After latest update of 14.10 and latest kernel upgrade it finally works! :-)
Thanks!
(Linux ThinkPadE145 3.16.0-29-generic #39-Ubuntu SMP Mon Dec 15 22:27:29 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux)
** Changed in: fglrx-installer (Ubuntu)
Status: Confirmed => Fix Released
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Hi cosama,
I wanted to install a fresh new ubuntu and try your advices, but it appears
that all is supported out-of-the-box on the very last ubuntu 14.10 ! Backlight
works well :)
(I just had an issue with wifi, but while checking "additional drivers" fixed
it)
Anyway, thanks for your help !
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Hi tom,
Not sure, I followed the description above, from a fresh buntu-gnome
14.04 install and it still works perfectly.
Do have the radon_bl0 brightness control folder? Check by typing in a
terminal: ls /sys/class/backlight/radeon_bl0
If so what happens if you type into the terminal: sudo bash
Hi @cosama,
With your method, I havea flash of the brightness to the value I set, but it
quickly go back to the old value. I have Xorg drivers.
Do you have an idea of what I could do ?
Is there any plan to fix this issue ? It makes linux nearly unusable
with this computer.
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I just got a brand new Thinkpad E145 and had the same problem after a
new install of ubuntu-gnome 14.04 (BIOS 2.02).
After trying out all possible combinations of kernel parameters and
drivers I finally found a solution that worked for me.
I had to disable the fglrx drivers and use the X org xser
It appears this bug is fairly well known. Here's an article called "Fix
Brightness Control Not Working for Ubuntu 14.04 & Linux Mint 17" at
http://itsfoss.com/fix-brightness-ubuntu-1310/ . Unfortunately, the fix
listed is only for the Intel Video card.
For what its worth, the brightness control
** Attachment added: "Output from "ls -lR" for /sys/class and /sys/devices
(starting with /sys/class/backlight)."
https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1318314/+attachment/4180143/+files/backlight-ls.txt
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** Attachment added: "Output from "lspci"."
https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1318314/+attachment/4180142/+files/lspci.txt
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I have the same problem as well, but this is on a Thinkpad T510 (about 5
years old). This is with the Nvidia graphs card and the Nvidia 331.38
driver (the Noveau driver doesn't work -- it consistently core dumps
after suspend/resume).
** Attachment added: "Xorg.0.org (Xorg Server log file)"
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: fglrx-installer (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1318314
Tit
More info here: http://fujii.github.io/2014/03/02/thinkpad-edge-e145
-backlight-brightness-issue/
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https://bugs.launchpad.net/bugs/1318314
Title:
brightness adjustment does not work on
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