[Bug 76276] Backlight control broken on Dell XPS13 w/ kernel 3.14-rc7

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76276

--- Comment #29 from Luca Viggiani <lviggiani at gmail.com> ---
@Jani: Sorry for bothering you again but I need help with the workaround
described at comment #27.
That script is correctly executed at boot and fixes the backlit control.
However the problem persist when wakin up from sleep. So I changed my service
config file like this:

[Install]
WantedBy=multi-user.target sleep.target

the script is actually executed while resuming from sleep but has no effect at
all. I tried loging some values to check that the script is actually executed
and see some environment variables and I discovered that both $DISPLAY and
$USER are empty at resume time (they are correct at boot time).

I understand that this is a little out of scope for a bug trace hystory but it
might help other to correctly set up a workaround until the bug fix is
released.
Thanks.

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