Please reopen. Same issues for me on Ubuntu 12.04 64 bit. Frequent lockups during boot, cannot resume, locks up when brightness changed. T520 + NVidia 4200M 32 bit install of Ubuntu 12.04 is solid, 64 bit install of Ubuntu 12.04 is unusable
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/776999/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
