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Sunday, 31 January 2010

Current list of Linux switchable graphics DSDT calls

With more users providing DSDT.dsl information in this bug report:
https://bugs.launchpad.net/bugs/312756
We have now been able to compile this list of calls to turn on/off the switchable graphics card in Linux:
status = acpi_get_handle(root_handle, "\\_SB.PCI0.P0P1.VGA._OFF", &handle);
status = acpi_get_handle(root_handle, "\\_SB_.PCI0.OVGA.ATPX", &handle);
status = acpi_get_handle(root_handle, "\\_SB_.PCI0.OVGA.XTPX", &handle);
status = acpi_get_handle(root_handle, "\\_SB.PCI0.P0P2.PEGP._OFF", &handle);
status = acpi_get_handle(root_handle, "\\_SB.PCI0.MXR0.MXM0._OFF", &handle);

If you haven't tried the switchable graphics feature in Linux yet, have a look at your DSDT.dsl file. With a bit of luck, you may be able to identify one of the methods above.

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