On Tue, Feb 16, 2016 at 12:58:56PM +0200, Oleksandr Natalenko wrote: > Ville, Daniel, > > I've just got another monitor and another DVI-HDMI cable, and here what I've > got. > > ===Single Link DVI-D cable with 3 different monitors=== > > Computer DVI ——— DVI-D (Single Link)/HDMI cable ——— HDMI LG 23MP65HQ-P === > not working I presume the above LG screen is what you've called previously "old monitor"? > Computer DVI ——— DVI-D (Single Link)/HDMI cable ——— HDMI LG 23MP67HQ-P === > not working > Computer DVI ——— DVI-D (Single Link)/HDMI cable ——— HDMI LG 23MP55HQ-P === > works! > > ===Dual Link DVI-D cable with monitor that doesn't work with Single Link > cable=== > > Computer DVI ——— DVI-D (Dual Link)/HDMI cable ——— HDMI LG 23MP65HQ-P === > works! Funky. Can you pls grab the debug logs (with the special patches from Ville) for this case? I wonder why suddenly different cable and it works. Also: Is this one of these older-ish screens where you must have a dual-link cable to drive it at full resolution&refresh rate? -Daniel > ===Laptop with HDMI output=== > > Laptop HDMI ——— HDMI/HDMI cable ——— HDMI LG 23MP65HQ-P === works! > > I'd say that single link DVI cables are broken with new kernel, but one of > monitors could work with such a cable. So I have no idea :(. > > Regards, > Oleksandr. > > 15.02.2016 17:42, Daniel Vetter wrote: > >The other downside is that it'll make us non-compliant, which was the > >point of this entire ordeal: HDMI spec forbids us from starting any i2c > >transactions when the hpd isn't signalling a present screen. > > > >So maybe we need to buy one of these broken screens. > > > >Oleksandr, what exact model are you using? And any chance that you could > >test this on some other machine with intel gfx and latest kernel, just to > >make sure this really is some issue with the sink and not with the machine > >itself? And I guess you've tested with some other hdmi sink, and that > >works? -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
