I had an older Dell laptop with i915 video also and suddenly started
seeing a similar problem to this from Ubuntu 11.04 onwards. No problems
before that. Had the problem for ages. I looked around the forums and
found no solution then I updated the bios in my laptop and the problem
disappeared.
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Andrew Reid wrote:
>> If I dim the display using the KDE power gadget a lot, or allow it to dim
>> automatically due to low battery, it dim suddenly to a barely perceivable
>> level and I can not restore the display to full brightness without
>> rebooting except for a brief flicker when the displ
> I have Debian Squeeze installed on an ASUS EeePC 901, using the i915
> video drivers and linux-image-3.2.0-0.bpo.2-686-pae from squeeze-
> backports.
>
> If I dim the display using the KDE power gadget a lot, or allow it to dim
> automatically due to low battery, it dim suddenly to a barely perc
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