I have two systems that were recently upgraded from Fedora 26 to 27
using DNF system-upgrade. Both were successfully running a KDE desktop
for several generations previously, including on F26. In both cases,
after the upgrade, starting KDE showed the splash screen and then
a blank screen with only a pointer cursor. The keyboard and mouse
worked but the screen remained blank. Both systems are set to start
in systemd's multi-user mode; KDE is started with the startx command.
Prasad K wrote:
I'm guessing some dependent systemd service did not start
the KDE startup issue. Instead of startx, install a login manager
like KDM or SLIM and enable the system to launch GUI at boot and
then reboot the system and see if the issue gets resolved.
I tried that with the first system, the one which I have already
re-installed, before the reinstall. The result was the same except
that killing the hung system was more painful.
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