** Description changed: - [Workaround] + [Workaround 1 (quick)] As a workaround the maximum cpu frequency can be limited: as root: echo 1333000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq; echo 1333000 > /sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq to check the current maximum frequency: grep . /sys/devices/system/cpu/cpu*/cpufreq/scaling_max_freq + + [Workaround 2 (preferred)] + Clean the notebook. There is, in time, no way around this if the notebook is supposed to run with more than 1GHz on 100% load. There is massive dust caking between the fan and the cooling fins. + The main service hatch needs to be opened with a screwdriver. Then two screws for the fan need to be removed. The fan can then be moved away. The dust cake can then easily be removed. + Caution, e.g. with regard to static electricity and loss of warranty, needs to be applied. The risk is entirely your own. + Result of the cleaning operation: the temperature settles at a mere 70°C on 100% load (at the full 2.17 GHz) on a flat table at about 25°C room temperature. + Conclusion: It would still be nice if temperature control were more agressive. This would also conceivably be advantageous when the notebook is not on a hard, flat surface and cooling is therefore hampered. And temperature control measures at over 90°C would never get in the way of normal operation anyway, where temperature does not get that high. [Report] Under heavy use the Acer Extensa 5630Z always overheats and shuts down. I noticed this in lucid, but karmic shows the same principal problem. The main culprit seems to be that the clock frequency is reduced too little and too late. It should reduce clock frequency more/sooner to avoid the forced shutdowns. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: linux-image-2.6.32-20-generic 2.6.32-20.30 Regression: No Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.32-20.30-generic 2.6.32.11+drm33.2 Uname: Linux 2.6.32-20-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: wolfgang 1230 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf4800000 irq 21' Mixer name : 'Intel G45 DEVCTG' Components : 'HDA:10ec0268,1025013c,00100101 HDA:14f12c06,10250093,00100000 HDA:80862802,80860101,00100000' Controls : 21 Simple ctrls : 12 Date: Thu Apr 15 15:08:59 2010 HibernationDevice: RESUME=UUID=d4760b83-2892-4b31-bf01-cb6c7d267f1f InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100226) MachineType: Acer Extensa 5630 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-20-generic root=/dev/sda7 i915.powersave=0 mmc_removable=0 thermal.psv=80 quiet splash ProcEnviron: LANG=en_US.utf8 SHELL=/bin/bash RelatedPackageVersions: linux-firmware 1.33 RfKill: 0: acer-wireless: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux StagingDrivers: rt2860sta Title: [STAGING] dmi.bios.date: 12/05/2008 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: V1.25 dmi.board.name: Homa dmi.board.vendor: Acer dmi.board.version: Rev dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.25:bd12/05/2008:svnAcer:pnExtensa5630:pvr0100:rvnAcer:rnHoma:rvrRev:cvnAcer:ct10:cvrN/A: dmi.product.name: Extensa 5630 dmi.product.version: 0100 dmi.sys.vendor: Acer
-- Critical temperature reached (100 C), shutting down. throttling too little, too late. https://bugs.launchpad.net/bugs/563815 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
