So I think I have an idea of what is happening.. Here's my sensors output:
acpitz-virtual-0 Adapter: Virtual device temp1: +56.0°C (crit = +98.0°C) thinkpad-isa-0000 Adapter: ISA adapter fan1: 1978 RPM coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +57.0°C (high = +86.0°C, crit = +100.0°C) Core 0: +50.0°C (high = +86.0°C, crit = +100.0°C) Core 1: +53.0°C (high = +86.0°C, crit = +100.0°C) pkg-temp-0-virtual-0 Adapter: Virtual device temp1: +57.0°C The "high" temperature is at 86C. I notice the performance drop at around 87C. (Still need to try to reproduce it again...) The CPU clock frequency is not modified at 87C. The characteristics of the performance drop is consistent with a lowered "Clock modulation", something I've seen in programs that controls the CPU on windows. Now this did not happen on a previous version of Linux. Previously when I hit about 95C (which apparently is quite common for these laptops after about 1-2 years of usage), the CPU frequency will be restricted to 800MHz, which would be the lowest frequency available. So I'm not exactly sure what the best fix for this would be, or where the "regression" happened. While 95C does not seem like a good idea, it is actually quite easy, at least for me, to hit 87C on these thinkpads, even after cleaning it out, replacing the thermal paste (multiple times with no difference in results), and so forth. I will try to get myself a fan mat and see if that helps things sometime soon and confirm that this is indeed the issue. -- 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/1236653 Title: Graphics performance reduced after playing games for a little bit Status in “linux” package in Ubuntu: Incomplete Bug description: I recently upgraded to Saucy. I noticed that everytime I play something like Counter Strike Source, my graphics performance drops down to something like 15fps while normally it is locked at a max FPS of 40fps.. This slowdown happens and also makes my computer generally pretty slow. Thermo maximum has not been tripped (I know, and I actually underclock while playing these games). I'm not sure why this is happening. It only happens on 13.10. I have bumblebee installed. I used both cards to play the game and the same thing happens ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-11-generic 3.11.0-11.17 ProcVersionSignature: Ubuntu 3.11.0-11.17-generic 3.11.3 Uname: Linux 3.11.0-11-generic x86_64 ApportVersion: 2.12.5-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: shuhao 2611 F.... pulseaudio shuhao 4063 F.... plugin-containe /dev/snd/pcmC0D0p: shuhao 4063 F...m plugin-containe /dev/snd/timer: shuhao 4063 f.... plugin-containe Date: Mon Oct 7 20:39:17 2013 HibernationDevice: RESUME=UUID=0c4e9477-6a74-48cb-a0e4-37bc3251580e InstallationDate: Installed on 2013-07-08 (91 days ago) InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1) MachineType: LENOVO 4180J4C MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-11-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash i915.modeset=1 i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Failed to create secure directory (/run/user/1000/pulse): Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.11.0-11-generic N/A linux-backports-modules-3.11.0-11-generic N/A linux-firmware 1.116 SourcePackage: linux UpgradeStatus: Upgraded to saucy on 2013-09-25 (12 days ago) dmi.bios.date: 05/17/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 83ET57WW (1.27 ) dmi.board.asset.tag: Not Available dmi.board.name: 4180J4C 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:bvr83ET57WW(1.27):bd05/17/2011:svnLENOVO:pn4180J4C:pvrThinkPadT420:rvnLENOVO:rn4180J4C:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4180J4C dmi.product.version: ThinkPad T420 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1236653/+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
