Can't Set Brightness

After installing maboxlinux version September 2022 ISO refresh i can’t change my Brightness please help me :frowning:

leacy@stella ~ $ inxi -Fxxz
  Kernel: 5.15.65-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
    Desktop: Xfce wm: Openbox dm: LightDM Distro: Manjaro Linux
    base: Arch Linux
  Type: Laptop System: TOSHIBA product: Satellite L640 v: PSK0JL-00F001
    serial: <superuser required>
  Mobo: Intel model: N/A serial: <superuser required> BIOS: INSYDE v: 1.40
    date: 06/03/2010
  ID-1: BAT1 charge: 0% condition: 16.4/34.8 Wh (47.3%) volts: 7.9 min: 7.9
    model: SANYO PA3819U-1BRS serial: N/A status: N/A
  Info: dual core model: Intel Core i3 M 370 bits: 64 type: MT MCP
    arch: Westmere level: v2 rev: 5 cache: L1: 128 KiB L2: 512 KiB L3: 3 MiB
  Speed (MHz): avg: 1771 high: 2354 min/max: 933/2399 cores: 1: 1522
    2: 2354 3: 1745 4: 1463 bogomips: 19156
  Flags: ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Device-1: Intel Core Processor Integrated Graphics vendor: Toshiba
    driver: i915 v: kernel arch: Gen-5.75 ports: active: LVDS-1 empty: VGA-1
    bus-ID: 00:02.0 chip-ID: 8086:0046
  Device-2: Chicony CNF9055 Toshiba Webcam type: USB driver: uvcvideo
    bus-ID: 2-1.1:3 chip-ID: 04f2:b1d6
  Display: x11 server: X.Org v: 21.1.4 compositor: Picom v: git-7e568
    driver: X: loaded: modesetting unloaded: fbdev alternate: vesa gpu: i915
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1366x768 s-dpi: 96
  Monitor-1: LVDS-1 model: Seiko Epson 0x3741 res: 1366x768 dpi: 112
    diag: 345mm (13.6")
  Message: Unable to show GL data. Required tool glxinfo missing.
  Device-1: Intel 5 Series/3400 Series High Definition Audio vendor: Toshiba
    driver: snd_hda_intel v: kernel bus-ID: 00:1b.0 chip-ID: 8086:3b56
  Sound Server-1: ALSA v: k5.15.65-1-MANJARO running: yes
  Sound Server-2: JACK v: 1.9.21 running: no
  Sound Server-3: PulseAudio v: 16.1 running: yes
  Device-1: Broadcom BCM4313 802.11bgn Wireless Network Adapter vendor: Askey
    driver: bcma-pci-bridge v: N/A pcie: speed: 2.5 GT/s lanes: 1
    bus-ID: 02:00.0 chip-ID: 14e4:4727
  Device-2: Qualcomm Atheros AR8152 v1.1 Fast Ethernet vendor: Toshiba
    driver: atl1c v: kernel pcie: speed: 2.5 GT/s lanes: 1 port: 2000
    bus-ID: 03:00.0 chip-ID: 1969:2060
  IF: enp3s0 state: down mac: <filter>
  IF-ID-1: wlp2s0b1 state: up mac: <filter>
  Device-1: Toshiba Askey Bluetooth Module type: USB driver: btusb v: 0.8
    bus-ID: 2-1.6:5 chip-ID: 0930:0214
  Report: rfkill ID: hci0 rfk-id: 1 state: up address: see --recommends
  Local Storage: total: 465.76 GiB used: 362.95 GiB (77.9%)
  ID-1: /dev/sda vendor: Seagate model: ST500LM021-1KJ152 size: 465.76 GiB
    speed: 3.0 Gb/s serial: <filter>
  ID-1: / size: 100.37 GiB used: 5.15 GiB (5.1%) fs: ext4 dev: /dev/sda2
  ID-1: swap-1 type: partition size: 4.88 GiB used: 0 KiB (0.0%) priority: -2
    dev: /dev/sda1
  System Temperatures: cpu: 62.0 C mobo: N/A
  Fan Speeds (RPM): N/A
  Processes: 192 Uptime: 6m Memory: 3.63 GiB used: 1.29 GiB (35.6%)
  Init: systemd v: 251 default: graphical Compilers: gcc: 12.2.0 Packages:
  pm: pacman pkgs: 891 Shell: Bash v: 5.1.16 running-in: terminator
  inxi: 3.3.21

1 Like

Can you try to replace mate-power-manager with xfce4-power-manager?

And see if that helps?

Otherwise, look at Backlight - ArchWiki


Thanks for this reply, I was also having the same problem, and it really helps me solve it.