Can you also try on Ubuntu 12.04 LTS (final release on April 26) too ? ** Description changed:
I have a ThinkPad L520 (7859-5BG) Core i5-2520M(2.5GHz) with 4GB RAM and Ubuntu 11.10 32-bit install and with gnome classic (no effects) environment Condition: When my battery is charging via power adapter, system is severely slow. This is most often visible when just about every process takes very high CPU (e.g. gnome-panel consuming 60% or chrome consuming 118% of CPU). Working with the laptop is almost impossible due to very slow processing. Clicking "applications" in panel takes 1 second to appear. During the above state - as soon as I disconnect my power adapter, CPU usage drops to less than 10%, and system becomes super smooth and quick again. Also, when the battery gets completely charged, laptop (kindof) stops lagging much. Also, I took my battery out of my laptop, and powered it directly via AC adapter, and system was super smooth. - - My laptop is dual-boot (despite my hatred for Windows), and I have tested battery charging on Windows. THere is NO LAG AT ALL ! This confirms that there is no hardware fault, as windows is quick and fast during battery charging. + My laptop is dual-boot (despite my hatred for Windows), and I have + tested battery charging on Windows. THere is NO LAG AT ALL ! This + confirms that there is no hardware fault, as windows is quick and fast + during battery charging. The state of the system is confirmed - means I can recreate the problem almost every time. I have tried "top" to see processes and how they look, but no "strange" process is there for one to be able to kill. Its essentially the same processes that start hogging my CPU completely (chrome, nautilus, gnome-panel, just-any-running-process.... ) I have also tried another brand new charger from Lenovo - but same problem there. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: xorg 1:7.6+7ubuntu7.1 ProcVersionSignature: Ubuntu 3.0.0-16.29-generic-pae 3.0.20 Uname: Linux 3.0.0-16-generic-pae i686 .tmp.unity.support.test.0: - + ApportVersion: 1.23-0ubuntu4 Architecture: i386 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,imgpng,move,snap,grid,gnomecompat,resize,regex,animation,vpswitch,mousepoll,unitymtgrabhandles,place,wall,session,workarounds,expo,fade,ezoom,scale,unityshell] CompositorRunning: None Date: Fri Mar 23 02:09:39 2012 DistUpgraded: Fresh install DistroCodename: oneiric DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: - Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) - Subsystem: Lenovo Device [17aa:21dd] + Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) + Subsystem: Lenovo Device [17aa:21dd] InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) MachineType: LENOVO 78595BG ProcEnviron: - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-16-generic-pae root=UUID=dec2de3b-50bd-4850-b890-b645f6457392 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/04/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8GET38WW (1.15 ) dmi.board.name: 78595BG 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:bvr8GET38WW(1.15):bd11/04/2011:svnLENOVO:pn78595BG:pvrThinkPadL520:rvnLENOVO:rn78595BG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 78595BG dmi.product.version: ThinkPad L520 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6.1 version.libdrm2: libdrm2 2.4.26-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3 version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/962712 Title: Battery charging slows down my thinkpad severely To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/962712/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
