OK. It's not absolutely certain the problem lies ONLY with SDDM. But since BIOS, Grub and KDE have no problem with Nvidia, it certainly does seem LIKELY the problem is with SDDM. It's not like there hasn't been a long history of issues with SDDM.
-- "Sometimes I sit and think, and sometimes I just sit." -- Courtney Barnett On Fri, Sep 29, 2017, at 04:44, Lisandro Damián Nicanor Pérez Meyer wrote: > On 27 September 2017 at 04:00, MH <haa...@fastmail.net> wrote: > > This bug, previously reported by me, still exists in sddm 0.15.0-1 > > > > Additional information: > > > > The problem (black/blank screen) exhibits only when connected via an A/V > > receiver. Sddm displays normally when attached directly to the TV (4k). > > > > NVidia softare correctly enumerates the A/V device, so the latter must be > > sending correct EDID info. Also, it reports 1080p resolution, which is the > > maximum input resolution for the A/V device. > > > > The problem clearly lies with sddm. > > Why? There is no full evidence of that. > > SDDM might be using something the nVidia card does not supports, that > wouldn't be the first time it happens I'm afraid. The fact that you > see this only with SDDM doesn't means it's SDDM's fault. > > Now if you could reproduce the bug with another video card, specially > with open drivers, that would be another story (or not).
