Dual monitor test on live usb

Dear all
I tested Fedora 43 from a live USB on my PC. I have two screens, one iiyama and one dell. When I boot, I can see the bios options on the iiyama monitor, with low light, then the fedora logo but when Fedora starts, everything is now on the Dell monitor. The iiyama monitor stays black but it’s detected: when I go to the display options I can see it. And there is one configuration of cloned monitor where it shows the desktop but with constant (and painful) blinking. How could I fix this? I am now on Ubuntu 22.04 and the dualmonitor works well.
Thanks
Didier

Fedora packages what upstream provides, so generally works the same as other distros using the same kernel versions. The main exception is when proprietary drivers are needed. That can be Nvidia drivers that Fedora isn’t allowed to package or linux drivers for very new hardware that have not yet been accepted by kernel.org.

The Live USB is not a reliable test environment I’ve been using linux on dual monitor systems for decades. With dual monitor systems I disconnect one monitor to install Fedora. In the past I have had some issues with the boot screen moving back and forth between the two monitors. F43 works for me on 2 dual-monitor systems with Intel graphics.

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Thanks for your answer. Then I have to test with a full insall.