I have several f7 machines that I vnc into from windows and linux.
I've noticed all qt 3.3 applications, run through vnc, complain about :
"Xlib: extension "XInputExtension" missing on display ":n.0".
Failed to get list of devices
This is mostly an annoyance but it is written to stderr. Some of my
logging captures stderr and it is polluting things a bit.
A couple external Qt applications (not from Fedora or RedHat) popup a
message on this error, and the apps crash if the popup is not closed in
a certain sequence...with a stack tracing into a qt-mt.so deadlock.