Created attachment 1504247 [details]
The Xorg log from running nouveau drivers (bad signal)
Description of problem:
The nouveau driver refuses to talk to my LG OLED55B6P in X11. Initially installed the fedora 29 workstation live image, and nouveau was speaking wayland just fine at the 3840x2160 full resolution. Switched to a login session with no wayland support, and the LG TV reports "invalid signal" and refuses to talk.
Installed the rpmfusion nvidia binary drivers and X11 works fine.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Invalid signal complaint from TV
UHD resolution screen
I'll attach some Xorg log files
Created attachment 1504248 [details]
The Xorg log from running nvidia driver (working fine)
This also happens in fedora 30
Created attachment 1566872 [details]
edid-decode of monitor
I've booted the live CD on this system to find out exactly what wayland does to make the display show up and discovered that it decided to use the wacky 4096x2160@30HZ mode (not what I expected).
This is edid-decode of /sys/class/drm/card0-HDMI-A-1/edid
Created attachment 1566884 [details]
dmesg from boot of live cd using wayland
This shows the nouveau initialization during boot. After booting, xrandr gives just this:
Screen 0: minimum 320 x 200, current 4096 x 2160, maximum 8192 x 8192
XWAYLAND0 connected 4096x2160+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm
Running the same system with the nvidia binary drivers, X selects the correct native 3840x2160@60HZ resolution:
Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 16384 x 16384
DVI-I-0 disconnected primary (normal left inverted right x axis y axis)
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm
3840x2160 60.00*+ 59.94 29.97 25.00 23.98
4096x2160 59.94 29.97 25.00 24.00 23.98
1920x1080 60.00 59.94 29.97 23.98 60.05 60.00
640x480 59.95 59.94 59.93
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 disconnected (normal left inverted right x axis y axis)
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