As a followup, using the function keys for brightness (in my case: fn+Alt+F5 or F6) seems to be remembered. So, at least for me, there is a workaround.
ON the same computer, xbacklight was working well with Knoppix 7.4 and 7.6.
It is not working for Knoppix 7.7.1. The command:
returns:Code:xbacklight -get
Code:No outputs have backlight property
As a followup, using the function keys for brightness (in my case: fn+Alt+F5 or F6) seems to be remembered. So, at least for me, there is a workaround.
The "No outputs have backlight property" error is apparently because xbacklight does not choose the right directory in /sys/class/backlight. Running:
shows that directory is named intel_backlight.Code:ls /sys/class/backlight
We should then be able to specify the directory by setting the Backlight option of the device in xorg.conf, configuring the section "Device" as follows:
Code:/etc/X11/xorg.conf Section "Device" Identifier "Card0" Driver "intel" Option "Backlight" "intel_backlight" EndSection
Last edited by philo; 11-03-2016 at 08:20 PM.
Actually only these 2 lines need to be inserted:
Should also have mentioned the link for the solution to that issue:Code:Driver "intel" Option "Backlight" "intel_backlight"
https://wiki.archlinux.org/index.php...ght#xbacklight
Last edited by philo; 11-13-2016 at 03:09 PM.
SanDisk 32GB Ultra Dual Drive USB Type-C, USB 3.1 Flash Drive - SDDDC2-032G-G46
$10.99
SanDisk 16GB Ultra USB 3.0 Flash Drive - SDCZ48-016G-U46
$6.25
SanDisk 128GB Ultra Flair USB 3.0 Flash Drive - SDCZ73-128G-G46
$12.99
SanDisk 128GB Extreme PRO USB 3.2 Solid State Flash Drive - SDCZ880-128G-A46
$36.99
Sandisk 16GB 32GB 64GB 128GB Cruzer Blade Flash Drive Memory Stick USB Lot Pack
$4.99
New TESLA OEM Model S,3,X,Y USB Flash Drive for Dashcam & Sentry Mode 128GB
$18.99
Lenovo USB 16TB 3.0 USB Flash Drive Thumb Disk Silver Transfer Metal Memory
$24.99
Mechanical Style Flash Drive USB 3.0 High Speed 16TB Large Capacity Waterproof
$8.37
USB Flash Drive Memory Stick Pendrive Thumb Drive 4GB, 8GB, 32GB, 64GB 128GB LOT
$249.37
Lot USB Flash Drive Memory Stick Pendrive Thumb Drive 2GB,4GB, 8G, 32G, 64G 128G
$414.85