After kernel update the backlight on my Asus eeepc 1005px becomes off during boot up. I can see the login screen if I point light to the screen. The backlight is not reacting on brightness adjustment keys. The backlight starts working only if I close and open the laptop lid.
I have tried to:
* echo 10 > /sys/class/backlight/acpi_video0/brightness
* echo 125 > /sys/class/backlight/intel_backlight/brightness
* vbetool dpms on
* pass "acpi_backlight=vendor" kernel parameter
* install gdm instead of lightdm
* create /usr/share/X11/xorg.conf.d/80-backlight.conf with content recommended in Kernel/Debugging/Backlight Wiki article
with no luck.
The backlight works fine if I pass "acpi_osi=" kernel parameter, the brightness is adjusted by keys, but the applet does not react to adjustments.
After kernel update the backlight on my Asus eeepc 1005px becomes off during boot up. I can see the login screen if I point light to the screen. The backlight is not reacting on brightness adjustment keys. The backlight starts working only if I close and open the laptop lid.
I have tried to: backlight/ acpi_video0/ brightness backlight/ intel_backlight /brightness =vendor" kernel parameter X11/xorg. conf.d/ 80-backlight. conf with content recommended in Kernel/ Debugging/ Backlight Wiki article
* echo 10 > /sys/class/
* echo 125 > /sys/class/
* vbetool dpms on
* pass "acpi_backlight
* install gdm instead of lightdm
* create /usr/share/
with no luck.
The backlight works fine if I pass "acpi_osi=" kernel parameter, the brightness is adjusted by keys, but the applet does not react to adjustments.
ProblemType: Bug 4.4.0-145- generic 4.4.0-145.171 ature: Ubuntu 4.4.0-145. 171-generic 4.4.176
DistroRelease: Ubuntu 16.04
Package: linux-image-
ProcVersionSign
Uname: Linux 4.4.0-145-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: XFCE
Date: Thu Jul 18 22:30:44 2019
InstallationDate: Installed on 2019-02-17 (151 days ago)
InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)