernel mode setting, intel
https://bugs.launchpad.net/bugs/451071
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