Public bug reported:
With the latest updates to Artful, I can no longer change the screen
backlight and keyboard brightness. The screen and keyboard brightness
up/down keys don't do anything, and moving the brightness slider in
Power Management doesn't do anything. (I don't know of a second way to
change the keyboard brightness.) I can confirm it occurred as of
2017-08-08, but I likely just didn't notice it earlier.
It all works correctly with the Alpha 2, both in the live session and
installed. I tried a clean install to make sure I didn't mess anything
up, and with this second install I didn't install or configure anything
except the non-free wifi driver.
I've tried the Ubuntu desktop (GNOME) daily builds from 2017-10-08 and
today (2017-10-10), and everything is working normally in the live
sessions, so it does seem to be Ubuntu MATE-specific.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: ubuntu-mate-desktop 1.198
ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
Uname: Linux 4.11.0-10-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.6-0ubuntu4
Architecture: amd64
CurrentDesktop: MATE
Date: Thu Aug 10 21:47:27 2017
InstallationDate: Installed on 2017-08-11 (0 days ago)
InstallationMedia: Ubuntu-MATE 17.10 "Artful Aardvark" - Alpha amd64
(20170725.1)
SourcePackage: ubuntu-mate-meta
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubuntu-mate-meta (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug artful
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https://bugs.launchpad.net/bugs/1710050
Title:
Regression: Can't change screen backlight and keyboard brightness
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