Comment # 21 on bug 1200983 from Michael Hirmke

(In reply to Takashi Iwai from comment #20)
> (In reply to Michael Hirmke from comment #19)
> > (In reply to Takashi Iwai from comment #18)
> > > (In reply to Michael Hirmke from comment #17)
> > > > All USB keyboards and mice are affected.
> > > 
> > > Do I understand correctly that, when you login via sddm, all USB keyboards
> > > and mouses don't work, no matter how many keyboards / mouses are connected?
> > > And, if you reconnect one of them, do they all start working?  Or it's only
> > > the reconnected one?
> > 
> > No, there is alway only one mouse and one keyboard connected, but I tried 3
> > different keyboards and 2 different mice - and all of them show the same
> > behaviour.
> 
> So, if you connect two USB keyboards, both are gone?  Also, it happens no
> matter which port is used?  I guess both yes, but such a thing is worth to
> test.

It is not possible to connect more than one keyboard and mouse directly,
because this machine only has two thunderbolt connectors and my thunderbolt
dock also has only two ports remaining.
But I have to test, if the problem exists in both cases - directly connected or
connected via the thunderbolt box.