From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Hutterer Subject: Re: =?utf-8?B?562U5aSNOiDnrZTlpI06IOetlA==?= =?utf-8?B?5aSNOiBbUEFUQ0hdIGlucHV0?= =?utf-8?Q?=3A?= alps-fix the issue the special alps trackpoint do not work. Date: Thu, 23 May 2019 16:01:54 +1000 Message-ID: <20190523060154.GA10526@jelly> References: <20190520110149.27107-1-sliuuxiaonxiao@gmail.com> <345b62e1-407e-7a03-9b03-486bbf5a0a8e@canonical.com> <20190521094622.syeub6tcqhbyc7sg@pali> <20190522063546.kb74mxeprkauicul@pali> <20190522074030.64sy7xt3wnomtxjb@pali> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Return-path: Content-Disposition: inline In-Reply-To: <20190522074030.64sy7xt3wnomtxjb@pali> Sender: linux-kernel-owner@vger.kernel.org To: Pali =?iso-8859-1?Q?Roh=E1r?= Cc: Xiaoxiao Liu , dmitry.torokhov@gmail.com, Hui Wang , XiaoXiao Liu , "linux-input@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Xiaojian Cao , "zhangfp1@lenovo.com" List-Id: linux-input@vger.kernel.org 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?