Trackpad woes

[joshw]

Hey all,

Just got my PBP today and loving it. Mine is part of the batch that was post resolution of some QA issues.
Still experiencing some jittery touchpad issues. Was wondering if this batch needs the firmware update? Or is that an old update only for the Debian install, and not the new Manjaro install?

EDIT: to clarify, the behavior can best be described as, when the touchpad works, it works great. but when you switch from typing to using the touchpad, there is an initial lag from when you first put your finger on the touchpad to when the pointer on the screen moves. Then it seems to overcompensate, and the pointer jumps all the way to the edge of the screen.

Many thanks,
B

I have the same experience. There is an initial lag in recognizing the touch, then a "jump". I also experience this jump sometimes while in the middle of a touch gesture. The pointer suddenly crosses the entire screen to lodge on the opposite border.

I received mine yesterday and unfortunately I noticed these same issues straight away. The "jump" halfway across the screen randomly and not being able to make minor mouse movements is a bit frustrating. Everything else so far has been quite nice.

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