Install X-Window in Alpine Linux

How to install LXDM + XFCE4 in Alpine Linux 3.6 when testing with Finit.

The following sets up everything needed to run in KVM or virt-manager. The QXL driver is probably not needed for other environments, and there are other icon themes than Tango.

The evdev driver requires the evdev kernel module, and you may also need to load the mousedev kernel module.

setup-alpine
setup-xorg-base
apk add xfce4 lxdm
apk add xf86-video-qxl
apk add xf86-input-keyboard xf86-input-mouse xf86-input-evdev
apk add tango-icon-theme

Now, configure X, it may be necessary when running in KVM or virt-manager:

X -configure

Edit the file xorg.conf.new as needed, possibly you need to disable X automatic features for adding and enabling devices.

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
	Option "AutoAddDevices"    "false"          # <-- 
	Option "AutoEnableDevices" "false"          # <--
EndSection

There seems to be a bug in the Qemu QXL driver, so make sure to also set the following:

Section "Device"
	Option      "ENABLE_SURFACES"	"false"     # <--
	Identifier  "Card0"
	Driver      "qxl"
	BusID       "PCI:0:2:0"
EndSection

Then copy it to its place:

cp xorg.conf.new /etc/X11/xorg.conf

Now you should be able to use startx to test your installation. If you want LXDM to work properly you need to modify /etc/lxdm/lxdm.conf. Find a commented row that says sessions, add a new one that is:

session /usr/bin/startxfce4

For more help with LXDM, see https://wiki.archlinux.org/index.php/LXDM