Bug#443111: laptop: can't set brightness from within X11
On Tue, Sep 18, 2007 at 09:44:56PM +0200, Brice Goglin wrote:
> You should probably use the xbacklight tool (xbacklight package) instead
> of the brightness control keys. The latter might change things in the
> back of the driver (through the BIOS), causing possible problems.
I think xbacklight is more like a work around but not a real solution.
The brightness settings with acpi buttons do work right now with the old
driver and I can't get the point why the newer driver refuses to use the
functionality. brightness control keys don't change things without
noticing the operating system. Every change to the brightness is noticed
> There are some problems with xbacklight though, for instance bug #438969.
>> This doesn't happen if I downgrade to 1.7.2-4.
> Have you ever tried with previous releases of xserver-xorg-video-intel,
> for instance 2.0.0 or 2.1.0?
No. These drivers did lock my system too often if switching between VT
and X11 or exiting Xfce back to xdm so I didn't used them much. The
newest driver does freeze less often. But next weekend I will have a bit
more time to play. :-) Just now I switched back to the old driver.
Brightness keys work like a charm, no freeze if switching from X11 to VT
or if exiting Xfce and reentering xdm... Good old times ;-)