Question Win11 does not recognize the monitor with a HMDI/DP cable

[bluediver]

I have a clean Windows 11 installation on my PC that does not recognize my monitor, which is connected using a DisplayPort/HDMI cable (DisplayPort on the mainboard, HDMI on the monitor).

What I tried:

• the monitor using the cable works for a Windows 10 installation and for an Ubuntu Live System (however, Ubuntu receives a strange default resolution, which I can adjust manually). This means, the hardware generally works.
• if I boot, I see the startup screen (I also see the BIOS if I enter it). As soon as the Windows startup screen starts, the monitor becomes black
• If I connect monitors using DisplayPort cable (DisplayPort connectors on both sides), Windows 11 immediately recognizes this and shows the screen. If I plug any monitor with the original DP/HDMI cable, the monitor remains black for Windows 11. This means, it's really the cable and not the monitor.

Setup:

• MSI B350M MORTAR mainboard, AMD Ryzen 5 2400G (with integrated Radeon Vega Graphics), 16 GB RAM. The BIOS has the most recent update available from MSI (7A37v1O7).
• A clean Windows 11 installation with the latest drivers from the MSI website (AMD Chipset Driver 5.11.02.217, AMD Graphics Drivers 22.40.46, Realtek PCI-E Ethernet Drivers 10.68.815.2023)

Since the monitor works in BIOS and for other OS installations, I suppose this is a software/driver bug in Windows 11. I tried different settings in Windows and in the AMD driver software but I couldn't find anything useful. Any ideas how I can fix the bug in my Windows 11 installation?

PS: Unfortunately, I can't solve this on the hardware side. I have a complex setup of different monitors that only works if I connect the DisplayPort of the PC to the HDMI of the monitor.

 

[SkyNetRising]

PS: Unfortunately, I can't solve this on the hardware side. I have a complex setup of different monitors that only works if I connect the DisplayPort of the PC to the HDMI of the monitor.

If you have multiple screens connected, then windows desktop is probably being displayed on the other screen.

It is preferable to use video cables without any signal conversion in them.
DP-DP cable and HDMI-HDMI cable, HDMI-DVI cable is also Ok. There's no signal conversion in those.

DP-HDMI - requires signal conversion.

What model screens do you have connected?
What are available video inputs on those screens?

 

[bluediver]

It is preferable to use video cables without any signal conversion in them.
DP-DP cable and HDMI-HDMI cable, HDMI-DVI cable is also Ok. There's no signal conversion in those.

Thank you for this information. The mainboard also has a DVI connector. Connecting the monitor through a DVI-HDMI cable works. This is a working solution.

If you have multiple screens connected, then windows desktop is probably being displayed on the other screen.

For installation and testing, I usually connect a single monitor only. For regular use, I'd connect two monitors.

However, it does not make sense to me that Windows 11 cannot recognize a monitor that is recognized by the BIOS and by other operating systems including Windows 10.

 

[SkyNetRising]

However, it does not make sense to me that Windows 11 cannot recognize a monitor that is recognized by the BIOS and by other operating systems including Windows 10.

It most likely is because of the cable and signal conversion in it.
Some resolutions/refresh rates may not be supported by the cable.