Hey everyone! I'm having a bit of an issue and could really use your help. I have a Gigabyte Geforce RTX 4070 graphics card connected to three monitors, and while they all work perfectly fine in Windows, I can only get two of them to work when I switch to Linux. The system detects all three monitors and claims they're functioning, but I can't get the third one to display anything. My setup includes an AMD Ryzen 9 3900X processor and an MSI x470 Gaming Plus Max motherboard. I've tried this with both Bazzite and Linux Mint, and I've even followed some online suggestions to restart my computer and unplug/replug the monitors, but nothing's worked. Does anyone have any ideas on how to fix this? Thanks a lot!
2 Answers
First off, make sure you have the right drivers installed for your Nvidia card. Nvidia drivers can be quite finicky with Linux. You might want to check if you're using the proprietary Nvidia drivers instead of the open-source ones, as they often work better for multi-monitor setups. Let me know if that helps!
I’ve had some similar issues! Linux Mint isn't always the best choice for multi-monitor setups, especially if your monitors have different resolutions or refresh rates. I found Bazzite much smoother for this kind of configuration since it handles drivers better. Also, HDMI connections can sometimes be tricky due to protocol issues, so that could also factor in.

I did check the driver manager and installed the latest one available. Still no luck getting the third monitor to work.