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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 - Taps often ignored"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101339">101339</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Taps often ignored
</td>
</tr>
<tr>
<th>Product</th>
<td>Wayland
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>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>pauljohn@ku.edu
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=131789" name="attach_131789" title="scroll.evemu">attachment 131789</a> <a href="attachment.cgi?id=131789&action=edit" title="scroll.evemu">[details]</a></span>
scroll.evemu
I notice taps are often ignored.
In another thread (<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Tap timeout seems too low"
href="show_bug.cgi?id=99447">https://bugs.freedesktop.org/show_bug.cgi?id=99447</a>), I
described the problem. Peter Hutterer suggested might link to e80873ca6fad5aa
and I could make a new report. Perhaps you can tell me what to do:)
If finger hits bottom-left touchpad click "button", it seems always to
register. Taps on other part of pad are not. I cannot say that the ignored
clicks are firmer, faster, or different. I am generally not conscious of how
my hand moves while typing until a click is missed.
I notice this since installing Ubuntu 17.04. I did not notice problem before.
libinput-1.6.3.
Device: Dell Precision 5510.
Maybe libinput is not the problem. This is a laptop with which I've had
more-or-less continuous trouble with ports, video, and devices since I got it
in June, 2016. In a previous bug report, Peter fixed problem but mentioned that
he was surprised that a brand new laptop like this was (in 2016) had this
particular (seemingly out-of-date) touchpad device.
Touchpad measurement: 10.5cm x 8cm
My kernel is off the standard:
$ uname -a
Linux delllap-16 4.10.0-20-generic #22+lp1674838v201705030839 SMP Wed May 3
13:41:02 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
This machine had the bug that would cause system freezes
(<a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838">https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838</a>). That is why I'm
running this non-standard kernel. I think I noticed the touchpad problem before
the kernel problem, but cannot say for sure. This kernel does fix the system
freeze problem, though, and that's a higher priority than missed clicks:)
Other info I think you want:
$ cat /sys/class/dmi/id/modalias
dmi:bvnDellInc.:bvr1.2.25:bd05/07/2017:svnDellInc.:pnPrecision5510:pvr:rvnDellInc.:rn0N8J4R:rvrA01:cvnDellInc.:ct9:cvr:
$ sudo udevadm info /sys/class/input/event7
P: /devices/platform/i8042/serio1/input/input6/event7
N: input/event7
E: DEVNAME=/dev/input/event7
E: DEVPATH=/devices/platform/i8042/serio1/input/input6/event7
E: EVDEV_ABS_00=::42
E: EVDEV_ABS_01=::43
E: EVDEV_ABS_35=::42
E: EVDEV_ABS_36=::43
E: ID_BUS=i8042
E: ID_INPUT=1
E: ID_INPUT_TOUCHPAD=1
E: ID_INPUT_TOUCHPAD_INTEGRATION=internal
E: LIBINPUT_DEVICE_GROUP=11/2/7/1b1:isa0060/serio1
E: LIBINPUT_MODEL_SYNAPTICS_SERIAL_TOUCHPAD=1
E: LIBINPUT_MODEL_TOUCHPAD_VISIBLE_MARKER=1
E: MAJOR=13
E: MINOR=71
E: SUBSYSTEM=input
E: USEC_INITIALIZED=2544176
Will attach scroll.evemu. I think it is more difficult to produce this problem
when I'm explicitly trying to produce it, but I did trigger a missed tap after
a few tries.
Tell me what other information helps you.</pre>
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