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Thread: I can't control my Netbook's brightness using terminal

  1. #1
    Join Date
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    I can't control my Netbook's brightness using terminal

    I'm trying to control my Netbook's brightness using terminal.
    This is the output of "ls /sys/class/backlight" command:


    intel_backlight


    Here's the output of "sudo lspci -vnn | grep -A10 VGA" command:


    00:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller [8086:a011] (prog-if 00 [VGA controller])
    Subsystem: Intel Corporation Device [8086:a001]
    Flags: bus master, fast devsel, latency 0, IRQ 40
    Memory at f0300000 (32-bit, non-prefetchable) [size=512K]
    I/O ports at 18d0 [size=8]
    Memory at d0000000 (32-bit, prefetchable) [size=256M]
    Memory at f0000000 (32-bit, non-prefetchable) [size=1M]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [d0] Power Management version 2
    Kernel driver in use: i915


    I've tried this:
    echo 5 | sudo tee /sys/class/backlight/intel_backlight/brightness
    This:
    xbacklight -set 50
    This:
    sudo setpci -s 00:02.0 F4.B=7f
    All these give no output message.
    I added "acpi_backlight=vendor" to kernel paramiter.
    But nothing worked. Please help

  2. #2
    dino99's Avatar
    dino99 is offline Ubuntu addict and loving it
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    Re: I can't control my Netbook's brightness using terminal

    which brand is it ? some need additional package(s) installation (glance at synaptic about that brand)

  3. #3
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    Re: I can't control my Netbook's brightness using terminal

    Quote Originally Posted by dino99 View Post
    which brand is it ? some need additional package(s) installation (glance at synaptic about that brand)
    It's name is "Doel",No brand. It's made in china.

  4. #4
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    Re: I can't control my Netbook's brightness using terminal

    please help

  5. #5
    Join Date
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    Kubuntu 13.04 Raring Ringtail

    Re: I can't control my Netbook's brightness using terminal

    In addition to the parameter "acpi_backlight=vendor", could you also add "acpi_osi=Linux"? (without the quotes)

    Also, what does this say?
    Code:
    cat /sys/class/backlight/intel_backlight/brightness

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