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Thread: Brightness key doesn work on my HP Probook450

  1. #1

    Default Brightness key doesn work on my HP Probook450

    Hi, brightness keys doesnt work on my laptoop with Intel graphic UHD6200. Sound control keys works correctly. I have found many solutions on the Internet, but nothing works for me, or I dont understand It enough.
    Can you help me please?
    Thanks

    OpenSuse 42.3 leap, KDE Plasma, EFI secure boot

  2. #2
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    Default Re: Brightness key doesn work on my HP Probook450

    Quote Originally Posted by makradenk View Post
    Hi, brightness keys doesnt work on my laptoop with Intel graphic UHD6200. Sound control keys works correctly. I have found many solutions on the Internet, but nothing works for me, or I dont understand It enough.
    Can you help me please?
    Thanks

    OpenSuse 42.3 leap, KDE Plasma, EFI secure boot
    It can be a difficult thing to resolve, depending on the hardware concerned. What does the following report?
    Code:
    /usr/sbin/hwinfo --gfxcard
    Code:
    ls -l /sys/class/backlight
    For the case of 'intel_backlight', I've read suggestions that involve using this minimal Xorg snippet. You'd need to create a custom file eg /etc/X11/xorg.conf.d/20-intel.conf with a CLI editor (as root)
    Code:
    Section "Device"
         Identifier "card0"
         Driver "intel"
         Option "Backlight" "intel_backlight"
    EndSection
    Then reboot when done.

    Caveat: It does require that 'xf86-video-intel' is installed, and I'm not sure if this would be suitable for your Intel graphics hardware or not.

    Some useful backlight references:
    https://wiki.archlinux.org/index.php/backlight
    https://sites.google.com/site/easyli...not-adjustable

  3. #3
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    Default Re: Brightness key doesn work on my HP Probook450

    At least one Linux Mint user (with same/similar laptop model) used the above approach successfully it would seem so that's promising...
    https://forums.linuxmint.com/viewtopic.php?t=197761

  4. #4

    Default Re: Brightness key doesn work on my HP Probook450

    Thanks for reply.

    Code:
     tom@HP-linux:~> /usr/sbin/hwinfo --gfxcard07: PCI 02.0: 0300 VGA compatible controller (VGA)              
      [Created at pci.378]
      Unique ID: _Znp.GXrratzarxA
      SysFS ID: /devices/pci0000:00/0000:00:02.0
      SysFS BusID: 0000:00:02.0
      Hardware Class: graphics card
      Device Name: "Onboard IGD"
      Model: "Intel VGA compatible controller"
      Vendor: pci 0x8086 "Intel Corporation"
      Device: pci 0x5917 
      SubVendor: pci 0x103c "Hewlett-Packard Company"
      SubDevice: pci 0x837d 
      Revision: 0x07
      Driver: "i915"
      Driver Modules: "i915"
      Memory Range: 0x1ff0000000-0x1ff0ffffff (rw,non-prefetchable)
      Memory Range: 0x1fe0000000-0x1fefffffff (ro,non-prefetchable)
      I/O Ports: 0x4000-0x403f (rw)
      IRQ: 130 (27031 events)
      Module Alias: "pci:v00008086d00005917sv0000103Csd0000837Dbc03sc00i00"
      Driver Info #0:
        Driver Status: i915 is active
        Driver Activation Cmd: "modprobe i915"
      Config Status: cfg=no, avail=yes, need=no, active=unknown
    
    
    Primary display adapter: #7
    Code:
    tom@HP-linux:~> ls -l /sys/class/backlightcelkem 0
    lrwxrwxrwx 1 root root 0 17. led 12.00 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight
    For the case of 'intel_backlight', I've read suggestions that involve using this minimal Xorg snippet. You'd need to create a custom file eg /etc/X11/xorg.conf.d/20-intel.conf with a CLI editor (as root)Code:
    Section "Device"
    Identifier "card0"
    Driver "intel"
    Option "Backlight" "intel_backlight"
    EndSection
    Then reboot when done.
    I made 20-intel.conf, pasted code and reboot. After reboot only prompt appeared. As root I deleted this file, immediately graphical screen started. Fortunately ....

  5. #5

    Default Re: Brightness key doesn work on my HP Probook450

    Quote Originally Posted by deano_ferrari View Post
    At least one Linux Mint user (with same/similar laptop model) used the above approach successfully it would seem so that's promising...
    https://forums.linuxmint.com/viewtopic.php?t=197761
    I tried this, but the same result as I wrote above.... thaks

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