Targus ACP50US

I got this off woot and it arrived to today. And it works under linux, with a bit of work.

Update Kernel module

The dock uses the sis usb vga chipset, but sisusb.c does not include the USB vendor/product ID combination, so add that to linux-source-2.6.20/drivers/usb/misc/sisusbvga/sisusb.c
{ USB_DEVICE(0x0711, 0x0550) },
with the other lines that say USB_DEVICE (somewhere around 3435 in my version).

While a monitor is connected, insmod sisusbvga should activate the monitor.


New xorg.conf

In xorg.conf, the driver you want to use is 'sisusb'.

Section "Device"
Identifier "gfx"
Driver "sisusb"
VendorName "Videocard vendor"
BoardName "usb video"
EndSection

To test:

Xorg :1 -config /etc/X11/xorg.conf.usbvga -sharevts


(see also xorg.conf multiseat X)