Trackpad woes

[joshw]

I just posted with similar issues as I hadn't seen the last few messages in this thread.  I'm having the same issue (received mine yesterday).  Are you also seeing "failed to apply/disable psr" messages repeating in dmesg?  Have you tried any alternate OSs yet? 
[  712.933141] [drm:analogix_dp_bridge_atomic_enable [analogix_dp]] *ERROR* Failed to disable psr -110
[  715.931970] rockchip-dp ff970000.edp: Failed to apply PSR -110
[  715.932011] [drm:analogix_dp_bridge_atomic_enable [analogix_dp]] *ERROR* Failed to disable psr -110
[  716.548933] rockchip-dp ff970000.edp: Failed to apply PSR -110
[  716.548974] [drm:analogix_dp_bridge_atomic_enable [analogix_dp]] *ERROR* Failed to disable psr -110

Indeed, I do have the same messages in dmesg. Do you have reason to suspect they're related to the trackpad jumpiness?

Just had a feeling that if something was coming up that often in dmesg for everyone that it would have showed up somewhere else in the forum, as a false positive if nothing else, but I haven't found any reference to it (besides the one you just posted).

PSR  stands for "panel self refresh"--it seems the system is complaining about a graphics issue in the analogix bridge driver--probably has nothing to do with trackpad issues. ..    Have you tried playing around with the trackpad settings?

Yes, turning acceleration completely off somewhat mitigates the issue since it thinks you're moving the pointer very quickly, but then acceleration is off and it's a pain to use (and still isn't that much better).  I like the trackpad settings at the defaults, since there are certain situations where the issue does not occur at all (see my other post with more details - https://forum.pine64.org/showthread.php?tid=10339).

Re: the display error, it's also interesting to note that I'm having graphical issues when trying different OSs.