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Message #00833
[Bug 1287341] Re: Touchscreen controls both screens in dual-monitor setup
@Alberto:
steve@aether:~$ xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ SYNAPTICS Synaptics Large Touch Screen id=12 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=15 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Integrated_Webcam_HD id=13 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=14 [slave keyboard (3)]
↳ Dell WMI hotkeys id=16 [slave keyboard (3)]
↳ Integrated_Webcam_HD id=9 [slave keyboard (3)]
steve@aether:~$ xinput list-props 12
Device 'SYNAPTICS Synaptics Large Touch Screen':
Device Enabled (135): 1
Coordinate Transformation Matrix (137): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (260): 0
Device Accel Constant Deceleration (261): 1.000000
Device Accel Adaptive Deceleration (262): 1.000000
Device Accel Velocity Scaling (263): 10.000000
Device Product ID (252): 1739, 2808
Device Node (253): "/dev/input/event12"
Evdev Axis Inversion (264): 0, 0
Evdev Axis Calibration (265): <no items>
Evdev Axes Swap (266): 0
Axis Labels (267): "Abs MT Position X" (283), "Abs MT Position Y" (284), "None" (0), "None" (0)
Button Labels (268): "Button Unknown" (256), "Button Unknown" (256), "Button Unknown" (256), "Button Wheel Up" (141), "Button Wheel Down" (142)
Evdev Middle Button Emulation (269): 0
Evdev Middle Button Timeout (270): 50
Evdev Third Button Emulation (271): 0
Evdev Third Button Emulation Timeout (272): 1000
Evdev Third Button Emulation Button (273): 3
Evdev Third Button Emulation Threshold (274): 20
Evdev Wheel Emulation (275): 0
Evdev Wheel Emulation Axes (276): 0, 0, 4, 5
Evdev Wheel Emulation Inertia (277): 10
Evdev Wheel Emulation Timeout (278): 200
Evdev Wheel Emulation Button (279): 4
Evdev Drag Lock Buttons (280): 0
--
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https://bugs.launchpad.net/bugs/1287341
Title:
Touchscreen controls both screens in dual-monitor setup
Status in Gnome Settings Daemon:
New
Status in OEM Priority Project:
New
Status in OEM Priority Project trusty series:
New
Status in “gnome-settings-daemon” package in Ubuntu:
Triaged
Status in “unity-settings-daemon” package in Ubuntu:
Triaged
Bug description:
My laptop has a touchscreen. It works fine in 14.04 until I plug in an
external monitor. When using an external monitor, input from the
touchscreen is remapped so that the touchscreen provides input to both
monitors. The result is that there is no longer a 1:1 correspondence
between moving your finger and the cursor. This is confusing and
difficult to use.
A touchscreen is a direct input device (vs an indirect one like a
mouse/touchpad); input from the touchscreen should be bound to the
physical display that it's attached to.
To reproduce:
1) On a computer with a touchscreen, use the touchscreen to move a window around, including to the edges of the screen. Note that the window moves exactly with your finger.
2) Plug in an external monitor
3) Try the same actions as in step 1
Expected results:
The touchscreen continues to operate as in step 1, allowing you to manipulate items on the display that contains the touchscreen. The touchscreen does not interact with windows, etc on the external monitor
Actual results:
The touchscreen is remapped across both displays. The result is that touch events no longer happen 'under the finger'. Assuming the two displays are the same size and resolution, moving your finger 1cm will cause the window or other objects to move 2cm onscreen. It becomes impossible to use the touchscreen to interact with widgets (menus, buttons, etc).
This is described in couple places:
http://askubuntu.com/questions/51445/how-do-i-calibrate-a-touchscreen-on-a-dual-monitor-system
http://askubuntu.com/questions/71768/touchscreen-and-additional-external-monitor
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xinput 1.6.1-1
ProcVersionSignature: Ubuntu 3.13.0-14.34-generic 3.13.5
Uname: Linux 3.13.0-14-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
CompizPlugins: [core,commands,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Mon Mar 3 14:41:14 2014
DistUpgraded: 2014-02-12 13:40:42,704 DEBUG enabling apt cron job
DistributionChannelDescriptor:
# This is a distribution channel descriptor
# For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-precise-amd64-20130203-1
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
oem-audio-hda-daily-lts-quantal, 0.201308192259~precise1, 3.5.0-45-generic, x86_64: installed
virtualbox, 4.3.6, 3.13.0-12-generic, x86_64: installed
virtualbox, 4.3.6, 3.13.0-14-generic, x86_64: installed
virtualbox, 4.3.6, 3.13.0-8-generic, x86_64: installed
EcryptfsInUse: Yes
GraphicsCard:
Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:060a]
InstallationDate: Installed on 2013-12-02 (90 days ago)
InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130203-13:50
MachineType: Dell Inc. XPS13 9333
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-14-generic root=UUID=0b9db31c-747b-40ad-bbbd-13a9a29caece ro quiet splash vt.handoff=7
SourcePackage: xinput
UpgradeStatus: Upgraded to trusty on 2014-02-12 (19 days ago)
dmi.bios.date: 11/11/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A01
dmi.board.name: 0GFTRT
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA01:bd11/11/2013:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn0GFTRT:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: XPS13 9333
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.11+14.04.20140218-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0~rc1-1ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0~rc1-1ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Mon Mar 3 11:02:50 2014
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 4933
vendor CMN
xserver.version: 2:1.15.0-1ubuntu6
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