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After researching KVMs I also came to the same conclusion that ddc is the solution. My use case is a bit different. I have two Windows machines and a dual moni
by MichaelMug 3y ago
After researching KVMs I also came to the same conclusion that ddc is the solution.
My use case is a bit different. I have two Windows machines and a dual monitor setup. I use NirSoft ControlMyMonitor which has a CLI and a Elgato Stream Deck.
In a normal KVM approach both monitors are showing only one computer. My use case is a bit odd- I want one computer on monitor A and the other on monitor B. I may also want to flip that. I use a portrait and landscape setup. Then I want to be able to switch mouse/keyboard independently of monitor configuration.
Each computer runs the Stream Deck software and the Stream Deck is connected to the USB switch.
- fiddyschmitt 3y agoCool setup. Is it all working nicely with the Stream Deck & associated bindings?
- MichaelMug 3y agoYes it works well. The only issue I found was random disconnects when using a backlit LED keyboard and the stream deck on the same non-powered USB switch. I switched to a powered USB switch and that issue is gone. The switch I'm using is IOgear 2x4 with a USB 5v 2a power brick. https://www.iogear.com/product/GUS402/ https://www.iogear.com/product/GUS402/
- webdevver 3y agowhat does ddc stand for?
- MichaelMug 3y agoApologies. I hate when people do that as well. In addition to the other links posted, ddcutil.org has some more good info: https://www.ddcutil.com/#introduction https://www.ddcutil.com/#introduction
- argsnd 3y agoDisplay data channel
- fiddyschmitt 3y agoDisplay Data Channel... it's the signal that your video card uses to communicate with yours monitors to do things like adjust brightness. https://en.wikipedia.org/wiki/Display_Data_Channel https://en.wikipedia.org/wiki/Display_Data_Channel
- Aardwolf 3y agoDoes there exist any hardware knob that you can put between display and displayport cable to adjust brightness? I hate the fiddly menus in monitors and in linux no ddc utils work for me (some "leds" that should include monitor brightness only has keyboard leds)
- wtallis 3y agoIf you can't control the brightness from Linux when using proper software tools, then it's likely your monitor simply doesn't support the brightness control commands and inserting another device between your GPU and monitor won't achieve anything.
- lloeki 3y ago> your monitor simply doesn't support the brightness control commands Or it does but the state of DDC/CI (and HDMI-CEC) is very sad as implementation is inconsistent and subpar to say the least (from order of commands to timing to subtle difference in required payloads that would make the display reject commands). A dedicated device would cut the GPU out of the equation, but most likely patching ddc tools can be equally fruitful.
- Aardwolf 3y agoI have an Aten KVM switch in-between, maybe that one is doing something wrong, but it's a good KVM switch otherwise imho