https://bugzilla.kernel.org/show_bug.cgi?id=31302
URL: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/6
61593
Summary: Samsung R522 Intel Core 2 Duo 2.0 with ATI 4560
everheats running Maverick or Natty desktop 64
Product: ACPI
Version: 2.5
Kernel Version: 2.6.35 - 2.6.38
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Fan
AssignedTo: acpi_power-...@kernel-bugs.osdl.org
ReportedBy: marconifa...@ubuntu-it.org
Regression: No
Created an attachment (id=51082)
--> (https://bugzilla.kernel.org/attachment.cgi?id=51082)
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)
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