Public bug reported:
1.When the ubuntu is started in normal mode after some times the
display goes off but all the other things like the login screen are opened but
if any external display is attached then the display is working properly.
2.The brightness adjusting also not working . I tried all those things
to solve those problems in the internet but those are not working
3.Currently i'm using the version12.04 but these problems occurred
after the release of 11.04
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-29-generic-pae 3.2.0-29.46
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic-pae 3.2.24
Uname: Linux 3.2.0-29-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC888 Analog [ALC888 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: karthikeyan 2015 F.... pulseaudio
CRDA:
country IN:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 40), (N/A, 20)
(5250 - 5330 @ 40), (N/A, 20), DFS
(5735 - 5835 @ 40), (N/A, 20)
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xd8800000 irq 47'
Mixer name : 'Intel Cantiga HDMI'
Components : 'HDA:10ec0888,10250260,00100202
HDA:11c11040,10250260,00100200 HDA:80862802,80860101,00100000'
Controls : 40
Simple ctrls : 19
Date: Sat Aug 18 01:18:23 2012
HibernationDevice: RESUME=UUID=7aa7a1a0-7172-4dd7-b265-1320c98fd512
InstallationMedia: This
MachineType: Acer Aspire 4736
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic-pae
root=UUID=dc34ff47-faa3-46c8-bf8d-4ae965c71755 ro quiet splash
acpi_backlight=vendor /boot/grub/menu.lst . Execute: vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.2.0-29-generic-pae N/A
linux-backports-modules-3.2.0-29-generic-pae N/A
linux-firmware 1.79
SourcePackage: linux
StagingDrivers: zram
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/18/2010
dmi.bios.vendor: Acer
dmi.bios.version: V2.08
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Aspire 4736
dmi.board.vendor: Acer
dmi.board.version: V2.08
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V2.08
dmi.modalias:
dmi:bvnAcer:bvrV2.08:bd01/18/2010:svnAcer:pnAspire4736:pvrV2.08:rvnAcer:rnAspire4736:rvrV2.08:cvnAcer:ct10:cvrV2.08:
dmi.product.name: Aspire 4736
dmi.product.version: V2.08
dmi.sys.vendor: Acer
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: apport-bug i386 precise staging
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https://bugs.launchpad.net/bugs/1038239
Title:
my laptop display goes off while booting
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