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Message #80901
[Bug 776999] Re: [Lenovo W520] laptop freezes on ACPI-related actions
Please reopen. This happens to me for Ubuntu 14.04 on a Lenovo T530 with
nvidia drivers. It only happens when I switch to Discrete Graphics in
the BIOS, but running in Optimus breaks other things (cannot change the
virtual layout of external screens without glitches).
Using all the proposed kernel parameters in this thread so far as well
as adding the EnableBrightnessControl line only prevents freezing the
system, but the brightness does not change. I also tried xbacklight and
changing the value in /sys/class/brightness/.../brightness.
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https://bugs.launchpad.net/bugs/776999
Title:
[Lenovo W520] laptop freezes on ACPI-related actions
Status in “linux” package in Ubuntu:
Won't Fix
Bug description:
Binary package hint: gnome-power-manager
I got the latest Ubuntu installed on a Lenovo W520 with graphics set
to Nvidia discrete card. The laptop freezes, however, on power-
management actions, such as brightness change and sleep/wake-up. A
particularly annoying problem is that the machine freezes
automatically after a GUI login if I had started gnome-power-manager
previously. I have to remove the gnome-power-manager settings
directory in order to get back in.
If I boot with acpi=off parameter to the kernel things work fine, but
then again no ACPI functionality is available.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-power-manager 2.32.0-2ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Wed May 4 13:09:50 2011
EcryptfsInUse: Yes
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GnomeSessionSuspendInhibited: No
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
MachineType: LENOVO 427638U
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=df7a5cd8-18b4-4b7a-92c8-6cc8f3647cc9 ro quiet splash vt.handoff=7
SourcePackage: gnome-power-manager
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/02/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8BET30WW (1.06 )
dmi.board.asset.tag: Not Available
dmi.board.name: 427638U
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8BET30WW(1.06):bd03/02/2011:svnLENOVO:pn427638U:pvrThinkPadW520:rvnLENOVO:rn427638U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 427638U
dmi.product.version: ThinkPad W520
dmi.sys.vendor: LENOVO
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