Thank you Gendo! This was a big step in the right direction. With this information, I was able to get my touch screen working to a satisfactory degree. I had to do a couple things differently in order to get it working right though.
First, when I tried to compile the patched source, it told me that I was missing xorg-server and xproto. I remedied this with:
$ sudo apt-get install xserver-xorg-dev
Second, when I modified the xorg.conf file and rebooted, gdm refused to start. I looked through the xorg.conf file again, and found that the line Identifier "Touchscreen" should not appear in Section "ServerLayout" so comment or delete this line.
I downloaded and compiled the hidDeviceDump program and in the terminal typed:
$ sudo hidDeviceDump /dev/usb/cando_touch
This seemed to be a very helpful program in determining the x and y coordinates for the touch screen. The coordinates according to hidDeviceDump are as follows:
0,0 4000,0
0,4000 4000,4000
Of course these numbers are aproximate. So I made these modifications to the xorg.conf file, and now my touch screen is working like a charm.
Option "CornerTopLeftX" "80"
Option "CornerTopLeftY" "80"
Option "CornerTopRightX" "4020" # 1920 for 23"
Option "CornerTopRightY" "80"
Option "CornerBottomLeftX" "80"
Option "CornerBottomLeftY" "4020" # 1080 for 23"
Option "CornerBottomRightX" "4020" # 1920 for 23"
Option "CornerBottomRightY" "4020" # 1080 for 23"
Minor tweaks to these values may need to be made, but it's working great for me!
Update: I've been playing with it for a while, and there are still problems with netbook launcher. It seems most applications work fine with the touch screen. The problem is when trying to tap icons in netbook launcher, it grabs them as if I'm trying to move them.
This doesn't happen with the touch pad or with the usb mouse. Also, the problem doesn't seem to affect the "Favorites" and "Files & Folders" menus.
Update again: It seems to be related to this bug report, so we'll need to keep an eye on their progress. https://bugs.launchpad.net/netbook-r...er/+bug/486381. At least that means it is an issue with netbook launcher rather than the touch screen or driver.
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