Evo Touch Screen on Fedora 10 Problems...

greenknight04 · #1 30th July 2009, 01:29 AM

Hi, all. I'm working on getting an evo touch screen set up in Fedora 10 for use in a kiosk system. I have it mostly installed- I'm using the evtouch drivers, which are found at http://www.conan.de/touchscreen/evtouch.html and the monitor is connected by USB (it's an Elotech ET1547L-8UWC-1, in case that helps.) I have the monitor set up, and its receiving output from the laptop it's connected to, and I can interact with the laptop through touch. However, I'm running into issues with the touch capability- specifically, where ever I touch on the screen, the cursor goes to the opposite side of the screen from. As you can imagine, this is not particularly what I'm looking for

Any suggestions on the issue would be greatly appreciated. My xorg.conf file can be found at http://pastebin.com/m5956ee7c as well, if that helps. Thanks in advance!

leadgolem · #2 30th July 2009, 09:19 AM

Try uncommenting lines 103 through 106 one at a time and observe the results. It sounds like one or more of your axis's are reversed. You will need to restart your x server to test each change.

greenknight04 · #3 30th July 2009, 06:54 PM

Did that with no such luck. However, I went further, commenting out the entirety of the entry on the touch screen in my xorg.conf, and then deleting it entirely. The result? The touch screen works w/out specifications on the xorg.conf. It also works if I remove the evtouch driver from its location, which means its probably not using the evtouch driver anyway. This leads me to the theory that the touch screen works without any external drivers (it may be using the Fedora mouse driver, although that's merely a hypothesis.) So, that shows that my xorg.conf is not actually affecting the screen. But, this still leaves me with the inverted axises. Any ideas?

leadgolem · #4 31st July 2009, 08:39 AM

Hmm, likely it's using the wacom tablet driver. I would suggest looking through the wacom documentation to see if there is some way to invert the axis.

Likely this is happening because the system is using the wacom driver and not the one actually for the touchscreen.

greenknight04 · #5 31st July 2009, 07:40 PM

Can't seem to find anything about inverting the axis on a tablet. As is, I followed a guide (http://forums.fedoraforum.org/showthread.php?t=212355) to try and solve said problem, but it relied on it being an actual tablet, not registering as one. I tried deleting /usr/share/hal/fdi/policy/20thirdparty/10-linuxwacom.fdi to free it from evdev's auto-grab but that didn't change anything. I am pretty stumped at this point. Anyone know anything at all?

leadgolem · #6 30th August 2009, 12:41 AM

From finally getting my touchscreen setup, you could trying remove the native linuxwacom package, then build the newer linuxwacom source with wacomcpl. Wacomcpl should let you calibrate the screen. That might correct the axis problem.

EDIT: to get xsetwacom and wacomcpl to compile you'll need these.

Code:

su
yum install libX11-devel libXi-devel ncurses-devel xorg-x11-server-devel autoconf automake libtool xorg-x11-server-Xorg hal-devel tcl-devel tk-devel

If wacomcpl doesn't do it then you can use xsetwacom to change the axis. There are 4 options for axis switching.

Code:

xsetwacom set -o "yourdevicename" Rotate CW
xsetwacom set -o "yourdevicename" Rotate HALF
xsetwacom set -o "yourdevicename" Rotate CCW
xsetwacom set -o "yourdevicename" Rotate NONE

You can find out what devices you have with.

Code:

xsetwacom list