Windows 11 doesn't detect monitor if turned on at boot

[R.C.Anderson]

Got an odd one here... Just upgraded my machine & now using a 7900XTX with Win11.
I'm driving 3x screens, one is connected via HDMI, the others are both via displayport (one of which is daisychained via the other).

When I first boot into Win11, on the login screen, only the HDMI monitor is detected & shown, however if I turn on my DP screen after the login screen appears (or turn it off, then back on again at this point), all 3 screens are detected & show correctly.

I'm gussing the issue is something to do with be daisychaining displayport screens, as in my previous build on Win7 I didn't have the same issue, but the screen that is now daisychained was connected via DVI. Also when I initially installed Win11, I didn't have the screens daisychained & they worked fine.

Is there any known fix for this issue? If it comes to it, I'll move back away from daisychained screens, but due to cable lengths & using screen for both my own PC & my work machine, it would be easier if it worked.

 

[Blackjack Davy]

Maybe related maybe not it seems Windows is not waking up devices that aren't directly connected via motherboard etc case in point USB bluetooth adapter works fine when plugged in but shut down and boot up its no longer recognised. Power is on an led lights up but its simply invisible to windows unplug it plug it back in... it works again. Until shutdown. It used to work fine it'd be recognised at startup but something has changed and I'm blaming a windows update that has changed the way usb devices are polled at startup