[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete = Expired
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Taylor Raack, unfortunately, Me too! comments are simply unhelpful here on
Launchpad. If you would like to be helpful, and so your hardware and problem
may be tracked, could you please file a new report with Ubuntu by executing the
following in a terminal while booted into the default Ubuntu
I'm using 14.04.1, and I have the exact same problem. The solution
posted also works for me.
$ uname -a
Linux lune 3.13.0-39-generic #66-Ubuntu SMP Tue Oct 28 13:31:23 UTC 2014 i686
i686 i686 GNU/Linux
$ cat os-release
NAME=Ubuntu
VERSION=14.04.1 LTS, Trusty Tahr
ID=ubuntu
ID_LIKE=debian
Christopher, I suspect that it did not -- do you want me to try some
live CDs of previous releases? :)
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https://bugs.launchpad.net/bugs/1388636
Title:
[Lenovo V570
Asif Youssuff, for regression testing purposes, could you please test
(live environment is fine) 12.04.0 with kernel 3.2.x (not 12.04.5 or
another variant) via http://old-releases.ubuntu.com/releases/12.04.0/ ?
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** Description changed:
Fresh install of a Vivid Vervet Ubuntu GNOME daily iso.
Adding debugging information from
https://wiki.ubuntu.com/Kernel/Debugging/Backlight
I found that
echo 8 /sys/class/backlight/intel_backlight/brightness
worked to lower my screen brightness,
kernel-bug-exists-upstream-3.18-rc3 -- the aforementioned
/usr/share/X11/xorg.conf.d/80-backlight.conf
with the contents:
Section Device
Identifier Intel Graphics
Driver intel
Option AccelMethod sna
Option Backlight intel_backlight # use your backlight that works here
BusID
Asif Youssuff, did this problem not occur in a release prior to Vivid?
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https://bugs.launchpad.net/bugs/1388636
Title:
[Lenovo V570 Notebook] Brightness not changing via
The new BIOS did not resolve the issue, however creating
/usr/share/X11/xorg.conf.d/80-backlight.conf
with the contents:
Section Device
Identifier Intel Graphics
Driver intel
Option AccelMethod sna
Option Backlight intel_backlight # use your backlight that works here
BusID
Asif Youssuff, could you please test the latest upstream kernel available from
the very top line at the top of the page (the release names are irrelevant for
testing in your release) following https://wiki.ubuntu.com/KernelMainlineBuilds
? It will allow additional upstream developers to examine
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