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apport-collect 1775065
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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1775065
Title:
No brightness controls and /sys/class/backlight empty after upgrade to
Bionic on laptop with GeForce GTX 1060 Mobile (kernel parameter
acpi_osi= is a workaround)
Status in linux package in Ubuntu:
Confirmed
Bug description:
This is a case of "Backlight control does not work, and there are no
entries in /sys/class/backlight" for what lspci reports as "NVIDIA
Corporation GP106M [GeForce GTX 1060 Mobile] (rev a1)" where the
kernel parameter acpi_osi= is a workaround. (The workaround is also
recorded on Ask Ubuntu at https://askubuntu.com/questions/1030526
/brightness-on-laptop-msi-gt72vr-in-ubuntu-18-04-with-nvidia-gtx-1060
-mobile-does/1043598#1043598.)
The problem is new for me after upgrade to Bionic, although the cause
might be the corresponding update to the NVIDIA drivers.
I will add attachments following the instructions at
https://wiki.ubuntu.com/Kernel/Debugging/Backlight, though most of
them seem to be uninteresting. If I can provide further information,
please let me know.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-22-generic 4.15.0-22.24
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
Uname: Linux 4.15.0-22-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Jun 4 14:20:34 2018
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed
UpgradeStatus: Upgraded to bionic on 2018-06-04 (0 days ago)
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