http://bugzilla.kernel.org/show_bug.cgi?id=11976
------- Comment #22 from [EMAIL PROTECTED] 2008-12-03 17:14 -------
Thanks for so quick response.
From the test result it is confirmed that this issue is related with BIOS.
On the box there exists the SMbus controller. But the I/O address defined in
PCI and AML code is different. The SMBus I/O address obtained from the PCI
config space is 0x3000-0x301f. From the AML code the I/O address is
0x2000-0x201f.
When the Fan throtting is enabled in BIOS, the GPE0 will be triggered and in
the _L00 object the SMbus I/O port will be accessed. As the SMbus I/O port
defined in AML code is incorrect, it can't be accessed correctly. If the Fan
throtting is disabled, maybe the GPE0 won't be triggered and SMbus I/o port
won't be accessed.
Based on the above analysis and test result, it is confirmed that this issue
is related with the BIOS. And it had better be fixed by BIOS upgrading.
Thanks.
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