On Mon, Sep 13, 2021 at 11:44 PM Samuel Sieb <samuel(a)sieb.net> wrote:
>> Now if you move the stylus to all the corners, what range of values do
>> you get?
>
> Samuel: When I move the stylus on the right-hand side of the tablet no
> ABS-X coordinate is reported; only ABS-Y keeps changing. This may be
> the problem, but I do not know how to solve it.
What is the maximum value it gets to? Also, do you mean that there's
only an ABS-Y in the packet? It sounds like either the tablet isn't
reporting correctly or the kernel hid driver is interpreting it
incorrectly. Are there any relevant messages in the journal.
Something I just discovered is an application called "hidviz". It
directly talks to the device over the HID interface and shows what it
finds. Try running it and select the interface for the stylus. Copy
the output from the Descriptor View and then watch the values in the
Device View as you move the stylus around, particularly in the right side.
Thanks, Samuel. I do not have the drawing tablet here where I am now,
but later on I will report the results given by hidviz.
While sliding the stylus horizontally from the left to the right, the
screen cursor moves accordingly, but the right border of the screen is
reached when the stylus is in the middle of the drawing tablet. Maybe,
for some strange reason, my drawing tablet considers there are two
screens and not a single one. How can we test that?
Paul