blank screen on bootup with HP Touchsmart tm2t laptop
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
High
|
Unassigned | ||
Maverick |
Invalid
|
High
|
Unassigned |
Bug Description
When starting up with an Ubuntu Maverick Meerkat beta liveUSB, after grub, the screen goes blank and never returns.
I found that using the option "acpi=off" is the only way I've gotten the screen to show back up. I tried many other grub options, such as i915.modeset=1, i915.modeset=0, radeon.modeset=1, radeon.modeset=0, nomodeset, vga=771, etc.
This laptop has hybrid ATI/Intel graphics. In Lucid Lynx, by default it would boot to using the Intel card, but with both cards powered on. I'm currently using a custom kernel build in Lucid of 2.6.34, with the vga_switcheroo module.
Turning ACPI off was the only option I've found that works.
One thing I noticed is that once I'm booted with ACPI off, there is no vga_switcheroo module loaded. I assumed that by 2.6.35, that module would be available.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-
Regression: Yes
Reproducible: Yes
ProcVersionSign
Uname: Linux 2.6.35-19-generic x86_64
AcpiTables:
Error: command ['gksu', '-D', 'Apport', '--', '/usr/share/
dump_
File "/usr/share/
tables = os.listdir(path)
OSError: [Errno 2] No such file or directory: '/sys/firmware/
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
Cannot stat file /proc/2978/fd/43: Stale NFS file handle
/dev/snd/
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xc4500000 irq 23'
Mixer name : 'IDT 92HD81B1X5'
Components : 'HDA:111d7605,
Controls : 14
Simple ctrls : 9
Card1.Amixer.info:
Card hw:1 'Generic'/'HD-Audio Generic at 0xc4420000 irq 24'
Mixer name : 'ATI R6xx HDMI'
Components : 'HDA:1002aa01,
Controls : 4
Simple ctrls : 1
Card1.Amixer.
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [off]
Date: Wed Sep 8 22:04:25 2010
LiveMediaBuild: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100906)
MachineType: Hewlett-Packard HP TouchSmart tm2 Notebook PC
ProcCmdLine: initrd=
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
RelatedPackageV
SourcePackage: linux
dmi.bios.date: 06/03/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.05
dmi.board.
dmi.board.name: 1486
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 83.15
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.
dmi.modalias: dmi:bvnHewlett-
dmi.product.name: HP TouchSmart tm2 Notebook PC
dmi.product.
dmi.sys.vendor: Hewlett-Packard
tags: |
added: regression-release removed: regression-potential |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
importance: | Undecided → High |
Changed in linux (Ubuntu Maverick): | |
importance: | Undecided → High |
status: | New → Confirmed |
I just booted back into the Maverick liveUSB and looked at the kernel config in /boot/config- 2.6.35- 19-generic .
It indeed has CONFIG_ VGA_SWITCHEROO= y in the config, so I believe that the grub acpi=off setting is what is making this module unavailable.