mulitple drm displays

[devsnek]

Does the drm backend support multiple displays at once? I'm running two mpv processes, one for each display, and passing the --drm-connector to each one. Each process runs fine on its own but if I spawn both at once, only one displays anything.

Whichever process spawns second has this output and never displays anything:

$ mpv ./static1.mp4 --loop --video-rotate=90 --drm-connector=HDMI-A-1
 (+) Video --vid=1 (*) (hevc 1920x1440 30.000fps)
[vo/gpu] VT_GETMODE failed: Inappropriate ioctl for device
[vo/gpu/opengl] Failed to set up VT switcher. Terminal switching will be unavailable.
[vo/gpu] Failed to commit ModeSetting atomic request (-13)
[vo/gpu/opengl] Failed to set CRTC for connector 32: Permission denied
[vo/gpu-next] Can't handle VT release - signal already used
[vo/gpu-next/opengl] Failed to set up VT switcher. Terminal switching will be unavailable.
[vo/gpu-next] Failed to commit ModeSetting atomic request (-13)
[vo/gpu-next/opengl] Failed to set CRTC for connector 32: Permission denied
[vo/sdl] Using opengl
[vo/sdl] Warning: this legacy VO has bad performance. Consider fixing your graphics drivers, or not forcing the sdl VO.
[autorotate] Inserting rotation filter.
VO: [sdl] 1440x1920 yuv420p
V: 00:00:00 / 00:00:03 (14%) Dropped: 1