http://bugzilla.kernel.org/show_bug.cgi?id=9614
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------- Comment #36 from [EMAIL PROTECTED] 2008-07-06 20:34 -------
Hah, I have a T61 here which can reproduce the problem.
I've tested the patches and it works well.
But I still have one question,
some IGD bios supports both IGD and legacy mode to change backlight,
which can be switched by acpi_osi="!Windows 2006".
But this patch removes the sys backlight interface for all ACPI video device
once "DRDY" is found.
So, IMO, IGD support should not be involved in the second patch.
The first patch only causes regressions on T61 laptops (works for others like
Toshiba) and a dmicheck can workaround the problem for now, even before the IGD
Opregion patches are upstream, right?
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