Hezekiah Carty wrote:
  > I can try this.  My main concern is that, at least without the
> thinkpad_acpi option, "acpi_backlight=vendor" causes other problems on
> my system such as strange pauses/hangs that last for several seconds
> then go away.  Similar to the problem Alex Matveev posted above on
> 2009-02-16.

I am not sure what options were in effect there. As far as I can tell the 
acpi_backlight option alone did not work with Thinkpads. While it would prevent 
the generic interface with "vendor" the thinkpad-acpi driver looks at the ACPI 
variables directly (the same that the ACPI video driver uses to tell there is 
generic support) and without the option to thinkpad-acpi brightness control 
still would not work. In the cases before, there was no pausing when the 
generic interface was active, so the thinkpad-acpi option alone was enough. Why 
there could be those effects described by Alex, I cannot really tell. There is 
a comment in the acpi-driver code that sounds a bit like querying the abilities 
might have an effect in the ACPI subsystem. But still, it sounds a bit strange.
> 
> Attached.  This is my first time responding to a bug by email, so I
> hope this works properly!
> 
Worked. Thanks.

Just saw your latest post. So this one works for you with intrepid. Do I 
understand correctly that Jaunty always worked correctly in your case?

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the brightness applet and function key do not work on my thinkpad x61s
https://bugs.launchpad.net/bugs/324061
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