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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - erratic touchpad behavior, seems too sensitive to stray palm touches"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100571#c15">Comment # 15</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - erratic touchpad behavior, seems too sensitive to stray palm touches"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100571">bug 100571</a>
from <span class="vcard"><a class="email" href="mailto:peter.hutterer@who-t.net" title="Peter Hutterer <peter.hutterer@who-t.net>"> <span class="fn">Peter Hutterer</span></a>
</span></b>
<pre>I understand that it's hard to remember what exactly you did, but it's even
harder to debug something without that information. The attachments look like
pretty normal touches and they *should* be filtered by the disable-while-typing
code but it's unclear why not. Maybe run libinput-debug-events --verbose on the
side and look for events of "event4 - palm: keyboard timeout". If they happen
just before your touch and you're typing slow enough, then this can cause the
effects you're seeing.
I notice the pressure range is quite high, so this bug may be a candidate for
<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Palm detection: ignore moves over a pressure threshold"
href="show_bug.cgi?id=94236">bug 94236</a>. Read through
<a href="https://wayland.freedesktop.org/libinput/doc/latest/touchpad_pressure.html">https://wayland.freedesktop.org/libinput/doc/latest/touchpad_pressure.html</a> and
try to gauge the pressure ranges for your finger during normal use and then
again while you're typing. see if there's a reliable threshold where we can
identify a palm.</pre>
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