On Thursday 14 Apr 2016 11:21:39 Yuri K. Shatroff wrote:
> 14.04.2016 10:43, J. Roeleveld wrote:
> > On Thursday, April 14, 2016 10:33:10 AM Yuri K. Shatroff wrote:
> >> 14.04.2016 00:49, Dale wrote:
> >>> Yuri K. Shatroff wrote:
> >> Hi Dale,
> >> 
> >>> I'm not sure on where you got the black screen.  If it is when X
> >>> started, did you switch to sddm or some other compatible display
> >>> manager?  The old kdm isn't supported and from what I read, doesn't
> >>> work.  That may explain the black screen.
> >> 
> >> Sddm worked as expected, not to mention its veeery slow interface (for
> >> that nvidia drivers can be blamed, but whatever). The black screen
> >> appeared after logging in.
> > 
> > Slow interface?
> > It works quite well on my laptop. Did you add the "sddm" user to the
> > "video" group as mentioned in the upgrade guide?
> 
> No I didn't because I had a much more blatant issue with the whole 
> desktop than the 'SDDM display issues', I just didn't get to that. 
> Thanks for pointing it out, next time I'll give it a try.

I don't have NVidia or use the full plasma desktop environment on my laptop (I 
use enlightenment instead with a Radeon card). However, I have not added sddm 
to the video group and have not noticed anything undue in my logs.  I have 
however noticed that sddm is slightly slower than kdm.

Why is the video group needed?  What does it do?

-- 
Regards,
Mick