Comment 10 for bug 1103594

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Cédric Dufour (cdufour-keyword-ubuntu-086000) wrote :

ERRATA: 'i915.invert_brightness=1' is *not* the way to go. Brightness is actually handled correclty... but when booting the XPS 12 with 3.8rc5, brightness is by default set to its minimum value (iow. off). One just needs to increase it with Fn+F5 to have the panel "wake up".

Note that this issue is also solved in the Quantal kernel, which, if I read correctly, incorporates all the quirks - for the brightness, trackpad, etc. - that have been developed as part of the Dell/Ubuntu Sputnik project (for the XPS 13). It appears none of this quirks are mainstream as per 3.8rc5 :-(