vga_switcheroo makes system freeze
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Confirmed
|
High
|
|||
linux (Ubuntu) |
Incomplete
|
Medium
|
Unassigned |
Bug Description
I am working with a new HP PC (dv7) which supports Hybrid Graphics in terms of the intel graphics and radeon graphics (as can bee found in lspci).
Currently I am only working with the Intel integrated graphics, and both adapters are powered on.
My goal was to deactivate the intel graphics and activate the radeon graphics, as the machine is plugged in to the power supply most of the time. To achieve this I tried the following:
cat /sys/kernel/
--> shows both cards are powered on and IGD is in use (the intel card)
echo DIS > /sys/kernel/
--> gives an error message because X is still running
I kill the X session
echo DIS > /sys/kernel/
After this command the system freezes completely. No warning or error, no blinking cursor, nothing. I have to power off using the power button.
Any suggestions on how to fix this are welcome. Is this a bug in the kernel?
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-
ProcVersionSign
Uname: Linux 3.0.0-12-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xc7500000 irq 51'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:111d7605,
Controls : 18
Simple ctrls : 10
Date: Mon Oct 24 23:55:59 2011
HibernationDevice: RESUME=/dev/sda3
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: Hewlett-Packard HP Pavilion dv7 Notebook PC
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.60
SourcePackage: linux
StagingDrivers: rts_pstor mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/20/2011
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.1A
dmi.board.
dmi.board.name: 1659
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 10.31
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.
dmi.modalias: dmi:bvnHewlett-
dmi.product.name: HP Pavilion dv7 Notebook PC
dmi.product.
dmi.sys.vendor: Hewlett-Packard
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in linux: | |
importance: | Unknown → High |
status: | Unknown → Confirmed |
Would it be possible for you to test the latest upstream kernel? It will allow additional upstream developers to examine the issue. Refer to https:/ /wiki.ubuntu. com/KernelMainl ineBuilds . If possible, please test the latest release candidate kernel (Not a kernel in the daily directory). Once you've tested the upstream kernel, please remove the 'needs- upstream- testing' tag(Only that one tag, please leave the others). This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs- upstream- testing' text.
If this bug is fixed by the mainline kernel, please add the following tag 'kernel- fixed-upstream- KERNEL- VERSION' . For example, if kernel version 3.1-rc9 fixed and issue, the tag would be: 'kernel- fixed-upstream- v3.1-rc9' .
If the mainline kernel does not fix this bug, please add the tag: 'kernel- bug-exists- upstream' .
Thanks in advance.