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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Can't manage acceleration profile on HP 255 G5 "SynPS/2 Synaptics TouchPad""
href="https://bugs.freedesktop.org/show_bug.cgi?id=99695#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Can't manage acceleration profile on HP 255 G5 "SynPS/2 Synaptics TouchPad""
href="https://bugs.freedesktop.org/show_bug.cgi?id=99695">bug 99695</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>ok, let me rephrase this: without implementing half the xserver acceleration
code in libinput, I cannot reproduce the synaptics behavior in libinput. even
then there is no guarantee it will behave the same way because it scales
depending on screen size and libinput does not have access to that. So it's
nice that you don't care how it's done, but I do and it's virtually impossible.
right now, most of what I get is people telling me how it doesn't work and how
scandalous this situation is, but what I really need is people who are willing
to help out *fixing* it. because right now, I'm virtually the only person
working on libinput, and time is not infinite.
<span class="quote">> Are you saying my touchpad has only "accelerated profile"?</span >
yes. you can try to switch profiles around or even effectively disable the
acceleration for testing but it does require some developer skills.
note that short of relatively fast movements, no acceleration should be applied
[1]. in fact, we still slow down the touchpad by a magic factor 0.4 anyway
(compared to just forwarding device units). so if slow motions are too fast,
then something else weird is going on.
[1]
<a href="https://who-t.blogspot.com.au/2016/12/libinput-touchpad-pointer-acceleration.html">https://who-t.blogspot.com.au/2016/12/libinput-touchpad-pointer-acceleration.html</a></pre>
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