Could you please test the latest mainline kernel via
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-rc1-saucy/ and
advise on the results?
** Tags added: needs-upstream-testing raring regression-potential
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1225811
Title:
[Dell Inspiron 15R 5521] Can't toggle backlight brightness
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