http://bugzilla.kernel.org/show_bug.cgi?id=9919
Summary: support to blacklist OSI for particular machines
Product: ACPI
Version: 2.5
KernelVersion: 2.6.24
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
Hardware Environment: Fujitsu T2010
The DSDT table has some magic Vista extra 'functionality' that after about
thirty seconds of uptime forces the CPU to sit at it's rock bottom frequency.
Annoying.
The fix is simple, pass 'acpi_osi="!Windows 2006"' to the kernel and the
problem disappears. This of course is horrible so I turned to
drivers/acpi/blacklist.c and added some useful (well I think so) functionality.
I have attached a patch that lets you put into blacklist.c the following:
=========
{
.callback = dmi_invalidate_osi,
.ident = "Fujitsu Lifebook T2010",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook T2010"),
},
.driver_data = "Windows 2006\0\0",
},
driver_data contains a NULL byte seperated list of OSI interfaces you want to
disable at runtime, the list is terminated with two NULL bytes. So another
example would be "Windows 2006\0Windows 2001\0\0"...but not for my laptop :)
I'll attach the patches to this bug report once I have created it, please
consider it for inclusion; or point me to the Right Way(tm) to do it :)
Cheers
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