Hello, On 06/10/2023 09:47, Patrick Dupre wrote:
I plan to install a KVM for 2 monitors. One machine has a VGA/DVI on the motherboard, and the other one has 2 DP. Both monitors are VGA/DVI/DP I have to replace the VGA out by a DP. What would be the best option: 1) Add a DP video card on the PCIExpress bus (and use the DVI of the motherboard)
If you want to use two different graphics cards (dedicated and on board) at the same time you will likely run into trouble or at least have a difficult setup. It might even start with the on board graphics being automatically disabled when you plug in a dedicated PCIe graphics card. And I would be really surprised if you could find a graphics card with DP and only one output. The only time I would consider more than one graphics adapter at the same time is if you absolutely can not get enough outputs with a single card (more than four monitors).
2) Add a dual port DP/DP (or DP/DVI) video card on the PCIExpress (using none port of the motherboard)
This is the way to go.
3) Add a USB-C port on the PCIExpress and a USB-C -> DP converter (and use the DVI of the motherboard) 4) Add a dual USB-C (on the PCIExpress) and 1 USB-C -> DVI and 1 USB-C -> DP converter.
Those two will not work. USB-C does not magically do display, but also needs some GPU to generate the DP signals to put onto the connector. In notebooks or other fully integrated devices this is quite common, but external USB-C adapter cards usually have a DP input to which you have to connect a DP cable from a separate graphics card (or on board graphics).
The KVM2 could be DP/DP or DP/DVI.
I think it makes sense to go fully DP on all used outputs and also use a KVM-Switch with DP. DVI is a dead end and deprecated for almost ten years now. I guess your monitors do not do more than 1920x1080@60Hz, but if you want to switch to something with a larger resolution in the future, DVI with adapters (since the new monitor will not have DVI inputs) will not work. If you want to use adapters between different port types keep in mind that only DVI to HDMI are bi-directional, everything else (especially DP to DVI) has a fixed signal flow direction and might need external power (for example DVI to DP, if you can even find it).
Best regards, Lukas _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
