That sounds like it may be a GIMP input devices configuration issue.
Go into the menu: Edit -> Input Devices
You will see all available input devices in the left pane. You can configure
the behaviour of
each of them in the right pane after selecting the respective device on the
left. The mode of
any pointing device can be set to any of {Disabled, Screen, Window}, and below
that you can set
various parameters for each device. What you can configure depends on the kind
of device.
There is a quirk to this for some input devices: you may have to select and
apply the
configuration changes with the input device that they are meant for itself.
Don't ask why it is
like that, but I have found from experience that some changes for other devices
that I am making
do not stick when I select and "Save" them with the mouse. YMMV - so if the
"straightforward"
approach doesn't work, try playing with this.
Kind regards,
Helmut.
On 16/07/2021 22:06, Andrew Packer wrote:
> I'm stuck on a problem with the GIMP and have not been able to find any
> solution, or even any
> mention of the problem, online.
>
> I've never encountered anything like it before adopting my current computing
> rig: Dell XPS-13
> "9300" dual-booting Win10 and Linux Mint 20 Cinnamon, kernel
> 5.8.0-59-generic, Cinnamon 4.6.7,
> running an LG 27" 4K-res monitor (problem is similar with ASUS monitors and
> with no external
> monitor at all). When connected to an external monitor, which is most of the
> time, I use an
> Alogic VPLUCSD3O hub. My GIMP version is 2.10.18.
>
> When I try to do anything in the GIMP involving selection, including placing
> a text box, one of
> two things happens:
>
> If I'm using my favourite trackball (Logitech M570 or Logitech MX Ergo), I
> cannot do anything
> involving selection. When I choose the tool, a cursor appears, and I can
> move it around, but
> clicking and dragging does nothing at all.
>
> If I'm using the trackpad on the XPS-13, the same cursor appears, but a
> second, 'real' cursor
> (that places the start of the selection or text box) is most of a screen's
> height above it. I
> can ignore the first cursor, except that if I move it down far enough, it
> changes into my usual
> Mint cursor and the 'real' cursor vanishes, so it's difficult to get at some
> parts of the image.
>
> My cursor is not standard, but I've tried others and the behaviour is the
> same.
>
> Any clues as to what's wrong and how I might investigate and fix it?
>
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