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Thread: Brightness on laptop doesn't change

  1. #11
    Join Date
    Feb 2011
    Beans
    56

    Re: Brightness on laptop doesn't change

    ok so ive done this and still no joy!!! i have an acer aspire one a0751h!!

    this is what is in my grub

    # If you change this file, run 'update-grub' afterwards to update
    # /boot/grub/grub.cfg.

    GRUB_DEFAULT=0
    GRUB_HIDDEN_TIMEOUT=0
    GRUB_HIDDEN_TIMEOUT_QUIET=true
    GRUB_TIMEOUT=10
    GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
    GRUB_CMDLINE_LINUX="quiet splash"
    GRUB_CMDLINE_LINUX="acpi_osi=Linux acpi_backlight=vendor acpi_skip_timer nomodeset video=uvesafb:mode_option=1366x768-24,mtrr=3,scroll=ywrap pci=nocrs mem=896mb"

    # Uncomment to enable BadRAM filtering, modify to suit your needs
    # This works with Linux (no patch required) and with any kernel that obtains
    # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
    #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xe fefefef"

    # Uncomment to disable graphical terminal (grub-pc only)
    #GRUB_TERMINAL=console

    # The resolution used on graphical terminal
    # note that you can use only modes which your graphic card supports via VBE
    # you can see them in real GRUB with the command `vbeinfo'
    GRUB_GFXMODE=1366x768

    # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
    #GRUB_DISABLE_LINUX_UUID=true

    # Uncomment to disable generation of recovery mode menu entries
    #GRUB_DISABLE_LINUX_RECOVERY="true"

    # Uncomment to get a beep at grub start
    #GRUB_INIT_TUNE="480 440 1"

    GRUB_CMDLINE_LINUX="mem=896mb"
    GRUB_CMDLINE_LINUX="acpi_osi=Linux acpi_backlight=vendor"

    can ya help!!!

    thanks

  2. #12
    Join Date
    Nov 2010
    Location
    Northampton, England
    Beans
    15
    Distro
    Ubuntu

    Re: Brightness on laptop doesn't change

    Score. Fixed my girlfriend's Samsung R519. Thanks

    But not when running on battery any ideas? Cheers.
    Last edited by KingLewy; March 21st, 2011 at 12:32 AM.

  3. #13
    Join Date
    Sep 2011
    Beans
    6

    Red face Re: Brightness on laptop doesn't change

    i can't edit the grub file and I also can't access root...

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