Since the bug was filed for 15.04, whereas I reported it for 15.10, I have to add that it was present for me on 15.04 as well. Only I cannot confirm whether switching to DVI helps.
Also, concerning the fact that I don't get log in screen - it seems to be the same for the original reporter. He manually kills user processes from a virtual console to get back a login screen.
And, if that's important, my display is Dell UltraSharp 2408WFP.
Since the bug was filed for 15.04, whereas I reported it for 15.10, I have to add that it was present for me on 15.04 as well. Only I cannot confirm whether switching to DVI helps.
Also, concerning the fact that I don't get log in screen - it seems to be the same for the original reporter. He manually kills user processes from a virtual console to get back a login screen.
And, if that's important, my display is Dell UltraSharp 2408WFP.