I will look into the piwall thing, it kind of leads me back to what I tired to do starting out with using ffmpeg to capture the whole display and send it, but had a lot of issues actually getting that to work, after looking at countless examples that work for everyone else kind of thing . Then I stumbled on the SPICE driver with multiple monitors and got closer but then the road block I was talking about before.
I was also hoping to have the display processing mostly handled by the VM server and not have to client CPU overhead with a capture running, going back I did get it to work have to run a encode per display and get decent quality but it adds about 33% CPU use on the VM just sitting there.
I dont know if it is possible to decide which display it chooses when you use the -f parameter on remote-viewer or if it would do what I wanted if the machine I was running it on had 2 screens anyway haven't actually tried that yet.
On Tue, Oct 23, 2018 at 5:59 AM Victor Toso <victortoso@xxxxxxxxxx> wrote:
Hi,
On Mon, Oct 22, 2018 at 10:48:06AM -0400, Jarrid Graham wrote:
> Hi,
> What I am trying to accomplish is using multiple raspberry pi
> units , one for each monitor of a multi monitor windows VM. I
> have read there is an option to allow more than one spice
> connection per VM
You mean https://www.spice-space.org/multiple-clients.html ?
> but I was hoping to be able to map monitors say on the first pi
> 1:1 and on the second 1:2 kind of thing but it knows there is
> no second monitor on the pi and says my mappings are invalid
> and ignores them.
Even if you tweak that, you would be receiving data from all
displays, I think.
> I have tried many things to make a second display on the pi to
> fool the software but that doesn't seem to work either.
It wasn't design with this kind of usage in mind
> I have tried to search for information on this but have had
> little luck. I know I am using an older versions on virt-viewer
> package 4.0 I think due to trying to compile newer versions of
> spice-gtk seem to have issues with a newer libssl I think.
>
> I have been banging around on this a bit and maybe I am looking
> at this wrong, I am not really to worried input as these are
> only for display.
You could have a client to connect on the host and having this
client to split the data to all rpi instead. You could even
consider playing with video walls, splitting one 4k display in 4
full-hd ones, etc.
Nothing like this is implemented but lots of work is already done
by GStreamer, in case you want to play with it.
Cheers,
Victor
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