HP Elitebook 2740p con Xubuntu

Me encontré con un problema de Xubuntu con equipos HP Elitebook con display tactiles.
Luego de dar unas cuantas vueltas, lo pude arreglar.

ir a
/lib/udev/rules.d
por alguna razón WACOM tiene una carpeta aislada.
moví el fichero a
/lib/udev/rules.d
con el nombre
wacom.rules
con el contenido

ACTION!="add|change", GOTO="wacom_end"

# Match all serial wacom tablets with a serial ID starting with WACf
# Notes: We assign NAME though we shouldn't, but currently the server requires it
# We assign the lot to subsystem pnp too because server reads NAME from
# the parent device. Once all that's fixed, as simple SUBSYSTEM="tty"
# will do and the ENV{NAME} can be removed.
SUBSYSTEM=="tty|pnp", SUBSYSTEMS=="pnp", ATTRS{id}=="WACf*", ENV{ID_MODEL}="Serial Wacom Tablet $attr{id}", ENV{ID_INPUT}="1", ENV{ID_INPUT_TABLET}="1", ENV{NAME}="Serial Wacom Tablet $attr{id}"
SUBSYSTEM=="tty|pnp", SUBSYSTEMS=="pnp", ATTRS{id}=="FUJ*", ENV{ID_MODEL}="Serial Wacom Tablet $attr{id}", ENV{ID_INPUT}="1", ENV{ID_INPUT_TABLET}="1", ENV{NAME}="Serial Wacom Tablet $attr{id}"

# comment out the next line if your distribution does not provide systemd
# If a /dev/ttySx device with the WACf name is detected, start the
# wacom-inputattach service with the kernel name as parameter
SUBSYSTEM=="tty|pnp", KERNEL=="ttyS[0-9]*", ATTRS{id}=="WACf*", TAG+="systemd", ENV{SYSTEMD_WANTS}+="wacom-inputattach@%k.service"

LABEL="wacom_end"




Luego creé el fichero
69-xserver-xorg-input-wacom.rules

Con este contenido
# udev rules for wacom tablets.
# These rules were compiled for the Debian GNU/Linux distribution,
# but others may, and indeed are encouraged to, use them also.
#
# Should you do so, PLEASE CO-ORDINATE ANY CHANGES OR ADDITIONS
# of new devices with Ron so that we can try
# to present users with a standard set of device nodes which
# they can rely on across the board.

# Catch the serial tablets and tell X that's what they are
ACTION=="add|change", SUBSYSTEM=="pnp", ATTR{id}=="WACf*", ENV{NAME}="Serial Wacom Tablet"
ACTION=="add|change", SUBSYSTEM=="pnp", ATTR{id}=="FUJ*", ENV{NAME}="Serial Wacom Tablet"
ACTION=="add|change", SUBSYSTEMS=="pnp", ATTRS{id}=="WACf*", ENV{ID_INPUT}="1", ENV{ID_INPUT_TABLET}="1"
ACTION=="add|change", SUBSYSTEMS=="pnp", ATTRS{id}=="FUJ*", ENV{ID_INPUT}="1", ENV{ID_INPUT_TABLET}="1"

KERNEL!="event[0-9]*", GOTO="wacom_end"

# Port specific link for users of multiple tablets of the same type.
# The ID_PATH variable is set by the "path_id" script in an earlier rule file.
ATTRS{idVendor}=="056a", ENV{ID_PATH}=="?*", SYMLINK="input/by-path/$env{ID_PATH}-wacom"

# Multiple interface support for stylus and touch devices.
DRIVERS=="wacom", ATTRS{bInterfaceNumber}=="00", ENV{WACOM_TYPE}="stylus"
DRIVERS=="wacom", ATTRS{bInterfaceNumber}=="01", ENV{WACOM_TYPE}="touch"

# Type-named links for multiple tablets. If you want to use multiple
# tablets of the _same_ type, you will probably need to use the links
# from /dev/input/by-path to identify which is plugged into what usb
# port. For different tablet types though, just pick your links from
# the list below.
#
# We override SYMLINK for tabletpc devices because the by-path link
# is not required with such devices, there will only ever be one.
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0000", SYMLINK+="input/tablet-penpartner"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0003", SYMLINK+="input/tablet-cintiq_partner"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0010", SYMLINK+="input/tablet-graphire"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0011", SYMLINK+="input/tablet-graphire2-4x5"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0012", SYMLINK+="input/tablet-graphire2-5x7"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0013", SYMLINK+="input/tablet-graphire3"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0014", SYMLINK+="input/tablet-graphire3-6x8"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0015", SYMLINK+="input/tablet-graphire4-4x5"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0016", SYMLINK+="input/tablet-graphire4-6x8"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0017", SYMLINK+="input/tablet-bamboofun-4x5"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0018", SYMLINK+="input/tablet-bamboofun-6x8"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0019", SYMLINK+="input/tablet-bamboo1-medium"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0020", SYMLINK+="input/tablet-intuos-4x5"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0021", SYMLINK+="input/tablet-intuos-6x8"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0022", SYMLINK+="input/tablet-intuos-9x12"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0023", SYMLINK+="input/tablet-intuos-12x12"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0024", SYMLINK+="input/tablet-intuos-12x18"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0030", SYMLINK+="input/tablet-pl400"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0031", SYMLINK+="input/tablet-pl500"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0032", SYMLINK+="input/tablet-pl600"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0033", SYMLINK+="input/tablet-pl600sx"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0034", SYMLINK+="input/tablet-pl550"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0035", SYMLINK+="input/tablet-pl800"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0037", SYMLINK+="input/tablet-pl700"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0038", SYMLINK+="input/tablet-pl510"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0039", SYMLINK+="input/tablet-dtu710"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="003f", SYMLINK+="input/tablet-cintiq21ux"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0041", SYMLINK+="input/tablet-intuos2-4x5"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0042", SYMLINK+="input/tablet-intuos2-6x8"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0043", SYMLINK+="input/tablet-intuos2-9x12"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0044", SYMLINK+="input/tablet-intuos2-12x12"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0045", SYMLINK+="input/tablet-intuos2-12x18"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0047", SYMLINK+="input/tablet-intuos2-6x8a"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0060", SYMLINK+="input/tablet-volito"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0061", SYMLINK+="input/tablet-penstation2"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0062", SYMLINK+="input/tablet-volito2-4x5"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0063", SYMLINK+="input/tablet-volito2-2x3"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0064", SYMLINK+="input/tablet-penpartner2"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0065", SYMLINK+="input/tablet-bamboo"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0069", SYMLINK+="input/tablet-bamboo1"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0081", SYMLINK+="input/tablet-graphire_bt-6x8"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0090", SYMLINK="input/tablet-tpc90"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="0093", SYMLINK="input/tablet-tpc93-$env{WACOM_TYPE}"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="009a", SYMLINK="input/tablet-tpc9a-$env{WACOM_TYPE}"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00b0", SYMLINK+="input/tablet-intuos3-4x5"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00b1", SYMLINK+="input/tablet-intuos3-6x8"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00b2", SYMLINK+="input/tablet-intuos3-9x12"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00b3", SYMLINK+="input/tablet-intuos3-12x12"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00b4", SYMLINK+="input/tablet-intuos3-12x19"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00b5", SYMLINK+="input/tablet-intuos3-6x11"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00b7", SYMLINK+="input/tablet-intuos3-4x6"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00b8", SYMLINK+="input/tablet-intuos4-4x6"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00b9", SYMLINK+="input/tablet-intuos4-6x9"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00ba", SYMLINK+="input/tablet-intuos4-8x13"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00bb", SYMLINK+="input/tablet-intuos4-12x19"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00c0", SYMLINK+="input/tablet-dtf521"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00c4", SYMLINK+="input/tablet-dtf720"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00c5", SYMLINK+="input/tablet-cintiq20wsx"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00c6", SYMLINK+="input/tablet-cintiq12wx"
ATTRS{idVendor}=="056a", ATTRS{idProduct}=="00c7", ENV{WACOM_TYPE}!="touch", SYMLINK+="input/tablet-dtu1931"

# Convenience links for the common case of a single tablet. We could do just this:
#ATTRS{idVendor}=="056a", SYMLINK+="input/wacom-$env{WACOM_TYPE}"
# but for legacy reasons, we keep the input/wacom link as the generic stylus device.
ATTRS{idVendor}=="056a", ENV{WACOM_TYPE}!="touch", SYMLINK+="input/wacom"
ATTRS{idVendor}=="056a", ENV{WACOM_TYPE}=="touch", SYMLINK+="input/wacom-touch"

# Check and repossess the device if a module other than the wacom one
# is already bound to it.
#
# We probably don't need this one in the Real World anymore ...
# See the old wacom-tools package if we actually do need to resurrect the
# check_driver script for this again.
#ATTRS{idVendor}=="056a", ACTION=="add", RUN+="check_driver wacom $devpath $env{ID_BUS}"