<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Lenovo P50 - Slow fine touchpad movement makes it jump" href="https://bugs.freedesktop.org/show_bug.cgi?id=105022#c40">Comment # 40</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Lenovo P50 - Slow fine touchpad movement makes it jump" href="https://bugs.freedesktop.org/show_bug.cgi?id=105022">bug 105022</a> from <a class="email" href="mailto:peter.hutterer@who-t.net" title="Peter Hutterer <peter.hutterer@who-t.net>"> Peter Hutterer</a> <pre>Krasi: I've reverted the patch upstream, (commit e8cb7e4) Unsure how it can affect scrolling but at this point I'm so out of time for everything that I'll need your/someone's help debugging this any further, sorry. Tim: can we move this to a separate bug please? This one is too noisy to still figure out what's going on. As a general tip - when you're working on libinput, put printfs in everywhere and run either sudo ./build/libinput-debug-events (commandline) or sudo ./build/libinput-debug-gui (a GUI). No need to install and restart X just for basic testing. If even the above makes no difference, it's likely that the model flag is never applied, put a printf in for that in evdev.c. > I plan to understand the acceleration logic and change it somehow, so that > there must be a certain number of events before acceleration is applied, > similar to the idea in the code above. That's an interesting idea. We previously had code that we required N events for the pointer to start moving, but that didn't work well, too laggy. But not having acceleration for the first N events could work (N <=2, I suspect...)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>