My switch is indeed better behaving - it emulates some weird monitor on inactive ports. Before that I was using display dummies to avoid resolution resets but I never had an issue with keyboard focus getting lost. May be it is because of Windows 7 where the QXL window just stays on "Starting Window" screen and is not used by the OS in any way. I never used a Widnows 10 VM and can't compare. Does it display anything in the QXL window?
On Sun, Mar 19, 2017 at 3:47 PM, Patrick O'Callaghan <p...@usb.ve> wrote: > > On 19 March 2017 at 20:32, Nick S <nick.kv...@gmail.com> wrote: > >> Monitor source selection menu is the cheapest option and also the least >> convenient. The most convenient option is a KVM switch but then you would >> have to deal with passing one of its USB ports to the VM while keeping the >> other one on host and a good KVM will cost you several hundred bucks. The >> way I am using it: >> 1) Cheap HDMI switcher (i.e. something like this: >> https://www.amazon.com/TBS%C2%AE2083-Intelligent-Switc >> her-Adapter-Splitter/product-reviews/B00M6I8K2E). It allows me to switch >> the cards without fumbling with the monitor menu. >> > > This is the one I have: https://www.amazon.co. > uk/gp/product/B019MJM2ZU/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 > Very cheap and really designed for TVs. > > 2) I keep the emulated VGA as a second adapter on my virtual machines. For >> Windows 7 it keeps a window on the desktop that I can use to grab or >> release focus for keyboard and mouse. This way I don't have to deal with >> any USB passthrough - only the GPU is passed to the VM. >> > > That's more or less what I do as well. However when I toggle the HDMI > switch from the 2nd GPU (Windows) to the 1st (Linux), Windows rings a > notification saying it has lost the screen, I presume because the switch > powered down that port. (This doesn't happen if I just connect both GPUs > directly to the monitor via HDMI and DVI inputs). Note that toggling the > switch back pings again and the screen is restored, but now the mouse and > KB are trapped in the Linux desktop window and can't be moved across. > Possibly your switch is better behaved and doesn't power down the port, in > which case that would solve the problem for me. > > poc > >
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