[Bug 207473] Re: Screen brightness double level changes

Kostas Chatzikokolakis kostas at chatzi.org
Wed Nov 12 12:50:44 UTC 2008

On my xps 1330, the two workarounds behave as follows:

- putting "blacklist video" in /etc/modprobe.d/blacklist

The brightness keys work fine, the only issue is that the brightness
indicator does not appear when you press the buttons.

NOTE: this workaround was causing a serious problem, disabling keyboard
events after changing the brightness (bug #261721). However, this bug
was fixed by the 2.6.27-8 kernel (available in proposed), so with this
kernel the workaround can be used again.

- deleting /etc/acpi/video_brightness<up/down>.sh

This also works, including the brightness indicator. However, as
reported by Sandro Mani above, the brighness jumps to 100% and then
quickly back to the desired level, which is annoying and potentially
harmful for the screen.

So I personally prefer the first workaround for now (hoping for a fix

Screen brightness double level changes
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