Fbdev=1 with monitors on differents ports type

arch 6.6.2-zen1-1-zen
nvidia 545.29.06 on a GTX1060
systemd 255rc3

got a 32" on hdmi and a 27" on DVI:

  • with both monitors connected and nvidia_drm.fbdev=1 will return a black screen. (worked 1 time out of maybe 200times)
  • with only one monitor and nvidia_drm.fbdev=1, works.

dmesg: [ 0.000000] microcode: updated early: 0x19 -> 0x28, date = 2019-11-12[ 0 - Pastebin.com
journal: nov 27 09:19:06 blackdot kernel: microcode: updated early: 0x19 -> 0x28, date = - Pastebin.com