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  1. 9th February 2010, 10:12 AM #1
    DuconLajoie
    DuconLajoie is offline Registered User
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    HP Touchsmart TX2 touchscreen doesn't work on FC12

    Hi,

    I just switched from FC10 to FC12, and much to my dismay, the touchscreen no longer works. I wasn't able to find a solution on the web, hopefully some gentle soul will answer my problem.

    • The hardware is recognised correctly, because
      Code:
      hexdump /dev/hidraw0
      gives an output when I over the stylus over the screen.

      Note: I used hexdump because I couldn't find the wacdump utility anymore. Has it disappeared?

    • I played with HAL rules so that the appropriate wacom driver is loaded for the tablet. I modified /etc/hal/fdi/policy/10-synaptics.fdi, taken from /usr/share/hal/fdi/policy/20thirdparty/10-synaptics.fdi, as follow (to avoid trying to load Synaptics driver for the touchpad feature of the tablet):

      Code:
      <?xml version="1.0" encoding="ISO-8859-1"?>
<deviceinfo version="0.2">
  <device>
    <match key="info.capabilities" contains="input.touchpad">
        <match key="info.product" contains="Synaptics">
                <merge key="input.x11_options.TapButton1" type="string">1</merge>
                <merge key="input.x11_options.TapButton2" type="string">3</merge>
                <merge key="input.x11_options.TapButton3" type="string">2</merge>
                <merge key="input.x11_driver" type="string">synaptics</merge>
                <merge key="input.x11_options.VertTwoFingerScroll" type="string">true</merge>
        </match>
    </match>
  </device>
</deviceinfo>
      I modified /etc/hal/fdi/policy/10-wacom.fdi, taken from /usr/share/hal/fdi/policy/20thirdparty/10-wacom.fdi, as follow:

      Code:
      <?xml version="1.0" encoding="ISO-8859-1"?>
<!-- this is probably a bit imprecise -->
<deviceinfo version="0.2">
  <device>
    <match key="info.category" contains="input">
      <match key="info.product" contains_outof="Wacom;WALTOP;WACOM">
        <merge key="input.x11_driver" type="string">wacom</merge>
      </match>
    </match>
    <match key="info.capabilities" contains="serial">
      <match key="@info.parent:pnp.id" contains_outof="WACf;FUJ02e5;FUJ02e7">
        <append key="info.capabilities" type="strlist">input</append>
        <merge key="input.x11_driver" type="string">wacom</merge>
        <merge key="input.x11_options.ForceDevice" type="string">ISDV4</merge>
        <merge key="input.device" type="copy_property">serial.device</merge>
      </match>
    </match>
    <!-- N-Trig Duosense Electromagnetic Digitizer -->
    <match key="info.product" contains="HID 1b96:0001">
      <match key="info.parent" contains_outof="if0;if1">
       <merge key="input.x11_driver" type="string">wacom</merge>
      </match>
    </match>
  </device>
</deviceinfo>
    • I obtained the following information from lshal:

      Code:
      udi = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if1_hiddev'
  hiddev.application_pages = {'Unknown page 0xd0002', 'Unknown page 0xd0004'} (string list)
  hiddev.device = '/dev/usb/hiddev1'  (string)
  hiddev.product = 'HID 1b96:0001'  (string)
  info.bus = 'usb'  (string)
  info.capabilities = {'hiddev'} (string list)
  info.category = 'hiddev'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if1'  (string)
  info.product = 'HID 1b96:0001'  (string)
  info.subsystem = 'usb'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if1_hiddev'  (string)
  input.x11_driver = 'wacom'  (string)
  linux.device_file = '/dev/usb/hiddev1'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:14.5/usb7/7-2/7-2:1.1/usb/hiddev1'  (string)

udi = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if1_logicaldev_input'
  info.capabilities = {'input', 'input.touchpad'} (string list)
  info.category = 'input'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if1'  (string)
  info.product = 'HID 1b96:0001'  (string)
  info.subsystem = 'input'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if1_logicaldev_input'  (string)
  input.device = '/dev/input/event8'  (string)
  input.originating_device = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if1'  (string)
  input.product = 'HID 1b96:0001'  (string)
  input.x11_driver = 'wacom'  (string)
  linux.device_file = '/dev/input/event8'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'input'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:14.5/usb7/7-2/7-2:1.1/input/input8/event8'  (string)

udi = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if0_hiddev'
  hiddev.application_pages = {'Unknown page 0xd0002', 'Unknown page 0xd0004'} (string list)
  hiddev.device = '/dev/usb/hiddev0'  (string)
  hiddev.product = 'HID 1b96:0001'  (string)
  info.bus = 'usb'  (string)
  info.capabilities = {'hiddev'} (string list)
  info.category = 'hiddev'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if0'  (string)
  info.product = 'HID 1b96:0001'  (string)
  info.subsystem = 'usb'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if0_hiddev'  (string)
  input.x11_driver = 'wacom'  (string)
  linux.device_file = '/dev/usb/hiddev0'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'usb'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:14.5/usb7/7-2/7-2:1.0/usb/hiddev0'  (string)

udi = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if0_logicaldev_input'
  info.capabilities = {'input', 'input.touchpad'} (string list)
  info.category = 'input'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if0'  (string)
  info.product = 'HID 1b96:0001'  (string)
  info.subsystem = 'input'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if0_logicaldev_input'  (string)
  input.device = '/dev/input/event7'  (string)
  input.originating_device = '/org/freedesktop/Hal/devices/usb_device_1b96_1_noserial_if0'  (string)
  input.product = 'HID 1b96:0001'  (string)
  input.x11_driver = 'wacom'  (string)
  linux.device_file = '/dev/input/event7'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'input'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:14.5/usb7/7-2/7-2:1.0/input/input7/event7'  (string)
    • This results in the following initialization on Xorg load:

      Code:
      II) config/hal: Adding input device HID 1b96:0001
(II) LoadModule: "wacom"
(II) Loading /usr/lib64/xorg/modules/input/wacom_drv.so
(II) Module wacom: vendor="X.Org Foundation"
        compiled for 1.7.4, module version = 0.10.4
        Module class: X.Org XInput Driver
        ABI class: X.Org XInput driver, version 7.0
(**) Option "Device" "/dev/input/event8"
(II) HID 1b96:0001: type not specified, assuming 'stylus'.
(II) HID 1b96:0001: other types will be automatically added.
(**) HID 1b96:0001: always reports core events
(II) HID 1b96:0001: hotplugging dependent devices.
(**) Option "Device" "/dev/input/event8"
(**) HID 1b96:0001 touch: always reports core events
(II) XINPUT: Adding extended input device "HID 1b96:0001 touch" (type: TOUCH)
(--) HID 1b96:0001 touch: using pressure threshold of 15 for button 1
(--) HID 1b96:0001 touch: Wacom Unknown USB tablet speed=38400 maxX=0 maxY=0 maxZ=256 resX=1016 resY=1016  tilt=enabled
(--) HID 1b96:0001 touch: top X=0 top Y=0 bottom X=9600 bottom Y=7200 resol X=1016 resol Y=1016
(II) HID 1b96:0001: hotplugging completed.
(II) XINPUT: Adding extended input device "HID 1b96:0001" (type: STYLUS)
(--) HID 1b96:0001: top X=0 top Y=0 bottom X=0 bottom Y=0 resol X=1016 resol Y=1016
(II) config/hal: Adding input device HID 1b96:0001
(**) Option "Device" "/dev/input/event7"
(II) HID 1b96:0001: type not specified, assuming 'stylus'.
(II) HID 1b96:0001: other types will be automatically added.
(**) HID 1b96:0001: always reports core events
(II) HID 1b96:0001: hotplugging dependent devices.
(**) Option "Device" "/dev/input/event7"
(**) HID 1b96:0001 touch: always reports core events
(II) XINPUT: Adding extended input device "HID 1b96:0001 touch" (type: TOUCH)
(--) HID 1b96:0001 touch: using pressure threshold of 15 for button 1
(--) HID 1b96:0001 touch: Wacom Unknown USB tablet speed=38400 maxX=0 maxY=0 maxZ=256 resX=1016 resY=1016  tilt=enabled
(--) HID 1b96:0001 touch: top X=0 top Y=0 bottom X=9600 bottom Y=7200 resol X=1016 resol Y=1016
(II) HID 1b96:0001: hotplugging completed.
(II) XINPUT: Adding extended input device "HID 1b96:0001" (type: STYLUS)
(--) HID 1b96:0001: top X=0 top Y=0 bottom X=0 bottom Y=0 resol X=1016 resol Y=1016
      As you can see, two devices (/dev/input/event7 and /dev/input/event8) are detected and configured for the wacom driver. Yet, nothing happens when I use the stylus or if I tap the screen.


    Kernel: 2.6.31.12-174.2.3.fc12.x86_64
    Wacom: xorg-x11-drv-wacom-0.10.4-1.fc12.x86_64

    I tested this on XFCE 4.6.1 and Gnome as well, without success.
    Can anyone help me?

    Thanks!
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  2. 9th February 2010, 10:30 PM #2
    DuconLajoie
    DuconLajoie is offline Registered User
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    Workaround with evdev

    OK, for those interested, I found a workaround. It consists in using the generic evdev driver instead of the wacom one.

    Copy the provided wacom HAL file to /etc/hal/fdi/policy/

    Code:
    cp /usr/share/hal/fdi/policy/20thirdparty/10-wacom.fdi /etc/hal/fdi/policy/
    Replace its content by:

    Code:
    <?xml version="1.0" encoding="ISO-8859-1"?>
<!-- this is probably a bit imprecise -->
<deviceinfo version="0.2">
  <device>
    <match key="info.category" contains="input">
      <match key="info.product" contains_outof="Wacom;WALTOP;WACOM">
        <merge key="input.x11_driver" type="string">wacom</merge>
      </match>
    </match>
    <match key="info.capabilities" contains="serial">
      <match key="@info.parent:pnp.id" contains_outof="WACf;FUJ02e5;FUJ02e7">
        <append key="info.capabilities" type="strlist">input</append>
        <merge key="input.x11_driver" type="string">wacom</merge>
        <merge key="input.x11_options.ForceDevice" type="string">ISDV4</merge>
        <merge key="input.device" type="copy_property">serial.device</merge>
      </match>
    </match>
    <!-- N-Trig Duosense Electromagnetic Digitizer -->
    <match key="info.product" contains="HID 1b96:0001">
      <match key="info.parent" contains="if0">
       <merge key="input.x11_driver" type="string">evdev</merge>
      </match>
    </match>
  </device>
</deviceinfo>
    The only modification is to change line
    Code:
    <merge key="input.x11_driver" type="string">wacom</merge>
    by
    Code:
    <merge key="input.x11_driver" type="string">evdev</merge>
    It works for the stylus and fingers, but the button on the side of the stylus is assigned to the left click.
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