** Package changed: ubuntu => linux (Ubuntu) -- 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: New 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
