You have been subscribed to a public bug:
After upgrading to 13.10 (kernel 3.11.0-12-generic) the backlight does
not work and the display is scrambled (see attached image).
The display works if I booting into an old kernel from 13.04
(specifically, 3.8.0-29, which is latest kernel version under 13.04 in
which the backlight worked for me - 3.8.0-30 and 3.8.0-31 never worked
on my machine).
** Affects: dell-sputnik
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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Built-in display on XPS-13 L322x not working after upgrade to 13.10
https://bugs.launchpad.net/bugs/1241808
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