Try the following:
lxpanel>PCManFM>Edit>Preferences>General
Uncheck first box under 'Behavior' if you don't like single click.
I have been using a double-click action on the mouse for well over twenty years (Amiga, Mac, Wintendo, SunOS, Linux (KDE and Gnome).
Knoppix seems to want a single-click to open files and icons in the LXDE file manager.
I googled and tried to find the setting in preferences but cannot. I did see this very old thread - http://knoppix.net/forum/threads/457...on-desktop-etc. - but the solution doesn't seem to be relevant any more.
Any help?
Try the following:
lxpanel>PCManFM>Edit>Preferences>General
Uncheck first box under 'Behavior' if you don't like single click.
ALLEN BRADLEY 1494V-DS400 SER A DISCONNECT SWITCH 3PH 400AMP 600VAC STK 5039
$1220.00
Intel - Core i9-12900K Desktop Processor 16 (8P+8E) Cores up to 5.2 GHz Unloc...
$619.99
Intel - Core i7-12700K Desktop Processor 12 (8P+4E) Cores up to 5.0 GHz Unloc...
$419.99
Intel Xeon E5-2697A V4 2.6GHz CPU Processor 16-Core Socket LGA2011 SR2K1
$39.99
Intel Core i5-8500 3 GHz 8 GT/s LGA 1151 Desktop CPU Processor SR3XE
$49.99
AMD Ryzen 9 5950X 16-core 32-thread Desktop Processor
$319.99
Intel - Core i9-14900K 14th Gen 24-Core 32-Thread - 4.4GHz (6.0GHz Turbo) Soc...
$619.99
E5-2697V4 INTEL XOEN SR2JV 18 CORE 2.30 GHz 45M 9.6 GT/s 145W PROCESSOR CPU
$49.99
Intel Core i5-12400 Desktop Processor With HeatSink
$140.00
Intel i7-8700 Coffee Lake 3.2GHz 6-Core Max Turbo 4.6GHz Processor
$48.70