Have you looked at "lsusb" to see if you can see the touchscreen controller there?  If not, perhaps there's a wiring issue.  It's definitely worth testing touchscreens via a USB port before installing them, if you can.

I can't copy-and-paste from mine at the moment, but I have the Kingston Technology entry as well, and everything else is zeros except for:

Bus 004 Device 002: ID 0eef:0001 D-WAV Scientific Co., Ltd eGalax TouchScreen

This is a fidodido screen without his Xandros-modified controller, plugged into the webcam socket.

Your 15ca:00c3 device is a mouse - from http://www.linux-usb.org/usb.ids:

15ca  Textech International Ltd.
    00c3  Mini Optical Mouse

So your touchscreen isn't appearing at all.  I guess there's a problem with the USB connection to your controller board - make sure the data lines are the right way around, some people have had trouble with that.  Also make sure it's soldered well.

As the touchscreen is plugged into the webcam USB socket, I just checked that it still works. So I switched the plugs over and after a reboot the webcam was fine. So it's not the USB socket on the motherboard.

When I switched the plugs back (touchscreen plugged in and webcam removed) the webcam failed to show a picture - that kind of confirms it that I got the right socket.

the webcam port was turned on already.
I tried something else. Somewhere on the forums I read that /dev/Xxx in the xorg.conf might not work and some people have tried to put usbauto there.


I found that now the computer sees the screen in the lsusb list:

Bus 004 Device 001: ID 0000:0000  
Bus 004 Device 002: ID 0eef:0001 D-WAV Scientific Co., Ltd eGalax TouchScreen
Bus 003 Device 001: ID 0000:0000  
Bus 005 Device 003: ID 0951:1606 Kingston Technology 
Bus 005 Device 001: ID 0000:0000  
Bus 001 Device 001: ID 0000:0000  
Bus 002 Device 003: ID 15ca:00c3  
Bus 002 Device 001: ID 0000:0000

The TouckKit program now runs properly and offers all the tabs to do the calibration.
However, the calibration program still can't talk to the screen. The "Clear Parameter" button in the "Tool" tab reports "Failed to communicate with module".

That may be because I can no longer see tkusb in the lsmod list.

I'll have to figure out how I can get both at the same time: lsmod showing tkusb and lsusb showing the touchscreen-usb device.

Then I'll have to figure out how to get any data out of the thing. I am still waiting for cat /dev/tkpanel0 to deliver any kind of signals.

Last edited by solenostomus (2008-04-23 5:58:45 am)

solenostomus: If you're doubting that the kernel module is working, I'd disable the section in the Xorg.conf file, and just insert the kernel module and dump /dev/tkpanel0 through xxd.  This allows you to insert and remove the kernel module at will, and also prevents the X driver from eating the data before you see it.

I just found out that /etc/rc.local doesn't get run on EEE PC Xandros:
http://forum.eeeuser.com/viewtopic.php?id=21899

From that thread I learnt of the way to run rc.local at startup:

sudo echo "rc.local" > /etc/fastservices

and now my commans in /etc/rc.local are run at startup, so tkusb module is loaded by default.
I actually left out the rmmod line from my rc.local so it now looks like this:

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#

# By default this script does nothing.

####TouchKit kernel module session begin####
insmod /lib/modules/2.6.21.4-eeepc/tkusb.ko
#### TouchKit kernel module session end ####

exit 0

For some reason the touchscreen doesn't respond straight after booting up. But when I restart X (Ctrl+Alt+Backspace) it works - I ran the TouchKit calibration and I can draw pictures and move scrollbars.

Something is not quite done in the right order. I suspect that I need to run the insmod command before X starts and reads the xorg.conf settings.

Last edited by solenostomus (2008-04-23 4:41:20 pm)

Hello, I followed this thread pretty closely, And I wanted to say
THANK YOU!!!You helped me out in a big way with this thread, it should be a sticky for the kiddshop touchscreen!

solenostomus, try to add a line "tkusb" in the file /etc/modules. It works in my case. The rc.local won't help. I've removed everything I add after my tk works.

Last edited by senderj (2008-04-24 3:21:10 am)

Thanks for your help guys. This is what I did to revert some of my experiments above:

- removed /etc/fastservices

- reverted /etc/rc.local to its original state (where it does nothing and doesn't even get called)

- added the line tkusb to /etc/modules

- switched webcam USB port back on (somehow got switched off): sudo echo 1 > /proc/acpi/asus/camera

- the /dev/tkpanel0 had disappereared and changed into /dev/tkpanel0_in & /dev/tkpanel0_out, so I did the sudo mknod /dev/tkpanel0 c 180 180 command again and removed the in/out files from /dev/

- moved tkusb.ko to /lib/modules/2.6.21.4-eeepc/kernel/drivers/usb/input/ (the same directory where the usbtouchscreen.ko was renamed initially to avoid conflicts, NOTE: the module didn't get loaded automatically by /etc/modules at my original location /lib/modules/2.6.21.4-eeepc/tkusb.ko)

- xorg.conf still has the code for the touchscreen at /dev/tkpanel0 in it (see my original post)

- reboot

Et Voila - the touchscreen works! YEAH!

- reboot again

- STILL WORKS!




I can't believe it! I now have a working touchscreen in my beloved Xandros Easy mode! I have to thanks everybody on this thread (esp. gfoot) and all the others, who've been so helpful! Who'd have thought that this could be so fiddly.

I think I now have everything together for a wiki page and I'll make that as soon as I have time this weekend.


PS.: Just to be sure, I switched my EEE PC off, waited a little, started it up just to check that the touchscreen still works - and it does

Last edited by solenostomus (2008-04-24 5:51:01 pm)

After a ton of fiddling I had similar results when operating with the original (non tkusb) module as well. Same instructions as above far as I can tell (I worked on this for a *long* time so I can't remember a lot of the stuff I went through, I was trying everything..), just don't rename usbtouchscreen.ko.. The only problem was calibration - the calibration software wouldn't boot up without ksusb kicking around. After cycling through a bit I actually managed to boot up one of the calibration applications under touchkit.k26/diag/ and calibrate - had weird restart issues where it kept resetting throughout, no idea what I changed but it settled down..

Last edited by ryuujin (2008-04-25 12:37:03 am)

I customised my Easy Mode Settings tab to include an icon for the TouchKit calibration tool.
Click this preview to get the ZIP archive of all the icons:


Here's a view of my Settings tab with the icon :



PS.: The original icon art came from this image
http://www.sxtouch.com/images/touchkit.jpg

solenostomus, can you tell my the step-by-step how to add the icon?