Public bug reported:

When I plug in my USB Graphire4, the both the pen and the pad buttons
work as expected, but after the first pen input, the buttons no longer
generate X events.  I can reliably trigger this problem as follows:

1. Plug in the pad
2. Use stylus (works as expected)
3. Press pad buttons (works as excpected)
4. Use stylus again (works as expected)
5. Press pad buttons again (no X events are generated until unplugging and 
re-connecting the pad)

This problem began on upgrade from Ubuntu 10.10 to 11.04, and it also
occurs on a fresh install of 11.04.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-input-wacom 1:0.10.11-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-9.43-generic-pae 2.6.38.4
Uname: Linux 2.6.38-9-generic-pae i686
Architecture: i386
CompizPlugins: 
[core,bailer,detection,composite,opengl,compiztoolbox,decor,shift,gnomecompat,vpswitch,mousepoll,imgpng,move,grid,wall,place,regex,wobbly,winrules,resize,blur,unitymtgrabhandles,scale,animation,session,expo,workarounds,ezoom,unityshell]
CompositorRunning: compiz
CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order 
/var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission 
denied
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes: 
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x800 1280x720 1152x768 1024x768 800x600 848x480 720x480 640x480
 edid-base64: 
AP///////wBMo0JRAAAAAAASAQOAHhN4CgfFl1dTjCcgUFQAAAABAQEBAQEBAQEBAQEBAQEBFBsAiFAgEDAMQDMAL74QAAAZAAAADwAAAAAAAAAAACOHAmQAAAAA/gBTQU1TVU5HCiAgICAgAAAA/gAxNDFBVDEzLUgwMQogADk=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes: 
 edid-base64:
Date: Sat May 14 13:24:12 2011
DistUpgraded: Log time: 2010-11-19 10:33:15.197765
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 lirc, 0.8.7, 2.6.38-9-generic-pae, i686: installed  (WARNING! Diff between 
built and installed module!)
 lirc, 0.8.7, 2.6.38-8-generic-pae, i686: installed  (WARNING! Diff between 
built and installed module!)
 lirc, 0.8.7, 2.6.38-9-generic, i686: installed
GraphicsCard:
 ATI Technologies Inc M880G [Mobility Radeon HD 4200] [1002:9712] (prog-if 00 
[VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:3642]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: Hewlett-Packard HP Pavilion dv4 Notebook PC
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-9-generic-pae 
root=UUID=0c0a8a91-bb82-456a-9ff1-9bdf26cffa6c ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xf86-input-wacom
UpgradeStatus: Upgraded to natty on 2011-04-21 (23 days ago)
dmi.bios.date: 12/03/2009
dmi.bios.vendor: Insyde
dmi.bios.version: F.16
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 3642
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 40.23
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: N/A
dmi.modalias: 
dmi:bvnInsyde:bvrF.16:bd12/03/2009:svnHewlett-Packard:pnHPPaviliondv4NotebookPC:pvr049D210000241210000020000:rvnHewlett-Packard:rn3642:rvr40.23:cvnHewlett-Packard:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv4 Notebook PC
dmi.product.version: 049D210000241210000020000
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:0.0.16+git20110107+b795ca6e-0ubuntu7

** Affects: xf86-input-wacom (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug compiz-0.9 i386 natty needs-reassignment regression-update 
running-unity ubuntu

-- 
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which is subscribed to xf86-input-wacom in Ubuntu.
https://bugs.launchpad.net/bugs/782756

Title:
  USB Graphire4 pad buttons stop working after pen input

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