The hardware brochure says "HDMI 2.0 (3840x2160 @ 60Hz), HDCP compliant" on http://hkftp.zotac.com/External/ZBOX/C-series/CI547nano/Brochure/ZBOX-CI547NANO_Brochure.pdf
So the only reasons I can think of for 2560x1440 (which requires only HDMI 1.3) being rejected are: 1. Low quality HDMI cable. Make sure you use a cable that is advertised as supporting 4K. HDMI 1.3 can do 4K at 30Hz and HDMI 2.0 can do 4K at 60Hz. 2. A buggy TV/display returning bad EDID data. That's unlikely but happens occasionally. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1793837 Title: xorg gives low resolution on HDMI port To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1793837/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
