Black screen except for cursor on external monitor
External monitor is black, except for the cursor which moves and responds. It appears to be a regression from wlroots 0.14 to wlroots master, because running the sway
system package (depending on system wlroots 0.14.x) doesn't have the issue.
This is with i915+nouveau (nouveau for external monitor), and also setting WLR_DRM_NO_ATOMIC=1
fixes the issue.
I'm afraid I am away from a device with which I can test at the moment - as soon as I can, I'll try it again and grab a debug log. I thought I'd file this issue before I forget about it.