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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - libinput error: libinput bug: Event for missing capability CAP_POINTER on device "N-Trig MultiTouch""
href="https://bugs.freedesktop.org/show_bug.cgi?id=93165">93165</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>libinput error: libinput bug: Event for missing capability CAP_POINTER on device "N-Trig MultiTouch"
</td>
</tr>
<tr>
<th>Product</th>
<td>Wayland
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>libinput
</td>
</tr>
<tr>
<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mail@baedert.org
</td>
</tr></table>
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<pre>I have a Thinkpad T410s, which has a touchscreen and a touchpad.
Whenever I press the touchscreen, I get journal messages like:
libinput error: libinput bug: Event for missing capability CAP_POINTER on
device "N-Trig MultiTouch"
This is reproducible and happens with every touch on the touchscreen. I get
other messages, however, and I'm not sure how to reliable trigger them, like:
(1) libinput error: libinput bug: Unable to find topmost touch
(2) libinput error: libinput bug: invalid tap event when fingers are up
(2) seems to *sometimes* happen when I press the touchpad with 2 fingers at
once, then lift one of the fingers, and (1) happens after that when I use only
one finger (but also just sometimes, I'm not sure if that's the exact way to
reproduce it).
libinput-list-devices prints:
Device: Video Bus
Kernel: /dev/input/event3
Group: 2
Seat: seat0, default
Capabilities: keyboard
Tap-to-click: n/a
Tap drag lock: n/a
Left-handed: n/a
Nat.scrolling: n/a
Middle emulation: n/a
Calibration: n/a
Scroll methods: none
Click methods: none
Disable-w-typing: n/a
Accel profiles: n/a
Device: N-Trig MultiTouch
Kernel: /dev/input/event6
Group: 5
Seat: seat0, default
Capabilities: touch
Tap-to-click: n/a
Tap drag lock: n/a
Left-handed: n/a
Nat.scrolling: n/a
Middle emulation: n/a
Calibration: identity matrix
Scroll methods: none
Click methods: none
Disable-w-typing: n/a
Accel profiles: n/a
Device: N-Trig Touchscreen
Kernel: /dev/input/event7
Group: 5
Seat: seat0, default
Size: 300.00x189.47mm
Capabilities: touch
Tap-to-click: n/a
Tap drag lock: n/a
Left-handed: n/a
Nat.scrolling: n/a
Middle emulation: n/a
Calibration: identity matrix
Scroll methods: none
Click methods: none
Disable-w-typing: n/a
Accel profiles: n/a
Device: SynPS/2 Synaptics TouchPad
Kernel: /dev/input/event19
Group: 7
Seat: seat0, default
Size: 58.88x32.50mm
Capabilities: pointer
Tap-to-click: disabled
Tap drag lock: disabled
Left-handed: disabled
Nat.scrolling: disabled
Middle emulation: n/a
Calibration: n/a
Scroll methods: *two-finger edge
Click methods: none
Disable-w-typing: enabled
Accel profiles: none
Device: TPPS/2 IBM TrackPoint
Kernel: /dev/input/event20
Group: 8
Seat: seat0, default
Capabilities: pointer
Tap-to-click: n/a
Tap drag lock: n/a
Left-handed: disabled
Nat.scrolling: disabled
Middle emulation: disabled
Calibration: n/a
Scroll methods: *button
Click methods: none
Disable-w-typing: n/a
Accel profiles: flat*adaptive
(I removed a few things I think are unimportant like the power button or the
integrated camera, just to make the report shorter).
I have libinput 1.1 installed and wayland 1.9 (which I can't select in bz for
some reason)
This is all using gnome-shell 3.18.3 which I also have in jhbuild, so if you
need more information or if I should test a patch, that's fine.</pre>
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