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Re:Ask HN: Can you recommend an “instant-switch” Monitor? Do... by balefrost on Monday December 19, 2022 @09:06AM (#34052145)
If you just need "switch using keyboard", not necessarily "switch using shell", some KVM switches allow input switching using keypresses. For mine, it's <SROLLLOCK> <SCROLLOCK> <1-4> <ENTER>, though I think that can be customized.
Re:Ask HN: Can you recommend an “instant-switch” Monitor? Do... by alanbernstein on Monday December 19, 2022 @09:38AM (#34052511)
Well, what I actually want to do is switch via my DIY macropad. My keyboard switch goes through that, without relying on any of the main computers. I had a cheap HDMI switch that worked the same way, but it just stopped working reliably after a month.

I sometimes want independent control of the keyboard switch and the monitor switch, so I'm not sure if a KVM is the best option for me.