Results 1 to 4 of 4

Thread: xbacklight and Knoppix 7.7.1

  1. #1
    Senior Member
    Join Date
    Dec 2012
    Posts
    152

    xbacklight and Knoppix 7.7.1

    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:

    Code:
    xbacklight -get
    returns:

    Code:
    No outputs have backlight property

  2. #2
    Senior Member
    Join Date
    Dec 2012
    Posts
    152
    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.

  3. #3
    Senior Member
    Join Date
    Dec 2012
    Posts
    152
    The "No outputs have backlight property" error is apparently because xbacklight does not choose the right directory in /sys/class/backlight. Running:

    Code:
    ls /sys/class/backlight
    shows that directory is named intel_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.

  4. #4
    Senior Member
    Join Date
    Dec 2012
    Posts
    152
    Actually only these 2 lines need to be inserted:

    Code:
     
    Driver      "intel"
    Option      "Backlight"  "intel_backlight"
    Should also have mentioned the link for the solution to that issue:

    https://wiki.archlinux.org/index.php...ght#xbacklight
    Last edited by philo; 11-13-2016 at 03:09 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


Samsung Galaxy Tab A9 (X110) 64GB 4GB RAM International Version (New) picture

Samsung Galaxy Tab A9 (X110) 64GB 4GB RAM International Version (New)

$129.99



Samsung Galaxy Tab A 8

Samsung Galaxy Tab A 8" SM-T387V 32GB Verizon Tablet (No SIM Tray) Grade B

$31.99



Samsung Galaxy Tab A8 10.5

Samsung Galaxy Tab A8 10.5" 64GB Gray WiFi Tab SM-X200NZAZXAR 2022 Model Bundle

$130.00



Samsung XE310XBA Chromebook 4 11.6

Samsung XE310XBA Chromebook 4 11.6" w/Celeron 1.1GHz/4GB/16GB SSD - Used

$38.00



Samsung Chromebook 2 503C XE503C12-K01US (Octa 5420 1.9GHz - 4GB RAM - 16GB SSD) picture

Samsung Chromebook 2 503C XE503C12-K01US (Octa 5420 1.9GHz - 4GB RAM - 16GB SSD)

$17.92



Samsung Galaxy Tab A 8

Samsung Galaxy Tab A 8" SM-T387V 32GB Verizon WIFI + Cellular Grade A Condition

$54.99



Samsung Galaxy Tab A9+ 11.0

Samsung Galaxy Tab A9+ 11.0" 64GB Gray Wi-Fi Tablet Bundle SM-X210NZAYXAR 2023

$170.00



NEW Samsung Galaxy Tab A8 10.5-in 32GB Tablet - Gray SM-X200 picture

NEW Samsung Galaxy Tab A8 10.5-in 32GB Tablet - Gray SM-X200

$129.98



Samsung Galaxy Tab S6 T860 10.5

Samsung Galaxy Tab S6 T860 10.5" 128GB Space Gray (WiFi) - Good

$207.99



Samsung Galaxy Tab S9 FE SM-X518U 128GB, Wi-Fi+5G (Carrier Unlocked) 10.9

Samsung Galaxy Tab S9 FE SM-X518U 128GB, Wi-Fi+5G (Carrier Unlocked) 10.9"- Gray

$409.98