https://bugs.freedesktop.org/show_bug.cgi?id=100436
Bug ID: 100436
Summary: Pointer jumps when using the rmi4 driver for precision
touchpads
Product: Wayland
Version: 1.5.0
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: libinput
Assignee: [email protected]
Reporter: [email protected]
Created attachment 130512
--> https://bugs.freedesktop.org/attachment.cgi?id=130512&action=edit
Noticeable jumps when drawing diagonal line
Versions 1.5 and higher seem to have introduced jumps in the pointer motion for
data being reported using the RMI4 driver. On example is when moving in a
descending diagonal line from right to left the pointer will jump down and then
back into position. It maybe that the new acceleration code is amplifying the
motion. Here is the link to the kernel mailing list discussing this issue.
https://marc.info/?l=linux-kernel&m=148998603125837&w=2
There is probably a kernel component which is contributing to this. But, since
the jumps are much more noticeable on newer versions of libinput I thought it
was worth looking into on the libinput side.
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