Comment # 22 on bug 1205452 from Fritz Hudnut

(In reply to Stefan Seyfried from comment #21)
> Things I have seen in the past:
> Updates of font packages cause the X server to basically stall for quite
> some time, especially (this is a guess) on older/slower CPUs and graphics
> adapters.
> 
> This lead to display "hangs" of about a minute without content updates,
> don't remember if the mouse pointer still moved. A text console login
> showed, that the xorg processes were consuming lots of CPU.
> AFAIR the update process continued in the background, it was just no
> progress visible on the desktop.
> 
> 
> So especially if this is an "older" machine where this happens, just waiting
> longer for it to finish would be my first option.
> In order to debug this, I would have a ready-logged-in text console handy
> and in case the GUI hangs would check if the last installed packages (should
> be visible in journal or with "rpm -qa --last|head" are font packages indeed.
> 
> I'm not sure who is "to blame" for this issue, if it is the X server
> dynamically reloading the changed fonts or the graphics toolkits, but that's
> a secondary question, once you find out it is actually the same problem I
> was seeing.

@maurizio:

OK, well, this is Leap 15.5 XFCE, whether the XFCE is relevant or not is
another story . . . .  I have several rolling tumbleweed based systems and no
issues there on the same machine . . . . '12 cMP i7 4core

@stefan s:

Yes, in the long history of using XFCE, back to approx '07 or earlier, there
has been issues of GUI "freezing" . . . in PPC based systems, etc.  This is
longer than 1 minute AND can not get to a TTY from with the freeze . . . .