After many month of having this problem I finally found a solution that
is working for me:
I changed /etc/default/grub, having now these two lines:
GRUB_CMDLINE_LINUX_DEFAULT=quiet splash acpi_osi=Linux
GRUB_CMDLINE_LINUX=quiet splash acpi_osi=Linux
Backlight is working fine with the hotkeys and
My kernel is 3.8.0-23-generic
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https://bugs.launchpad.net/bugs/954661
Title:
backlight brightness not adjustable by default on Dell XPS 13
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I had fixed the problem in Ubuntu 12.08 but it came again in Ubuntu
13.04.
With this
http://elubuntu.blogspot.com/2011/01/info-impossibile-trovare-il-nodo-top.html
solution the problem goes away but with info in English.
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I have a similar problem but less important:
fullscreen doesn't work the first time but if I exit from fullscreen mode and
try again it works!
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https://bugs.launchpad.net/bugs/1168662
Same bug here with 3.8.0-19 Kernel. Is there a way to install the
sputnik kernel over raring?
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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13 with
Answer #11 works for me.
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https://bugs.launchpad.net/bugs/1159931
Title:
Evince not rendering Postscript files
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Hi! I installed the new version of the kernel and I still have the same
brightness problem as before.
I'm not an expert but I thought about this:
I noticed that the screensaver is functioning, hence the system has a way of
changing the brigthness. Maybe if it is possible to check how the
For me this command is not functioning : (
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https://bugs.launchpad.net/bugs/954661
Title:
backlight brightness not adjustable by default on Dell XPS 13
To manage notifications about
I have a brand new dell xps 13 (L321X). I downloaded the kernel from the
Sputnik project but it didn't solved the problem of the backlight.
I tried also the method here:
http://askubuntu.com/questions/142017/brightness-keys-f4-and-f5-not-working-on-dell-xps-15-6-laptop
(change /etc/default/grub)
