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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 - unexpected scroll event 0 in area state"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94601">94601</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>unexpected scroll event 0 in area state
</td>
</tr>
<tr>
<th>Product</th>
<td>Wayland
</td>
</tr>
<tr>
<th>Version</th>
<td>1.2.x
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<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>
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<th>Component</th>
<td>libinput
</td>
</tr>
<tr>
<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>marco@crepererum.net
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=122389" name="attach_122389" title="evemu record">attachment 122389</a> <a href="attachment.cgi?id=122389&action=edit" title="evemu record">[details]</a></span>
evemu record
Description:
Sometimes the touch pad "tab" function stops working. See "steps to reproduce"
for more details. The problem was introduced recently (before the system worked
totally fine for over 6 months)
Additional info:
* libinput 1.2.2
* xf86-input-libinput 0.17.0
* system is a Lenovo Carbon X1, 2015 edition (3rd gen)
* touchpad dimensions: 100mm w X 55mm h
* kernel is 4.4.5.201603142220-1-grsec (Arch Linux)
evemu recording:
see attachement, the bug happens somewhere at the end, than I used the
"scroll-around" work-around and got a tab-driven click working (see "Steps to
reproduce" section)
/sys/class/dmi/id/modalias:
dmi:bvnLENOVO:bvrN14ET31W(1.09):bd06/26/2015:svnLENOVO:pn20BTS2EJ00:pvrThinkPadX1Carbon3rd:rvnLENOVO:rn20BTS2EJ00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
xinput list-props:
Device 'SynPS/2 Synaptics TouchPad':
Device Enabled (138): 1
Coordinate Transformation Matrix (140): 1.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Tapping Enabled (277): 1
libinput Tapping Enabled Default (278): 0
libinput Tapping Drag Enabled (279): 1
libinput Tapping Drag Enabled Default (280): 1
libinput Tapping Drag Lock Enabled (281): 0
libinput Tapping Drag Lock Enabled Default (282): 0
libinput Accel Speed (283): 0.488789
libinput Accel Speed Default (284): 0.000000
libinput Natural Scrolling Enabled (285): 1
libinput Natural Scrolling Enabled Default (286): 0
libinput Send Events Modes Available (261): 1, 1
libinput Send Events Mode Enabled (262): 0, 0
libinput Send Events Mode Enabled Default (263): 0, 0
libinput Left Handed Enabled (287): 0
libinput Left Handed Enabled Default (288): 0
libinput Scroll Methods Available (289): 1, 1, 0
libinput Scroll Method Enabled (290): 1, 0, 0
libinput Scroll Method Enabled Default (291): 1, 0, 0
libinput Click Methods Available (292): 1, 1
libinput Click Method Enabled (293): 1, 0
libinput Click Method Enabled Default (294): 1, 0
libinput Disable While Typing Enabled (295): 1
libinput Disable While Typing Enabled Default (296): 1
Device Node (264): "/dev/input/event10"
Device Product ID (265): 2, 7
libinput Drag Lock Buttons (297): <no items>
libinput Horizonal Scroll Enabled (266): 1
Kernel synaptics boot log:
psmouse serio1: synaptics: queried max coordinates: x [..5676], y [..4758]
psmouse serio1: synaptics: queried min coordinates: x [1266..], y [1096..]
psmouse serio1: synaptics: Touchpad model: 1, fw: 8.1, id: 0x1e2b1, caps:
0xf003a3/0x943300/0x12e800/0x10000, board id: 3072, fw id: 1795685
psmouse serio1: synaptics: serio: Synaptics pass-through port at
isa0060/serio1/input0
Steps to reproduce:
Work with the touchpad (tab and scroll around), after a while, the tab feature
isn't working anymore, but scrolling and mouse movement seems to behave as
expected. The logs show the following information
/usr/lib/gdm/gdm-x-session[XXXX]: (EE) libinput bug: unexpected scroll event 0
in area state
The tab feature can be restored using one of the following work-arounds:
* go to the GNOME system settings and disable and re-enable the tab settings
* try to "scroll" using 3 fingers, after some tries the libinput seems to
behave normally again</pre>
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</p>
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