# Sony Vaio VPCS-A3Z9R

## Installation

To install Arch Linux to Sony Vaio VPCS-A3Z9R you need to make fake RAID work first:

    # modprobe dm_mod
    # ls -l /dev/md

You'll find all mdXXX device created. This prevents fakeraid from working properly, so we will fix it:

    # mdadm -S /dev/mdXXX

Replace XXX by the values from ls command and start dmraid:

    # dmraid -ay

All should work now and you can proceed with usual Arch Linux installation routine.

## Issues

If you have any issues with screen not enabling after it gone blank try disabling display auto switch off in power management settings of your favorite desktop environment.

## Switchable graphics

It is remommended to use opensource drivers from xf86-video-ati package. Somehow, vgaswitcheroo is not working, but switching graphics with PRIME works well:

    # xrandr --setprovideroffloadsink radeon Intel

Use

    # DRI_PRIME=1 mycommand

to enable ATI graphics card for mycommand

## What works

WiFi, HDMI output port and Fn hotkeys (display brightness, volume) are working out of the box.

Category:

- Sony