Troubleshooting touchscreen && hal

Nasa nasa01 at
Wed Nov 11 21:45:26 UTC 2009

----- "Xandros Pilosa" <folivora.pilosa at> wrote:

> Dne 11.11.2009 (sre) ob 14:31 +0000 je Nasa zapisal(a):
> > Hi,
> >
> > I have  modified a fdi that I am trying to use with my
> touchscreen... I can tell it isn't being seen
> > as the log file /var/log/Xorg.0.log shows the following:
> >
> > (II) config/hal: Adding input device eGalax Inc. USB TouchController
> > (II) LoadModule: "synaptics"
> > (II) Loading /usr/lib/xorg/modules/input//
> > (II) Module synaptics: vendor="X.Org Foundation"
> > 	compiled for 1.6.4, module version = 1.1.2
> > 	Module class: X.Org XInput Driver
> > 	ABI class: X.Org XInput driver, version 4.0
> > (II) Synaptics touchpad driver version 1.1.2
> > (**) Option "Device" "/dev/input/event4"
> > (--) eGalax Inc. USB TouchController: no supported touchpad found
> > (EE) eGalax Inc. USB TouchController Unable to query/initialize
> Synaptics hardware.
> > (EE) PreInit failed for input device "eGalax Inc. USB
> TouchController"
> > (II) UnloadModule: "synaptics"
> > (EE) config/hal: NewInputDeviceRequest failed (8)
> Hello Nasa,
> this log just tells us, that xorg is loading module
> for
> your touch screen, which is evidently not the right module. It is
> touchscreen, you are writing about?
> As far I can remember, the right Xorg module is evtouch (OSS) or the
> proprietary module from manufacturer, which can be freely downloaded
> from here:
> Why this happens, I can't tell from info you provided. If I may make a
> goes, it could be wrong settings in your xorg.conf file.
> >
> > The file (50-eGalax.fdi) has been located in:
> <snip>
> Some time ago, when I fiddled with Egalax ts in Hardy, I did not have
> to
> make any intervention to hal routine. Ts was automatically recognised
> as
> HID device, correct kernel module (usbhid) was loaded and appropriate
> "/dev/hiddev0" node created.
> You can check type of device with:
> lsusb -v
> and search for string under Egalax :
> "bInterfaceClass 3 Human Interface Device" for HID
> "bInterfaceClass 255 Vendor Specific Class" for non HID type.
> or
> cat /proc/bus/usb/devices
> and search/grep for "TouchController" and "HID"
> This is important, as (from EETI Egalax Driver Guide):
> <quote>
> The HID compliant TouchKit device should NOT work with inbuilt
> USB kernel module “touchkitusb” or “usbtouchscreen”. Instead, it
> should work with “usbhid” or TouchKit USB kernel module “tkusb”.
> It is suggested to add “touchkitusb” and “usbtouchscreen” into the
> file “blacklist” in /etc/hotplug or /etc/modprobe.d to avoid
> conflicts.
> </qoute>
> So I would first check device type I have,
> if I have appropriate kernel module loaded for it and then decide
> which
> xorg module I will use:
> evtouch or proprietary, but I'm sure not synaptic.
> Anyhow, even if you go with evtouch xorg driver, you may find useful
> to
> read the documentation
> which is included in the driver package from the manufacturer in the
> link above.
> In my experience, proprietary driver from eeti just worked
> exceptionally
> well and doc for installation and configuration is straightforward.
> > Additionally, hal list two devices for the touchscreen (as one can
> see from the log).
> Not really, I can just see wrong module loaded, but this is just log
> from the xorg and xorg module.
> As for device recognition and kernel modules for them, you may find
> kern.log, dmesg or syslog more useful.
> <snip>
> Regards
Thanks for replying Pilosa (I appreciate your time),

-- On the log file, it shows the synaptics driver being loaded (as you mentioned) 
and it shows that a driver for "eGalax Inc. USB TouchController" couldn't be loaded
or found.  I only have the one touchscreen installed, so I am unsure why two 
devices for it are showing up.  

-- As you noted, the correct driver would be evtouch.  However, the .fdi file (posted 
above) doesn't seem to be getting read to ensure the correct drive is loaded.  This
would be the crux of my issue...  I was under the impression that 9.10 was suppose to
work with most (if not all) touchscreens using this driver.

--BTW: the xorg.conf file is basically empty as with Ubuntun 9.10, HAL is suppose to 
handle all of that.  And for the most part it does.


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