KVM Model:
HDMI 2.1 KVM, Single Monitor, 4 computer
USB Interface (5-gigabit or 10-gigbit):
10 Gbit
Problem:
First off, best KVM I’ve ever used, and I’ve used them for 20 years. Well worth the money.
Also, apologies if these have been asked already, I did look and didn’t see anything about these questions (but I might be blind).
So, I have 2 different “issues”.
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I have a 4 port hub hooked to the USB 3.2 (Non HID) switcher. There’s a webcam and a Logitech Bolt Receiver (for the MX Master mouse, not using HID because then I can use Solaar to control it and do cool config things). Sometimes, when switching between machines, that whole hub just goes dead. It has a power switch per port, toggling those doesn’t fix anything, so that’s not it. Unplugging and replugging the hub itself doesn’t help either. The only thing which fixes it us powering off the KVM and then back on. Now, to be clear, the hub has power when this happens (light is on). It’s almost like the data lines (which are presumably hard switched via a muxer) aren’t always muxed correctly on switch. Feels like a “sometimes firmware doesn’t write the correct bits in the correct order” type of race condition.
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Is it possible to have the KVM tell the PC that the monitor is connected/on when it isn’t? My scenario is that I use a TV as a monitor. When I turn it off (or it turns itself off) it is off, so the PC sees it as off. On my desktop, this isn’t an issue because there’s one thing connected to it, so it just always uses that display - on or off. But, on my laptop, when the screen goes off, it flips to using the internal screen, which means that, after I power the screen on and wiggle the mouse, the lock screen is only displayed on the laptop’s internal screen - even though both are active. Using the same setup with my previous KVM, I didn’t have that issue - but my previous KVM also didn’t do FreeSync, and I expect that these are related. That is, in order for FreeSync to work, you need no EDID emulation and transparent passthrough. But, that transparency means that it will also see the monitor turn off. So, I fully expect the answer here is “that’s the engineering tradeoff”, but I figured I’d ask the question.
Both machines are Ubuntu 22.04, BTW.
I also suppose that, rather than hardware fakery, perhaps there’s some lock screen config option to “display lock screen on all monitors”, but I couldn’t find it.
FWIW, once unlocked, the monitor setup immediately reverts back to the setup I configured (that is, internal screen off, external TV monitor as primary / single active monitor) - it’s just the lock screen being stupid.
Thanks in advance.
Other Notes:
Be excellent to each other…
… and party on, dudes.