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.
SGIN 15.6" Laptop Notebook Intel Celeron Quad-Core 2.8 GHZ 8GB RAM 256GB SSD HD
$189.00
Team T-FORCE VULCAN Z 16GB (2 x 8GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) XMP
$38.99
A-Tech 8GB DDR3 1600 PC3-12800 Laptop SODIMM 204-Pin Memory RAM PC3L DDR3L 1x 8G
$13.99
Samsung 16GB (2x8GB) DDR4 2400MHz PC4-19200 Desktop RAM Memory M378A1K43CB2-CRC
$19.95
CORSAIR Vengeance RGB Pro 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3600 (PC4 28800)
$79.95
LOT OF 4 Desktop RAM 8GB DDR4 PC4 SAMSUNG only
$38.88
Crucial 16GB (2x 8GB) Kit DDR3L 1600MHz PC3-12800 UDIMM Desktop 240-Pin CL11 RAM
$21.33
HyperX FURY DDR3 8GB 16GB 32GB 1600 MHz PC3-12800 Desktop RAM Memory DIMM 240pin
$12.90
16GB 8GB 4GB DDR2 800MHz PC2-6400U 240Pin intel DIMM Desktop PC Memory SDRAM LOT
$79.99
Patriot Viper Steel DDR4 RAM 16GB (2X8GB) pvs416g440c9k
$69.99