egalax USB touchscreen problems (EVDEV Question)
Peter Hutterer
peter.hutterer at who-t.net
Wed Apr 20 23:03:55 PDT 2011
On Wed, Apr 20, 2011 at 11:17:07AM -0400, Ken Emmons Jr. wrote:
> I found some references to the EVDEV driver in the archives of the
> mailing list having issues with the "touch" event code (330) and my
> touchscreen is also emitting this event. The latest version of xorg
> changelog states that some work was done to try and fix BTN_TOUCH for
> touchscreens. Do I need to upgrade Xorg to test this, or should I just
> get source for evdev and build that against my current Xorg version?
Current evdev won't work against your server, you'd need to either backport
the fixes or update your server too.
But yes, this issue should be fixed.
Cheers,
Peter
> I've attached the evtest.c output for reference:
>
> ./evtest /dev/input/event1
> Input driver version is 1.0.0
> Input device ID: bus 0x3 vendor 0xeef product 0x1 version 0x210
> Input device name: "eGalax Inc. USB TouchController"
> Supported events:
> Event type 0 (Sync)
> Event type 1 (Key)
> Event code 320 (ToolPen)
> Event code 330 (Touch)
> Event type 3 (Absolute)
> Event code 0 (X)
> Value 3345
> Min 30
> Max 4040
> Event code 1 (Y)
> Value 2178
> Min 60
> Max 4035
> Event type 4 (Misc)
> Event code 4 (ScanCode)
> Testing ... (interrupt to exit)
> Event: time -1139204008.401203, type 4 (Misc), code 4 (ScanCode), value
> d0042
> Event: time -1139204008.401215, type 1 (Key), code 330 (Touch), value 1
> Event: time -1139204008.401219, type 3 (Absolute), code 0 (X), value
> 2071
> Event: time -1139204008.401222, type 3 (Absolute), code 1 (Y), value
> 1648
> Event: time -1139204008.401224, -------------- Report Sync ------------
> Event: time -1139204008.407187, type 3 (Absolute), code 0 (X), value
> 2076
> Event: time -1139204008.407192, type 3 (Absolute), code 1 (Y), value
> 1645
> Event: time -1139204008.407194, -------------- Report Sync ------------
> Event: time -1139204008.413181, type 4 (Misc), code 4 (ScanCode), value
> d0042
> Event: time -1139204008.413187, type 1 (Key), code 330 (Touch), value 0
> Event: time -1139204008.413194, -------------- Report Sync ------------
>
> When I assign this device to evdev via xorg.conf or using hal I get the
> message:
>
> (WW) eGalax Inc. USB TouchController: Don't know how to use device
> (II) UnloadModule: "evdev"
>
>
>
>
>
>
>
> ________________________________
>
> From: xorg-bounces+kemmons=qatech.com at lists.freedesktop.org
> [mailto:xorg-bounces+kemmons=qatech.com at lists.freedesktop.org] On Behalf
> Of Ken Emmons Jr.
> Sent: Tuesday, April 19, 2011 11:54 AM
> To: xorg at lists.freedesktop.org
> Subject: egalax USB touchscreen problems
>
>
> Hello,
>
> I tried to post this yesterday but I am not sure if it showed up
> on the mailing list. I am trying to get an egalax touchscreen working on
> an embedded PowerPC target using Debian Lenny distribution and custom
> compiled kernel for 2.6.30.3. Xorg is 1.4.2 and evdev is 2.0.8 (See log
> below).
>
> Anyhow I have more data:
>
> Using HAL I was able to pass some information to the X server
> using this file:
>
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <!-- 10-synaptics.fdi is claiming all input.touchpad's as its
> own. This file is meant to be loaded afterwards and to undo
> any wrong assignments it did.
> -->
> <deviceinfo version="0.2">
> <device>
> <!-- <match key="info.capabilities"
> contains="input.touchpad"> -->
> <match key="info.product" contains="eGalax">
> <merge key="input.x11_driver" type="string">evdev</merge>
> <merge key="input.x11_options.Calibration" type="string">32
> 3990 48 3990</merge>
> <merge key="input.x11_options.InvertX"
> type="string">true</merge>
> </match>
> <!-- </match> -->
> </device>
> </deviceinfo>
>
> The xorg server didn't seem to like loading the evdev driver
> though, and seems to be interpreting my touchscreen as a mouse with
> absolute coordinates, and the wrong calibration. See the following
> output:
>
> Log file output pertaining to input (I have a USB mouse
> and the USB touchscreen plugged in):
>
> ************************************************************************
> ************************************
>
> (WW) Configured Mouse: No Device specified, looking for one...
> (II) Configured Mouse: Setting Device option to
> "/dev/input/mice"
> (--) Configured Mouse: Device: "/dev/input/mice"
> (==) Configured Mouse: Protocol: "Auto"
> (**) Option "CorePointer"
> (**) Configured Mouse: always reports core events
> (**) Option "Device" "/dev/input/mice"
> (==) Configured Mouse: Emulate3Buttons, Emulate3Timeout: 50
> (**) Configured Mouse: ZAxisMapping: buttons 4 and 5
> (**) Configured Mouse: Buttons: 9
> (**) Configured Mouse: Sensitivity: 1
> (**) Option "CoreKeyboard"
> (**) Generic Keyboard: always reports core events
> (**) Option "Protocol" "standard"
> (**) Generic Keyboard: Protocol: standard
> (**) Option "AutoRepeat" "500 30"
> (**) Option "XkbRules" "xorg"
> (**) Generic Keyboard: XkbRules: "xorg"
> (**) Option "XkbModel" "pc105"
> (**) Generic Keyboard: XkbModel: "pc105"
> (**) Option "XkbLayout" "us"
> (**) Generic Keyboard: XkbLayout: "us"
> (**) Option "CustomKeycodes" "off"
> (**) Generic Keyboard: CustomKeycodes disabled
> (II) evaluating device (Configured Mouse)
> (II) XINPUT: Adding extended input device "Configured Mouse"
> (type: MOUSE)
> (II) evaluating device (Generic Keyboard)
> (II) XINPUT: Adding extended input device "Generic Keyboard"
> (type: KEYBOARD)
> (--) Configured Mouse: PnP-detected protocol: "ExplorerPS/2"
> (II) Configured Mouse: ps2EnableDataReporting: succeeded
> (II) Module evdev: vendor="X.Org Foundation"
> compiled for 1.4.2, module version = 2.0.8
> Module class: X.Org XInput Driver
> ABI class: X.Org XInput driver, version 2.0
> (**) eGalax Inc. USB TouchController: always reports core events
> (**) eGalax Inc. USB TouchController: Device:
> "/dev/input/event4"
> (II) eGalax Inc. USB TouchController: Found x and y absolute
> axes
> (II) eGalax Inc. USB TouchController: Found absolute touchpad
> (WW) eGalax Inc. USB TouchController: Don't know how to use
> device
> (II) UnloadModule: "evdev"
> (EE) PreInit returned NULL for "eGalax Inc. USB TouchController"
> (**) eGalax Inc. USB TouchController: always reports core events
> (**) eGalax Inc. USB TouchController: Device:
> "/dev/input/event3"
> (II) eGalax Inc. USB TouchController: Found x and y absolute
> axes
> (II) eGalax Inc. USB TouchController: Found mouse buttons
> (II) eGalax Inc. USB TouchController: Configuring as mouse
> (II) XINPUT: Adding extended input device "eGalax Inc. USB
> TouchController" (type: MOUSE)
>
> output of xinput list:
> ***********************
>
> "eGalax Inc. USB TouchController" id=4
> [XExtensionPointer]
> Num_buttons is 32
> Num_axes is 2
> Mode is Absolute
> Motion_buffer is 256
> Axis 0 :
> Min_value is 42
> Max_value is 1981
> Resolution is 10000
> Axis 1 :
> Min_value is 42
> Max_value is 1981
> Resolution is 10000
>
> The touchscreen does seem to work, but the input appears to be
> coming to my "Generic Mouse" Any clue as to how to troubleshoot this?
>
> thanks,
>
> ~Ken
>
>
>
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