It is still a problem, partially.It is possible to use coordinate transformation matrix property (TransformationMatrix option in InputClass section) to assign touchscreens to different displays, but not to different X screens. But, unless system is SLI , or , or Mosaic enabled - that is , it is supported by GPU and chipset -and that is NVIDIA specific, then even with xinerama enabled every GPU is separate X display. In that case , e.g, on x server :0 with screens :0.0, :0.1 and 0:0.2 even with proper matrix, mouse cursor simply jumps to bottom edge of screen, if coordinates do not correspond to to :0.0 - i suspect it is a bug on evdev side.
realistically that makes multiple touchscreen configuration possible only with NVIDIA cards (twinview joins displays into one X screen), and in case of 3 or more displays - only with SLI or BaseMosaic -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-input-evdev in Ubuntu. https://bugs.launchpad.net/bugs/1078272 Title: It's impossible to configure multiple touchscreens using evdev Status in “xserver-xorg-input-evdev” package in Ubuntu: Expired Bug description: We're trying to get a multi-touchscreen (multiple touchscreens not multi touch) setup working with the evdev driver in Natty Narwhal. Basically, the touchscreens are configured and working except that the mapping to the correct X screen is wrong. We set up 5 touchscreens in a row (Xorg ServerLayout "RightOf") and their corresponding touchscreen inputdevices. Using xinput we are able to create a pointer for each of the touchscreens. The following is observed then: When touching any screen, the resulting movement of the pointer is only displayed on the first X screen (there are 5 pointers visible then on this screen.). This is not at all the desired behavior. We would like to attach a touchscreen to a specific X screen. Unfortunately, we found no way to tell the evdev driver to map a InputDevice to a X screen. Older versions of the driver (1.1.2) provided an option "AbsoluteScreen" (see http://manpages.ubuntu.com/manpages/dapper/en/man4/evdev.4.html) but the latest version hasn't anything like this. I know that the evtouch driver would provide a "ScreenNo" option, however evtouch is not available for Natty Narwhal. We also experimented with the Xorg coordinate transformation matrix, but with the result that the mouse movements where still on the first X screen. So my question is: How do I tell the evdev driver to map an InputDevice to a specific X screen? Is there an option line in xorg.conf or is there any method via xinput? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-evdev/+bug/1078272/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
