I have the same problem on this laptop Gigabyte q1585n from Ubuntu 12.04 onwards. I have tried to figure out and solve this many time and sometime just hope that it would be solved by the team along with other overheating issues.
What I have found it this motherboard does not have any sensor that the OS can communicate to to find out the RPM of the fan and can neither control it's speed. But at some occasional generally during high processing needs, like while using blender the CPU fan stops and the machine overheats and becomes very slow. Before I can shut it down myself it trigger hardware overheating protection and shuts off. If I immediately turn on I can then hear the fan running at full speed (which was not running before) and easily cooling the cpu. Then I can boot in to Ubuntu and continue with the same work have the same CPU load. When the Fan would be stopping is pretty unpredictable but makes my system very unreliable and unsafe for some occasions like financial transaction. attaching a few files which may be helpful grep -r . /proc/acpi > acpi /proc/acpi/battery/BAT0/alarm:alarm: unsupported /proc/acpi/battery/BAT0/state:present: yes /proc/acpi/battery/BAT0/state:capacity state: ok /proc/acpi/battery/BAT0/state:charging state: charged /proc/acpi/battery/BAT0/state:present rate: 0 mA /proc/acpi/battery/BAT0/state:remaining capacity: 3008 mAh /proc/acpi/battery/BAT0/state:present voltage: 12535 mV /proc/acpi/battery/BAT0/info:present: yes /proc/acpi/battery/BAT0/info:design capacity: 5200 mAh /proc/acpi/battery/BAT0/info:last full capacity: 3008 mAh /proc/acpi/battery/BAT0/info:battery technology: rechargeable /proc/acpi/battery/BAT0/info:design voltage: 11100 mV /proc/acpi/battery/BAT0/info:design capacity warning: 480 mAh /proc/acpi/battery/BAT0/info:design capacity low: 48 mAh /proc/acpi/battery/BAT0/info:cycle count: 0 /proc/acpi/battery/BAT0/info:capacity granularity 1: 10 mAh /proc/acpi/battery/BAT0/info:capacity granularity 2: 25 mAh /proc/acpi/battery/BAT0/info:model number: MWL32b /proc/acpi/battery/BAT0/info:serial number: /proc/acpi/battery/BAT0/info:battery type: LION /proc/acpi/battery/BAT0/info:OEM info: SIMPLO /proc/acpi/button/lid/LID0/state:state: open /proc/acpi/ac_adapter/ACAD/state:state: on-line /proc/acpi/wakeup:Device S-state Status Sysfs node /proc/acpi/wakeup:P0P2 S4 *disabled /proc/acpi/wakeup:PEGP S4 *disabled /proc/acpi/wakeup:P0P3 S4 *disabled pci:0000:00:01.0 /proc/acpi/wakeup:PEGP S4 *disabled /proc/acpi/wakeup:P0P1 S4 *disabled pci:0000:00:1e.0 /proc/acpi/wakeup:PS2K S3 *enabled pnp:00:07 /proc/acpi/wakeup:AVC0 S3 *disabled pnp:00:08 /proc/acpi/wakeup:EHC1 S3 *enabled pci:0000:00:1d.0 /proc/acpi/wakeup:EHC2 S3 *enabled pci:0000:00:1a.0 /proc/acpi/wakeup:HDEF S0 *disabled pci:0000:00:1b.0 /proc/acpi/wakeup:RP01 S4 *disabled pci:0000:00:1c.0 /proc/acpi/wakeup:PXSX S5 *disabled pci:0000:02:00.0 /proc/acpi/wakeup:RP02 S4 *disabled pci:0000:00:1c.1 /proc/acpi/wakeup:PXSX S5 *disabled pci:0000:03:00.0 /proc/acpi/wakeup:RP03 S4 *disabled /proc/acpi/wakeup:PXSX S5 *disabled /proc/acpi/wakeup:RP04 S4 *disabled /proc/acpi/wakeup:PXSX S5 *disabled /proc/acpi/wakeup:RP05 S4 *disabled pci:0000:00:1c.4 /proc/acpi/wakeup:PXSX S5 *disabled /proc/acpi/wakeup:PEG3 S4 *disabled /proc/acpi/wakeup:PEG5 S4 *disabled /proc/acpi/wakeup:PEG6 S4 *disabled sudo fwts > fwts Test 24 of 96: Check _FIF (Fan Information). SKIPPED: Test 24, Skipping test for non-existant object _FIF. Test 25 of 96: Check _FSL (Fan Set Level). SKIPPED: Test 25, Skipping test for non-existant object _FSL. Test 26 of 96: Check _FST (Fan Status). SKIPPED: Test 26, Skipping test for non-existant object _FST. Simple Fan Tests. ---------------------------------------------------------------------------------------------------- Test 1 of 2: Check fan status. Test how many fans there are in the system. Check for the current status of the fan(s). PASSED: Test 1, Fan cooling_device0 of type Processor has max cooling state 10 and current cooling state 0. PASSED: Test 1, Fan cooling_device1 of type Processor has max cooling state 10 and current cooling state 0. PASSED: Test 1, Fan cooling_device2 of type Processor has max cooling state 10 and current cooling state 0. PASSED: Test 1, Fan cooling_device3 of type Processor has max cooling state 10 and current cooling state 0. Test 2 of 2: Load system, check CPU fan status. Test how many fans there are in the system. Check for the current status of the fan(s). Loading CPUs for 20 seconds to try and get fan speeds to change. Fan cooling_device0 current state did not change from value 0 while CPUs were busy. Fan cooling_device1 current state did not change from value 0 while CPUs were busy. Fan cooling_device2 current state did not change from value 0 while CPUs were busy. Fan cooling_device3 current state did not change from value 0 while CPUs were busy. ADVICE: Did not detect any change in the CPU related thermal cooling device states. It could be that the devices are returning static information back to the driver and/or the fan speed is automatically being controlled by firmware using System Management Mode in which case the kernel interfaces being examined may not work anyway. Test |Pass |Fail |Abort|Warn |Skip |Info | ---------------+-----+-----+-----+-----+-----+-----+ acpiinfo | 1| | | | | | acpitables | 6| 1| | | | | apicedge | 1| | | | | | apicinstance | 1| | | | | | aspm | 1| 2| | 3| | | bios32 | | | | | | | bios_info | | | | | | 1| checksum | 15| | | | | | crs | 1| | | | | | csm | | | | | | 1| cstates | 7| | | | | | dmesg_common | 1| | | | | | dmi_decode | 48| 1| | | | | ebda | 1| | | | | | fadt | | 3| | | | | fan | 4| | | | | | hda_audio | 5| | | | | | hpet_check | 4| | | | | | klog | | 5| | | | | maxfreq | 1| | | | | | maxreadreq | | 1| | | | | mcfg | 2| | | | | | method | 428| 6| | 5| 70| | microcode | | | 1| | | | mpcheck | | | | | 9| | msr | 94| 3| | | | | mtrr | 1| 1| | | 1| | nx | 3| | | | | | oops | 1| | | | | | os2gap | 1| | | | | | osilinux | | | | 1| | | pciirq | 3| 17| | | | | pnp | 2| | | | | | smbios | 1| | | | | | syntaxcheck | 1| 17| | | | | version | 3| | | | | | virt | 1| | | | | | wakealarm | 4| | | | | | wmi | | 19| | | | 1| ---------------+-----+-----+-----+-----+-----+-----+ Total: | 642| 76| 1| 9| 80| 3| ---------------+-----+-----+-----+-----+-----+-----+ sudo dmidecode > dmidecode.log ** Attachment added: "dmidecode.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1160205/+attachment/3608460/+files/dmidecode.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1160205 Title: acpi for gigabyte laptop on ubuntu 12.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1160205/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
