F34 Live KDE Hangs on Boot

[Christopher Ross]

As F32 is going end-of-life, and having skipped F33 because of apparent 
compatibility issues with the Fedora KDE Spin, I tried a clean install 
of Fedora 34.

Booting from a USB of /Fedora-KDE-Live-x86_64-34-1.2.iso/ my computer 
just hangs at the point it tries to start the desktop. I get a black 
screen with a mouse cursor. Moving the mouse does not move the cursor, 
the keyboard is unresponsive, the only way out I have found is to power 
cycle the machine. I tried several times before giving up, settling for 
upgrading my existing F32 installation with DNF

    dnf system-upgrade download --releasever=34 --allowerasing
    dnf system-upgrade reboot


That has worked as expected, although the filesystem is still ext4 of 
course, not the new BTRFS.

Regards,
Chris R.