This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1768152
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: bionic
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1768152
Title:
Brightness controll doesn't work - Samsung R560
Status in linux package in Ubuntu:
Incomplete
Bug description:
Hi,
I just migrated from Gentoo Linux to KUbuntu 18.04 LTS. Now I noticed
that brightness control doesn't work in Ubuntu (FN Keys show KDE
Dialog Brightness changed but display stays at full Backlight). Even
writing to /sys/class/backlight/acpi_video0/brightness doesn't change
the brightness level. In Gentoo everything was working fine, display
backlight responded to KDE and/or to /sys/class/backlight/... . As I
now I had a bug Ticket at Kernel org with user Tux12Fun an it was
implemented long time ago into the Kernel Main Line. But I can't find
the Ticket on Kernel.org now :-(
So I try to provide all the information i can collect from the old
installation.
Hardware: Samsung R560 Laptop
Model: NP-R560-AS05DE
Gentoo Kernel: linux-4.4.67-gentoo
Gentoo Video Driver: original Nvidia 340.106 with Gentoo Kernel Patch
nvidia-drivers-381.09-v3.patch
Ubuntu Kernel: 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
Ubuntu Video Driver: NVidia 390.42
root@rechner4:/# lsb_release -rd
Description: Ubuntu 18.04 LTS
Release: 18.04
lspci -vvv attached.
Kernel Config of my old Gentoo attached.
I hope we can mange it to get backlight control working on Ubuntu as
it's nearly inpossible to work with full backlight at night :-(
Thank you for your work.
Best regards form Bavaria
Tux12Fun (Thomas)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1768152/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
