On Wed, May 22, 2019 at 09:40:30AM +0200, Pali Rohár wrote: > On Wednesday 22 May 2019 07:30:43 Xiaoxiao Liu wrote: > > Hi Pali, > > > > Ok, and cannot you set ALPS_DUALPOINT flag based on that > > alps_check_is_trackpoint() result and then update > > alps_process_packet_ss4_v3() code to supports also > > V8 trackpoint packets? > > --> Yes, we can do like so, when we use the v8 method to process the trackpoint , the mouse speed is not ideal. > > Then we choose the standard mouse driver. > > Mouse speed is something which is configurable. Have you configured it > somehow? Also there is libinput project should handle these settings > more properly. > > Adding Peter Hutterer, maintainer of libinput to loop. I think he could > help with this problem. libinput has a quirk for a magic multiplier on trackpoints. it was the only solution I found that came close to "working" given that every device seems to provide some other random magic data. Doc for it is here: https://wayland.freedesktop.org/libinput/doc/latest/trackpoint-configuration.html There are also different speeds depending on which xorg driver you'd use (or libinput/Wayland), so a "mouse speed is not ideal" is almost a guarantee, given a large enough variety of setups :) That's why we have the speed toggle, but I'm happy to hear any suggestions on how to make the trackpoint more useful (in libinput anyway). > I do not think it is a good idea to force back to generic PS/2 mouse > driver for touchpads and trackpoints. Native drivers for touchpads and > trackpoints supports multitouch, absolute reporting and lot of other > things... Also calculation of mouse speed from absolute positions on > touchpads can be more easily fixed as from emulated relative movements. Yeah, agree. Using PS/2 mouse drivers means you lose *all* the extra features touchpads have like palm detection, tapping, scrolling, gestures, etc. Cheers, Peter > > Dmitry, what is your opinion about this problem? What should psmouse.ko > do in this situation? Disallow usage of absolute mode and force bare > PS/2 relative mode?
