Hi Jeff,
On Thu, Dec 18, 2008 at 9:51 PM, Jeff yam...@gmail.com wrote:
Hello.
I have been using the Ubuntu Mobile distro in my Car PC and I love the new
Hildon arrangement that makes it very touch friendly. However I cannot use
my Touch Screen at all.
Over at MP3Car.com here is a link to the forum where we have been trying to
unearth an answer to our
problems:
http://www.mp3car.com/vbulletin/linux/126313-linux-touch-screen-problem.html
The current calibration tool is useless and the current drivers are
uninstallable. The tool that appears to have an answer only appers as a mock
up and I cannot find a package that contains the magical tool. The tool I am
referring to is on Ogra's blog on this
page:http://ograblog.wordpress.com/2008/10/03/the-ubuntu-mobile-beta-images/#comments
If you have a solution, a few of us Linux junkies would love to test a beta
solution.
Actually, I think I got the same touchscreen a work in a project I'm
working on.
I have Ubuntu Mobile (customized) working on a VIA EPIA Mini-ITX with
the touchscreen you were talking about on the forum:
r...@rothera:~# lsusb
Bus 002 Device 002: ID 0eef:0001 D-WAV Scientific Co., Ltd eGalax TouchScreen
And is working. Actually was working from the begining, but the
calibrate was a mess. The cursor was doing weird things.
Now I almost have the perfect calibrate. I still testing options.
The driver I use is evtouch (xserver-xorg-input-evtouch) and I leave
hal to configure the Xorg. On Intrepid (at least) Hal gets the info of
the device from his database and the device itself and generate (on
the fly) the proper virtual xorg.conf.
Actually, the info for configuring the eGalax TouchScreen is stored
for this package on:
/usr/share/hal/fdi/policy/10osvendor/50-eGalax.fdi
But, at least for my screen, were wrong, so I had to changed them.
My first step was detect the max a min with the script the driver provide:
/usr/bin/calibrate_touchscreen
This script gave me the max (X/Y) and min (X/Y), and with those
details I could change the defaults values on the fdi file. The best
way to change that is to copy
/usr/share/hal/fdi/policy/10osvendor/50-eGalax.fdi into
/etc/hal/fdi/policy/ and then, change the values you need.
On that way, you don't mess with the original files (which will be, or
try to be, changed on any update of this package) but still will be
used. In fact, the files on /etc/hal/fdi/* will have more priority
than from /usr/share/hal/fdi/.
To see is the changes were made you need to restart hal:
$ /etc/init.d/hal restart
and then you can see the x11 options changed by doing:
$ UDI=$(hal-find-by-capability --capability input.mouse)
$ lshal -u $UDI
Those command gives you something like:
udi =
'/org/freedesktop/Hal/devices/usb_device_eef_1_noserial_if0_logicaldev_input'
info.capabilities = {'input', 'input.mouse'} (string list)
info.category = 'input' (string)
info.parent =
'/org/freedesktop/Hal/devices/usb_device_eef_1_noserial_if0' (string)
info.product = 'eGalax Inc. Touch' (string)
info.subsystem = 'input' (string)
info.udi =
'/org/freedesktop/Hal/devices/usb_device_eef_1_noserial_if0_logicaldev_input'
(string)
input.device = '/dev/input/event1' (string)
input.originating_device =
'/org/freedesktop/Hal/devices/usb_device_eef_1_noserial_if0' (string)
input.product = 'eGalax Inc. Touch' (string)
input.x11_driver = 'evtouch' (string)
input.x11_options.longtouched_action = 'click' (string)
input.x11_options.longtouched_button = '3' (string)
input.x11_options.longtouchtimer = '750' (string)
input.x11_options.maxx = '1912' (string)
input.x11_options.maxy = '1989' (string)
input.x11_options.maybetapped_action = 'click' (string)
input.x11_options.maybetapped_button = '1' (string)
input.x11_options.minx = '112' (string)
input.x11_options.miny = '76' (string)
input.x11_options.movelimit = '10' (string)
input.x11_options.oneandhalftap_button = '2' (string)
input.x11_options.rotate = 'ccw' (string)
input.x11_options.swapy = true (bool)
input.x11_options.taptimer = '30' (string)
input.x11_options.touched_drag = '1' (string)
linux.device_file = '/dev/input/event1' (string)
linux.hotplug_type = 2 (0x2) (int)
linux.subsystem = 'input' (string)
linux.sysfs_path = '/sys/class/input/input1/event1' (string)
So you can see the options hal has for the device. Now you need to be
sure there is not a any configurtion about the Input Device on the
xorg.conf file, to let hal configuring the X.
I paste you my fdi file for the eGalax TouchScreen, in case this help you:
?xml version=1.0 encoding=UTF-8? !-- -*- SGML -*- --
deviceinfo version=0.2
device
match key=info.product contains=eGalax
match key=info.capabilities contains=input
merge key=input.x11_driver type=stringevtouch/merge
merge key=input.x11_options.minx type=string112/merge
merge key=input.x11_options.miny type=string76/merge
merge
