<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - libinput has problems with precise mouse pointer movement on Lenovo X1v5" href="https://bugs.freedesktop.org/show_bug.cgi?id=103619#c10">Comment # 10</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - libinput has problems with precise mouse pointer movement on Lenovo X1v5" href="https://bugs.freedesktop.org/show_bug.cgi?id=103619">bug 103619</a> from <a class="email" href="mailto:daniel.van.vugt@canonical.com" title="Daniel van Vugt <daniel.van.vugt@canonical.com>"> Daniel van Vugt</a> <pre>Zach, Please log a new bug for that: <a href="https://bugs.freedesktop.org/enter_bug.cgi?product=wayland&component=libinput">https://bugs.freedesktop.org/enter_bug.cgi?product=wayland&component=libinput</a> Philipp, I'm afraid to tell you that after fixing <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - Somehow conditionalize hysteresis (hardware black/whitelist, device property introspection, user-exposed setting, etc)" href="show_bug.cgi?id=98839">bug 98839</a>, the remaining problems with the X1 Carbon gen 4/5 are mostly hardware problems. It's just laggy hardware/firmware. I have verified this myself on both models, and that gen 3 has no such problem, and that many other laptops have no such problem. Only the gen 4 and gen 5 X1 Carbon's have laggy touchpad hardware. I know it's very disappointing. Slightly encouraging is that in mouse emulation mode (single point support), the lag is gone. I don't know how to achieve this in Linux but it's visible during Windows 10 setup. The lag returns after the OS installs multi-touch support. So the lag sounds like it's rooted in the touchpad firmware for multi-touch support. There is only one remaining software fix I can think of that might/should help you. That is to switch to the 'flat' acceleration profile: <a href="https://wayland.freedesktop.org/libinput/doc/latest/pointer-acceleration.html">https://wayland.freedesktop.org/libinput/doc/latest/pointer-acceleration.html</a> However I don't know of any way for regular users to do that. Failing a profile change, this bug is a pure duplicate of <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - Somehow conditionalize hysteresis (hardware black/whitelist, device property introspection, user-exposed setting, etc)" href="show_bug.cgi?id=98839">bug 98839</a>, plus hardware/firmware faults.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>