I hope that's the right place to report that, I'm using xorg, not wayland under debian. libinput: 1.9.4-2 xserver-xorg-input-libinput 0.26.0-1 dmesg tells me about the device: synaptics: Touchpad model: 1, fw: 8.2, id: 0x1e2a1, caps: 0xf00323/0x840300/0x12e800/0x0, board id: 3038, fw id: 2375007 Even when set the acceleration too 1.0, it still moves the pointer way too slow (for me). I don't know exactly how you implemented that acceleration thing, but can't you just make an acceleration of +1 absolutely incredible insanly fast! so then users can find their own acceleration like 0.732? or just allow accelerations bigger than 1? This will relieve you from bugreports like this one in the future ;-). The palm detection is not working reliable on that device. When I try it out in indentionaly it works, but when I write texts, maybe once per minute it gets a click and resets the focus, which is incredibly annoying. It also seems to register a click a lot of times, when I move my right hand from the touchpad back to the keyboard. The touchpad is supposed to register a middle click, when I do a click in the middle, between the left and right mouse pointer. Sometimes it works, mostly it doesn't (I'm not sure if that is a software or hardware issue). Most of the times I hit left or right button when trying to do that, the area to register that click is waaay to small. When working with low light it's even practically impossible to hit the right spot. at least until I get an usuable mouse speed I'll go back to input-synaptics.
btw. if you could make use of some debug output or similar for the palmdetection i'd happily provide it (just tell me how). ps. I know, bug reports always sound that negative, but otherwise the whole thing is working pretty well :-), just the speed is really an absolute no go and I miss some settings from synaptics driver but no deal breaker, and I hope they'll find their way into the new driver sooner or later :-)...
please attach an evemu-record that shows one of the palm detection issues. If it's the same hardware as the xps 9365 then the issue is simply that we don't get enough information from the touchpad to do palm detection and disable-while-typing (which we already have) is all we can do. as for the slow acceleration, this is likely related bug 101139
I have been testing a Dell XPS 13 (5th gen) today and find the fix for bug 98839 is all it needs to address the responsiveness problems. That's due for release in libinput 1.10. Although it sounds like you're covering multiple problems in a single bug report here.
Created attachment 136754 [details] 2 events where palmdetection didn't work In the attached file, I've logged two events, when the palmdetection didn't work and the Textbox I was working with lost focus.
Right, so the basic problem with these touchpads is that they don't give us any information beyond position. There is no pressure or touch size information, so any touch to us looks like a valid touch. The only palm detection that kick in here are the edge detection and disable-while-typing (see http://wayland.freedesktop.org/libinput/doc/latest/palm_detection.html) I don't have any good solutions here, but I'd appreciate any good ideas you may have
3 months later and I'm closing this based on comment #3. The palm detection isn't something we can fix because we don't get the data from the touchpad.
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