13:05 <Darkmatter66> Hi narmstrong I'm trying to boot the kernel from 150balbes

13:05 <Darkmatter66> narmstrong, https://github.com/150balbes/Amlogic_s905-kernel

13:06 <Darkmatter66> narmstrong, beacuase it contains out of tree patches, but I'm not getting output to HDMI

13:06 <Darkmatter66> narmstrong, the drm driver is loaded but no output on the screen

13:07 <Darkmatter66> narmstrong, dmesg log: https://0x0.st/zPOf.json

13:36 <Darkmatter66> narmstrong, modetest output http://0x0.st/zPOy.txt

14:02 <chewitt> Darkmatter66: put "video=HDMI-A-1:1920x1080@60" in boot params

14:03 <chewitt> see if it makes a difference

14:08 <Darkmatter66> chewitt, you pointed me in the right direction, I had "video=1920x1080@60" in the kernel command line, removing them solved the problem

14:09 <Darkmatter66> chewitt, only now the font is very small maybe I need to force the mode you mentioned to have a big font

14:09 <chewitt> nope

14:09 <chewitt> welcome to 4k screens

14:10 <chewitt> if you put "video=HDMI-A-1:1920x1080@60" in boot params it will cap HDMI at 1080p

14:10 <chewitt> so the text is normal size again .. but no 4k loveliness

14:11 <chewitt> (not that 4k is fully working yet)

14:12 <Darkmatter66> chewitt, yes I know that it will limit the resolution but at least i can read :)

14:14 <Darkmatter66> chewitt, do you know how I can force the mode with modetest without rebooting

14:14 <Darkmatter66> I tried "modetest -M meson -s 33:1920x1080-60" but I'm getting the colorful test pattern

14:17 <chewitt> that's what it does .. mode .. test

14:17 <chewitt> i'm not sure there's an equivalent to "modetest" (on Intel kit)

14:18 <chewitt> modeset ^

14:19 <Darkmatter66> I think I'm just missing the format parameter so it should be something like this "modetest -M meson -s 33:1920x1080-60@format" but I don't know what are the supported formats by drm_meson