# ASUS Eee PC 901

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This page contains instructions, tips, pointers, and links for installing and configuring Arch Linux on the ASUS EEE 901 PC.

Most of the article can also be applied to eeepc-models which are similar to the 901 such the 901H, 1000 and 1000H. If you discover a configuration or software option applicable to a certain model that differs from what is described in this article, please add it, with a note about which model the suggestion pertains to.

## Install tips for the Asus Eee PC

This wiki page supplements these pages: Installation guide and ASUS Eee PC 701. Please refer to those guides first before following the eeepc-specific pointers on this page.

Most of this information is from the Arch Forum EEE 901 thread. Consult this thread, and other resources on the Arch forum, for more details and discussion.

## Kernel installation and configuration

Follow the Arch Linux installation Guide to install the latest stock distribution from USB media or CDROM. Install the BASE and DEVEL package categories. Reboot your PC.

As of the advent of kernel 2.6.30, all drivers needed for the EEE 901 are included in the Arch Linux stock kernel. In case you would like to compile your own kernel, make sure that you build the following modules:

Network card:

    Device Drivers - Ethernet (1000Mbit) - Atheros L1E Gigabit Ethernet support

WiFi card:

    Device Drivers - Staging Drivers - Ralink 2860

Eee Hotkey stuff:

    Device Drivers - X86 Platform Specific Device Drivers - EeePC Hotkey Driver

Video Camera:

    Device Drivers - Multimedia Devices - Video Capture adapters - V4L USB devices - USB Video Class (UVC)

Sound Card:

    Device Drivers - Sound card support - ALSA - PCI Sound devices - Intel HDA - Build Realtek HDA codec

Touchpad:

    Device Drivers - Input Device support - Mice - PS/2 mouse - Synaptics & Elantech PS/2 protocol ext.

For flawless operation with the eee-control FSB frequency changing mechanism, you have to compile

    Device Drivers - I2C support - I2C Hardware Bus support - Intel 82801 (ICH)

as a module.

For more general information about building custom Arch Linux kernels, see Kernel Compilation.

## OS configuration

To support the devices listed below, make sure the module `eeepc_laptop` is loaded on boot using `modules.d` directory:

    /etc/modules-load.d/eeepc_laptop

    eeepc_laptop

### Networking: ethernet

Ethernet (wired) network access should work right out of the box with atl1e module.

### Networking: wireless

From Kernel 3.0, The staging driver rt2860sta is replaced by mainline driver rt2800pci. See Wireless network configuration#rt2860 and rt2870[broken link: invalid section].

After a bios-upgrade the wireless-card of the Eee PC will be disabled by default, so if you have any troubles with wlan check that it is enabled in the bios.

    # enable
    echo 1 > /sys/devices/platform/eeepc/rfkill/rfkill0/state
    # disable
    echo 0 > /sys/devices/platform/eeepc/rfkill/rfkill0/state

Here's a working example wpa_supplicant config file:

    ctrl_interface=/var/run/wpa_supplicant
    # change ap_scan to 2 if running into problems
    ap_scan=1
    fast_reauth=1
    eapol_version=1

    network={
      key_mgmt=NONE
    }

    network={
      ssid="WPA"
      scan_ssid=1
      proto=WPA
      key_mgmt=WPA-PSK
      pairwise=TKIP
      group=TKIP
      #psk="passphrase"
      psk=hexkey
    }

    network={
      ssid="WEP"
      scan_ssid=1
      key_mgmt=NONE
      #wep_key0="passphrase"
      wep_key0=hexkey
      wep_tx_keyidx=0
    }

Your mileage may vary, but experience seems to show that the `ap_scan=1` parameter is critical. Try tweaking the other "header" settings, too, if you continue to experience problems.

### ACPI (hotkeys)

#### Option 1: acpi-eeepc-generic

Install acpi-eeepc-genericAUR. For this package to work, make sure the eeepc_laptop and rfkill modules are loaded at boot.

Consult the notes included with the install for instructions on configuring `/etc/conf.d/acpi-eeepc-generic.conf`.

This will enable all the `Fn + xx` keys and the four silver hotkey buttons buttons as configured in the default Xandros distribution, with some minor variations. Edit the `/etc/conf.d/acpi-eeepc-generic.conf` file to change or modify the behavior of the function keys.

#### Option 2: configure the stock kernel ACPI features

Enable the ASUS_LAPTOP (Device Drivers > Misc Devices) switch in your kernel config and turn off ACPI_ASUS switch (Power managment options > ACPI).

To enable the FN keys, the WLAN and Camera on/off toggles, etc., activate the EEEPC_LAPTOP switch also (Device Drivers > Misc Devices).

You can use Robertek's PKGBUILD and files for acpi-www901 at http://robertek.brevnov.net/files/linux/arch/acpi-eee901/ as a base to incorporate the stock kernel modules and ASUS OSD into the ACPI system.

Note: The kernel interfaces `/proc/acpi/asus` or `/proc/acpi/eee` are not available with the eeepc_laptop module. The corresponding eeepc_laptop interfaces are files in: `/sys/devices/platform/eeepc/`. You may need to edit some of the scripts under `/etc/acpi/` to point to the correct paths. Also easier links to the interfaces can be found inside of /sys/class/ . For instance the first battery is in /sys/class/power_supply/BAT0/ .

#### ASUS OSD

Asus OSD is included as part of the acpi-eee901 package. Simply add the command `asusosd &` to your desktop manager startup script, or create the file `/etc/xdg/autostart/asusosd.desktop` with these contents:

    [Desktop Entry]
    Encoding=UTF-8
    Name=ASUS OSD
    Comment=ASUS OSD
    Exec=/usr/bin/asusosd
    Terminal=false
    Type=Application
    StartupNotify=false
    Hidden=false

### Bluetooth

Currently, Bluetooth is not enabled with the `Fn+F2` hotkey. To communicate with Bluetooth devices, make sure Bluetooth has been enabled in the BIOS.

To enable/disable bluetooth from the command line :

     # enable
     echo 1 > /sys/devices/platform/eeepc/bt
     # disable
     echo 0 > /sys/devices/platform/eeepc/bt

Install the bluez package. Make sure the bluetooth module is loaded.

See the Arch Linux Bluetooth and Bluetooth mouse wiki pages for more information about configuring and using Bluetooth devices.

### Webcam

To enable/disable the camera:

    # enable
    echo 1 > /sys/devices/platform/eeepc/camera
    # disable
    echo 0 > /sys/devices/platform/eeepc/camera

To record video and take photos, you may use cheese or the wxcam package.

To simply test the camera, you may use `mplayer`:

    mplayer -fps 15 tv://

The webcam is reported to work with Skype.

### Audio

Audio output is enabled with the default ALSA drivers distributed with the kernels. You may need to install the alsa-lib and alsa-utils packages to get full functionality. Make sure the snd-hda-intel module is loaded.

Both the microphone and PC speakers should work out-of-the-box with current versions of the kernel and ALSA drivers. A common gotcha: if you're not getting any sound, did you run `alsamixer` and unmute your channels?

See the Arch Linux ALSA wiki page for more information about configuring and using ALSA.

### X

This article or section is out of date.

Reason: This section is out-of-date, and needs to be cleaned up. (Discuss in Talk:ASUS Eee PC 901#)

#### Video

You will need the xf86-video-intel video driver.

To set-up the touchpad, (including two-fingers scrolling & tapping), just install xf86-input-synaptics (no xorg.conf required).

Some users have reported problems with vsync and the xf86-video-intel driver. These problems may be partially solved in the application (see this forum post.)

##### Connecting an external monitor

The xrandr utility (part of Xorg) can be used to switch into screen modes appropriate either for the EeePC's LCD or an externally connected monitor. Running `xrandr -q` will show you the available output devices and the supported modes. Then run the tool as follows:

    xrandr --output LVDS --off  --output VGA --auto   # disable LCD, enable monitor
    xrandr --output LVDS --auto --output VGA --auto   # enable both
    etc.

Your monitor will probably support a bigger resolution than the LCD. To make use of that additional screen space, tell the X server to create an appropriately large framebuffer by adding the "Virtual" directive to the Screen/Display section in `/etc/X11/xorg.conf`:

    Section "Screen"
      Identifier "Screen0"
      Device     "Card0"
      Monitor    "Monitor0"
      DefaultDepth     24
      SubSection "Display"
          Viewport   0 0
          Depth     24
          Virtual 1600 1200   # max resolution is 1600x1200
      EndSubSection
    EndSection

On the LCD, the additional space will be unused, but when switching to the external monitor, the screen will be. Note that some window managers (such as ratpoison) might need to be restarted to realize that the visible screen size has changed.

##### Letterboxing with XRandR

If you have set up your X server and kernel to use KMS you might have some trouble getting a 800x600 resolution letterboxed (centered) rather than stretched, which might be unpleasant in some programs that do not support 1024x600 such as older games. This is because with KMS the xrandr syntax is a bit different [1]. To get a centered 800x600 visual field on your 1024x600 panel run:

    $ xrandr --output LVDS1 --set "scaling mode" "Center"
    $ xrandr -s 800x600

Replace "800x600" with "1024x600" to go back to the native resolution.

#### Mouse and Synaptics driver

To enable the Synaptics drivers, first install the xf86-input-synaptics package.

You also need the xf86-input-evdev driver for Xorg.

Then make these changes to `/etc/X11/xorg.conf`:

    Section "ServerLayout"
      Identifier     "ArchLinux"
      Screen      0  "Screen0"
      InputDevice    "keyboard"
      InputDevice    "mouse"
      InputDevice    "synaptics"
    EndSection

    [...]

    Section "Files"
      #    RgbPath      "/usr/share/X11/rgb"
      ModulePath   "/usr/lib/xorg/modules"
      FontPath     "/usr/share/fonts/misc"
      FontPath     "/usr/share/fonts/100dpi:unscaled"
      FontPath     "/usr/share/fonts/75dpi:unscaled"
      FontPath     "/usr/share/fonts/TTF"
      FontPath     "/usr/share/fonts/Type1"
    EndSection

    Section "Module"
      Load  "GLcore"
      Load  "glx"
      Load  "record"
      Load  "dri"
      Load  "extmod"
      Load  "xtrap"
      Load  "dbe"
      Load  "freetype"
      Load  "synaptics"
    EndSection

    [...]

    Section "InputDevice"
      Identifier  "mouse"
      Driver      "mouse"
      Option        "Device" "/dev/input/mice"
      Option        "Protocol" "IMPS/2"
      Option        "Emulate3Buttons" "yes"
      Option        "ZAxisMapping" "4 5"
      Option        "CorePointer"
    EndSection

    Section "InputDevice"
      Identifier  "synaptics"
      Driver      "synaptics"
      Option      "Device"           "/dev/psaux"
      Option      "Protocol"         "auto-dev"
      Option      "PalmDetect"       "0"
      Option      "SHMConfig"        "true"
      Option      "SendCoreEvents"   "yes"
      Option      "RBCornerButton"   "0"
      Option      "RTCornerButtom"   "0"
      Option      "TapButton1"       "1"
      Option      "TapButton2"       "2"
      Option      "TapButton3"       "3"
      Option      "AccelFactor"   "0.0320"
      Option      "MaxSpeed"      "0.72"
      Option      "MinSpeed"      "0.6"
      Option      "Emulate3Buttons"       "true"
      Option      "TouchPadOff"       "0"
      Option      "LBCornerButton"        "2"
      Option      "LeftEdge"      "60"
      Option      "RightEdge"     "1070"
      Option      "TopEdge"       "90"
      Option      "BottomEdge"    "680"
      Option      "VertTwoFingerScroll"   "1"
      Option      "HorizTwoFingerScroll"  "1"
      Option      "HorizScrollDelta"  "20"
      Option      "LockedDrags"   "1"
      Option      "CoastingSpeed" "0.13"
      Option      "CircularScrolling"     "1"
      Option      "CircScrollTrigger"     "8"     # 8=Top Left Corner
    EndSection

The latest version of the Elantech touchpad driver patch is available at http://arjan.opmeer.net/elantech/ or here mac how to You'll need to apply this patch to your kernel source, then recompile the kernel. This patch has been tested on the 2.6.27.6 and 2.6.27.7 kernels.

#### Miscellaneous

If you do not have an `xorg.conf` file, and want to configure the keyboard layout on the fly:

    # Set keyboard to cz with qwerty
    setxkbmap cz qwerty

To configure the mouse speed:

    # Set mouse movement and acceleration (you need to tweak this to your needs)
    xset m 2 1

## Performance tips

The following tweaks can be used to improve performance and/or power consumption.

### Cpu frequency

See CPU frequency scaling.

### Boot Booster

Enable Asus Boot Booster feature in BIOS to skip some tests during boot.

    Boot > Boot Settings Configuration > Quick Boot > [Enabled]

### Hardware overview for 901

The following hardware is used in the Asus EEE 901:

    * CPU: 1.6GHz N270 Intel Atom
    * RAM: 1024 MB, DDR2 667
    * ports: 3x USB, VGA
    * LAN/ethernet: Atheros L1e 1000 Mbit
    * WLAN: Ralink rt2860 802.11b/g/n
    * Bluetooth, webcam 1.3 Mpix
    * Card reader: SD, SDHC, MMC
    * touchpad: "Multi-touch" elantech
    * display: 1024x600 8.9"
    * weight: 1 kg
    * battery: Li-ion, 6600mAh
    * HDD: 4 + 8GB, empty slot for 1,8" (remove of the 8GB module needed)
    * Graphics:  Intel GM950 core, 945GME chipset

    00:00.0 Host bridge: Intel Corporation Mobile 945GME Express Memory Controller Hub (rev 03)
    00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express Integrated Graphics Controller (rev 03)
    00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
    00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
    00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02)
    00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02)
    00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02)
    00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 02)
    00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02)
    00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02)
    00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02)
    00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02)
    00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02)
    00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
    00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
    00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller (rev 02)
    00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
    01:00.0 Network controller: RaLink Device 0781

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