Hello Haines,

Has stated in other replies, the issues might either be of hardware of software
in nature. If your software stack is problematic, the reasonable path would be
to investigate what aisleriot has for requirements. As it stand, aisleriot is
part of the gnome suite and thus depends on GTK3. Maybe something in the
framework changed that does not support your system anymore. I also run
aisleriot from time to time, and never noticed the cards being greyed out...
Could it be that you have an ancient graphic card, or that you haven't installed
the proper firmwares or drivers to support your hardware?

         Ludovic

On Tue, 10 Aug 2021, Haines Brown wrote:

>The problem I'm facing is indeed petty, but I hope that help in my
>trying to resolve it will be more widely useful.
>
>To take a break from work and to refresh the mind I run a copy of
>Klondike from aisleriot. Suddenly for no apparently reason it
>ceased to function properly. When I click on a card it greys out as it
>shoud but I cannot then move it with the mouse. The greyed out card
>stays in place.
>
>If the problem were with the X system I assume it would show up
>elsewhere. I reinstalled aisle-riot. It affects all aisleriot games
>that require dragging, and so apparently it is a gtk problem. How does
>one troubleshoot a misbehaving graphical application?
>
>I played with gdb without really knowing what I was doing.
>
>--
>Haines Brown