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.
HPE BL460c G10 ProLiant Blade | 2x Silver 4110 | 16GB | P204I | 2x300GB 10KRPM
$1419.00
HPE BL460c G9 ProLiant Blade | 2x Xeon E5-2620V3 | NO RAM | P244BR | 2xHDD Tray
$179.00
HPE BL460c G10 ProLiant Blade | 2x Silver 4114 | 128GB | P204I | 2x1.2TB 10KRPM
$1869.00
Dell PowerEdge M620 0F9HJC Blade Server 2*E5-2670 2.60GHz 192GB RAM 2*300GB SAS
$103.99
Dell PowerEdge M640 Blade Server 2x Xeon Gold 5122 3.6GHz, No RAM, READ _
$402.38
HP ProLiant BL460c G9 (Gen9) 2x E5-2670V3 12 Core 3.1GHz No Ram or No Drives
$59.98
Dell PowerEdge M630 Blade Server 1x Xeon E5-2630 v4 CPU / Motherboard P/N 0R10KG
$69.99
Dell PowerEdge VRTX Rack Chassis 25-Bay 14.4TB HDD 2x M640 Blade 512GB RAM 2-Bay
$2335.00
Dell PowerEdge FX2s CTO Blade 4 Slot 2U Chassis 2x 2000W
$399.00
Cisco UCS 5108 Blade Server Chassis Enclosure N20-C6508 4x PSU 8x Fans 2x Fabric
$139.99