Need help with touchscreen

[Toffefe]

Hello!
This is my first post on this forum. I'm running ubuntu 10.10 on my Packard Bell butterfly touch tablet pc and I'm having trouble with the touchscreen. I think ubuntu detects it as a touchpad unit. Actually every time I start Ubuntu I have to double-click the screen for the mouse button to work.
I'm not new to ubuntu but I have no experience with update/install drivers.(just installed stuff like emacs and scitools for python)

Is there someone whose had the same problem and has a solution?
Please help me. There's also a gravity sensor that changes the screen direction when you flip the pc around( working in windows 7), is there any support for this also in ubuntu 10.10?


regards,
Toffefe

[Favux]

Hi Toffefe,

Welcome to Ubuntu forums!

Let's find out if Maverick sees the touch screen and what it is calling it. Enter in a terminal:

xinput --list

and post the output.

[Toffefe]

Thanks!
Here's the output:


Unix:~$ xinput --list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Cando 11.6 id=10 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=13 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Sleep Button id=9 [slave keyboard (3)]
↳ CNF9011 id=11 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]

[Favux]

OK, you have a Cando 11.6 touchscreen. Now you have something to google with.

It looks like you can get it working. I see this post: http://ubuntuforums.org/showpost.php...7&postcount=26 from this thread: http://ubuntuforums.org/showthread.php?t=1486671 The last few posts on the last page or so of the thread seem to indicate more drivers are coming.

There are other threads too, like: http://ubuntuforums.org/showthread.php?t=1503442

[bobthebob1234]

Woo someone with my laptop!

I don't know if you have managed to do anything yet, but I have some good news. It is possible to get the touchscreen to work as a touchscreen. I got as far as remapping the p button and screwed everything (don't worry, i did something stupid), so I'm just in the process of reinstalling ubuntu. I will be using ubuntu 10.10 64 bit desktop. (May install netbook on top after). I'll post back some full instructions in plain english when it is installed.

[bobthebob1234]

Getting the touch screen to act as a touch screen

1. Update!
2. open a terminal
3. Install dpkg dev (Note sure if this is absolutely necessary, but if you don't the step 5 moans.)
   

   sudo apt-get install dpkg-dev

4. Install xorg-deb (This is neccessary)
   

   sudo apt-get install xorg-dev

5. Download the source for evdev
   

   sudo apt-get source xserver-xorg-input-evdev

   This will create a bunch of folders in the current directory (you home directory if this is a new terminal)
6. Navigate into the src directory
   

   cd xserver-xorg-input-evdec-2.3.2/src

7. Open evdev.c in your favourite editor
   

   sudo gedit evdev.c

8. Find the line
   

   if (num_buttons || TestBit(BTN_TOOL_FINGER, pEvdev->key_bitmask)) {

   (Line 1942 for me)
   and remove num_buttons || so the line should now look like
   

   if (TestBit(BTN_TOOL_FINGER, pEvdev->key_bitmask)) {

   Save and close
9. Navigate back
   

   cd ..

10. Now the fun bit. Compiling the driver.The following worked for me
    

    sudo .configure

    sudo make install

    This will say a load of stuff, but we are only interested in the line
    

    Libraries have been installed in:

    Mine was /usr/local/lib/xorg/modules/input
11. Now we need to copy the evdev_drv.so to /usr/lib/xorg/modules/input
12. But first I made a back up of the original evdev_drv.so in /usr/lib/xorg/modules/input
    

    cd /usr/lib/xorg/modules/input
    sudo mv evdev_drv.so evdev_drv.old

13. Now copy new evdev_drv.old
    

    If you haven't already:
    cd /usr/lib/xorg/modules/input
    
    Then
    
    cp /usr/local/lib/xorg/modules/input/evdev_drv.so ./

14. Now apparently you need to remove input-tslib and evtouch, however these weren't present on my system.
    

    sudo apt-get purge input-tslib evtouch

15. Finally reboot, and now you have a working touch screen! Yay

(Sources as above)

[Favux]

Hi bobthebob1234,

Sweet! Nice job.

If you use the '--prefix=/usr' flag on the configure line the evdev X driver evdev_drv.so will probably end up in the right place:

./configure --prefix=/usr

Saves you a few steps anyway.

[Toffefe]

Thanks! I tryed the steps and made the mistake of making a backup evdev_drv.old and i rebooted without cp the .so file so the keyboard on my laptop (and usb-keyboards) didn't work. I then tryed recovery mode and " sudo mv evdev_drv.old evdev_drv.so " and now it works! thanks for all help with my problem


bobthebob1234, do you have multitouch for screen and touchpad in ubuntu 10.10?

[bobthebob1234]

I haven't got multi touch to work yet, but my touchscreen acts as a touchscreen now instead of a touchpad. Yes I'm using 10.10

[Favux]

Hi guys,

If you want multitouch in Maverick try ginn. It would be something like the instructions in "1) Maverick: ... a)" on the N-trig HOW TO. I don't know if your touch screens would require the patched source code to work right or whether the untouched (so to speak) source code would work for you. Also ginn's actively being worked on so there might be an update already.