Comments on Profile Post by divisor

  1. SHEEPMAN!
    SHEEPMAN!
    What flavor Linux?
    Nov 19, 2015
  2. SHEEPMAN!
    SHEEPMAN!
    ls /sys/class/backlight
    have you tried changing to internal only in bios?
    can we do this PM?
    Is this adjustment problem or are you getting black screen on boot?
    Sounds stupid but close lid for six+ seconds and reopen.
    Nov 19, 2015
  3. SHEEPMAN!
    SHEEPMAN!
    31 MK2 and above have screen flicker problems if set to external monitor in bios. FYI
    Nov 19, 2015
  4. SHEEPMAN!
    SHEEPMAN!
    dmesg | grep Intel
    Nov 19, 2015
  5. SHEEPMAN!
    SHEEPMAN!
    CORRECTION CF-30 MK2 and up, NOT 31.
    Nov 19, 2015
  6. SHEEPMAN!
    SHEEPMAN!
    Jessie does not support Broadwell Graphics as released. Google Intel 5500 Jessie Broadwell.
    Nov 19, 2015
  7. divisor
    divisor
    OK got it to work doing the following:
    1. upgraded BIOS (in windows)
    2. upgraded to latest ubuntu (intel does not support 14.04 with their latest drivers)
    3. upgraded to latest intel drivers ( 01.org )

    Now I have two entries in /sys/class/backlight : intel_backlight and panasonic. the former works by e.g echo 40>brightness. But somehow the key bindings are changing entries in the panasonic. Will try to fix.

    Thanks!
    Nov 20, 2015
  8. SHEEPMAN!
    SHEEPMAN!
    acpi_video 0 is in my cf-31 mk2 along with intel_backlight panasonic
    Nov 20, 2015
  9. divisor
    divisor
    OK thanks.

    FYI.

    To get fn-key backlight control to work:
    4. added 20-intel.conf
    5. kernel parameters: GRUB_CMDLINE_LINUX="i8042.nomux=1 i8042.noloop=1 acpi_backlight=native acpi_osi="
    Nov 20, 2015