http://bugzilla.kernel.org/show_bug.cgi?id=12174
rui.zh...@intel.com changed:
What |Removed |Added
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CC| |mjg59-ker...@srcf.ucam.org
------- Comment #21 from rui.zh...@intel.com 2009-02-25 18:15 -------
(In reply to comment #13)
>
> The /sys/class/backlight/NVID/* is created by the "video" driver (just in
> 2.6.26, not in .28)
>
hah, you must mean /proc/acpi/video/NVID/, right?
the NVID I/F changes the backlight in a legacy but working way.
the GFX0 I/F needs the IGD OpRegion support. But unfortunately it doesn't work
on this laptop.
I have a similar problem on a sony laptop.
i915_gem_interrupt doesn't increase when I poking the sysfs backlight
interface,
and no backlight change.
But the problem got fixed by upgrading the X to the latest git tree.
can you please give this a try?
Matthew, thomas,
does the IGD OpRegion support require a newer X?
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