On Sun, 10 Oct 2021 08:32:42 -0700
Niranjan Rao <nhr...@gmail.com> wrote:

> I have noticed this behavior only for
> darktable on Ubuntu 20.04. Every now and
> then darktable starts reacting as if I'm
> pressing and holding down my left mouse
> button.

Have you observed the same with other programs
using opencl? I think Gimp could be a
candidate; try to keep it busy for a while and
see if that happens again. If so, my first
guess would be to blame the video driver and/or
the version of the x server. Is there a version
you could update to? Anyway, you may increase
the chances of a sensible answer posting this
question on an ubuntu list.
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