ASUS Eee PC 1025c

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Revision as of 20:46, 2 September 2013 by Dfe (talk | contribs) (Bootloader)
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Caution: I am learning linux with arch and my Eee PC. So my solutions may be not the best.


The BIOS doesn't seem to support EFI boot on an ArchISO USB stick, even though it detects it as an UEFI bootable medium. Install with a BIOS bootloader unless you know what you're doing. If you are able to boot in UEFI mode, then please add a tutorial.



You have to change the video driver. If the HDMI cable is plugged in on boot it is enabled automatically. If it is plugged in after boot you can use xrandr to enable the second monitor:

# xrandr --output DVI-0 --auto


You need to know the number of your sound card and the the number of HDMI device:

aplay -l
 **** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: Intel [HDA Intel], Gerät 0: ALC269VB Analog [ALC269VB Analog]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0
Karte 0: Intel [HDA Intel], Gerät 3: HDMI 0 [HDMI 0]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0


In /usr/shared/alsa/alsa.conf search the lines

default.pcm.card 0
default.pcm.device 0

If you change the numbers to your card and device (in my case card is 0 and device is 3) and reboot the audio output switches to HDMI.

User specific

do this and reboot


The audio device can also be configured with /etc/asound.conf So you can create a script that links asound.conf to a configuration depending on the hdmi cable plugged in or not: (for some reason my HDMI device is listed as DVI)
#! /bin/bash
hdmi_status="$(cat /sys/class/drm/card0-DVI-D-1/status)"
ln -f "/etc/alsa/hdmi_$hdmi_status" /etc/alsa/asound.conf
alsactl restore

Configuration files:

pcm.!default {
      type hw
      card 0
      device 3 
pcm.!default {
      type hw
      card 0
      device 0 

Create a symbolic link to /etc/asound.conf

ln -s /etc/alsa/asound.conf /etc/asound.conf

If the user is allowed to run the script and is also allowed to change files in /etc/alsa folder you can bind that script to a key :D If you also want to change to monitor read this.

Screen Brightness


Setting brightness in /sys/class/backlight/acpi_video0/ with the scripts for acpid change the values of the files brightness and actual_brightness but do not have any effect on current screen brightness.

Set the following as kernel parameters in your bootloader

acpi_osi=Linux acpi_backlight=vendor

To make this permant see here

FN Keys

Now there is a folder eeepc-wmi in /sys/class/backlight and the scripts need to be updated

  echo $(($(cat $bl_device)+1)) >$bl_device
  echo $(($(cat $bl_device)-1)) >$bl_device

The scripts change the screen brightness everytime I run them. Unfortunately the acpi events for brightnessup and brightnessdown are not available anymore although the brightnessup key sets brightness to maximum and the brightnessdown key sets the brightness to max_brightness-1 :( (do not now where this happens) --> this may help

When using the Enlightenment 17 window manager, the brightness keys will work without any additional configuration and the backlight can be adjusted using the built-in backlight widget.

AC plug / unplug

        case "$2" in
                case "$4" in
                        logger 'AC unpluged'
                        echo $(($(cat /sys/class/backlight/eeepc-wmi/max_brightness)/2)) > /sys/class/backlight/eeepc-wmi/brightness
                        logger 'AC pluged'
                        echo $(($(cat /sys/class/backlight/eeepc-wmi/max_brightness)-1)) > /sys/class/backlight/eeepc-wmi/brightness
                logger "AC Adapter ACPI action undefined: $2"