Created attachment 51082 [details] kern.log Hi, I tried to install Maverick 10.10 from Live CD 64 bit on my Samsung R522. During installation the notebook overheats and emergency shuts down. I managed to install let the notebook cool down and choosed direct installation without the "try out" option. But the running system still overheated! Even in idle (cpu usage around 4-10%) the processors temp incresed after a period of time to emergency shut down at 90 degrees Celsius! I checked all, the processor is idle and running on low frequency, fans are running. The idle temp was in the upper 60 degrees! Same time on Windows Vista everything was going well, idle temp around upper 30 degrees. I tried out to install the fglrx graphics driver from repository and now the idle temp is in the 50th. While working around 70-80. But still much hotter than Windows while having a lower CPU usage than Windows. Why it is still so hot? It also seems that the fans are running at lower speed at given temperature than in Windows. Could this be the problem? Running in the 80th reduces my processors lifetime. The standard driver (without installing fglrx) lets the system overheat and could damage the notebook. Even at full speed it should not overheat! Jan 30 18:24:29 localhost kernel: [ 0.800187] ACPI: Fan [FAN0] (off) Jan 30 18:24:29 localhost kernel: [ 0.800225] ACPI: Fan [FAN1] (off)
Created attachment 51092 [details] AcpiTables.txt
All needed log files are on the linked Launchpad report.
are the fans turned on in Windows? can you hear the fan spin in windows? If yes, does the system still overheat if you turn on the fan manually in Linux? please attach the output of "grep . /sys/class/thermal/*/*" when the system is hot.
Bug closed as there is no response from the bug reporter. please feel free to reopen it if the problem still exists in the latest upstream kernel.
Hi, I have the same problem on a Samsung R522, kernel 3.0.0-15, Ubuntu 11.10 32-bit. There is also a Windows 7 partition on the same machine and the fans are turned on there and I can hear their spin. When it is idle on Windows, cpu temp is about 40 degrees Celsius. However, it is 50 degrees Celsius on Linux in the same situation. I can't turn on the fans manually because I can't pass pwmconfig step of these instructions and I don't know any other way: http://askubuntu.com/questions/22108/how-to-control-fan-speed It gives me this error: /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed I attached an output of "grep . /sys/class/thermal/*/*" when the temperature is 65 degrees Celsius approximately. I don't how I am supposed to name it but I named it as "temperature-output.txt" Thanks.
Created attachment 72220 [details] Output of "grep . /sys/class/thermal/*/*" at 65 degrees Celcius
try "echo 1 > /sys/class/thermal/cooling_device0/cur_state" and "echo 1 > /sys/class/thermal/cooling_device1/cur_state" can you hear the fan spinning then? does the temperature actually drop? please attach the acpidump of this laptop as well.
ping...
No, they are not spinning after those commands and there is no change on temperature.
Created attachment 89451 [details] acpidump
(In reply to comment #10) > Created an attachment (id=89451) [details] > acpidump Your ACPI table provides a fake FAN control device, it doesn't do anything real to turn on/off the FAN with the specified interface: PowerResource (FN01, 0x00, 0x0000) { Method (_STA, 0, Serialized) // _STA: Status { Return (VFN1) } Method (_ON, 0, Serialized) // _ON_: Power On { Store (One, VFN1) } Method (_OFF, 0, Serialized) // _OFF: Power Off { Store (Zero, VFN1) } } And VFN1 is just a variable in memory space used to track the power resource's status: Field (GNVS, AnyAcc, Lock, Preserve) { OSYS, 16, ... ... Offset (0xEB), DSEN, 8, ECON, 8, GPIC, 8, CTYP, 8, L01C, 8, VFN0, 8, VFN1, 8, VDRV, 8 } No wonder Linux can't turn on the FAN. A firmware bug I would say. Any BIOS update available from your vendor site?
BIOS bug.
Hi, I want to install Linux on my R522 but luckily I did an internet search first. In Windows the temperature management works. So there must be some workaround? As I still have Win7 installed I might be able to assist.
I have a similar situation with my Samsung 530U3C, how does Windows manage to spin up the fans?
I didn't take a deeper look, but samsung-tools may worth a try: https://launchpad.net/samsung-tools https://github.com/voria/samsung-tools I didn't see your acpidump, but chances are that yours are the same as berhan's, i.e. the ACPI control method is empty or fake. So you will need to try other ways.