[vfio-users] alternative to input passthrough

[Erik Gustavsson]

Hi.

For mouse input in games, did you eable "use relative mouse movements" 
in the server config, and lock the cursor to the windows screen with 
scroll-lock? That worked perfectly for me in first-person games.

/Erik

On 08/16/2015 07:13 AM, Will Marler wrote:
> Hey Jose,
>
> In my experience, Synergy is more than good enough for a 1st-person 
> shooter as far as latency goes. I ran into other problem. It seems 
> like when a game takes over full-screen in Windows, the mapping of one 
> unit of movement of the mouse to one unit of movement on the screen 
> becomes ... funky. For me, Skyrim was the best example. In Skyrim, one 
> fractional physical move of my mouse moved the cursor 150 or 200 
> pixels on the screen. This made the game unplayable. I've experienced 
> the same thing in Bioshock Infinite and Metro 2033 to varying degrees. 
> For those latter 2 games I was able to get the games playable enough 
> using mouse sensitivity settings (in Windows and in the games 
> themselves), but for Skyrim I wasn't (granted, I didn't try as hard 
> with Skyrim).
>
> Another problem I've had is that Synergy seems to be bounded by a box, 
> when playing a full screen game. What I mean by that is that when I 
> use the mouse to turn the character, it will only go so far. As if the 
> character can only turn his head so far to the left. This happens both 
> left, right, up, and down. It's not a dealbreaker when playing the 
> single-player FPS's that I mentioned, but I imagine it would be if you 
> were playing something competitively multiplayer.
>
> The third problem I had was when I was using Windows 7. For some 
> reason, Windows 7 would decided it couldn't boot, and go into a 
> recovery mode. This recovery mode would require a keypress or mouse 
> clicks to exit; once exited the VM would boot just fine. 
> Unfortunately, Synergy wouldn't be running at this stage, so passing 
> through a USB mouse directly was the only option. Windows 10 has yet 
> to give me this problem.
>
> Passing through a USB mouse is very easy using virt-manager. It can be 
> done on the fly, with a running VM, and it has the advantage of 
> Windows detecting it (I have a gaming mouse with a number of buttons 
> and settings and Windows picks all this up when the mouse is passed 
> through directly, but doesn't when Synergy is involved). The downside, 
> of course, is that once you click "apply," you no longer have use of 
> that mouse in your host : ). For that, I have a 2nd mouse, whose 
> purpose is simply to interact with the host, if that is necessary, 
> while the guest is running. I still am using Synergy for the Keyboard.
>
> Will
>
> On Sat, Aug 15, 2015 at 9:45 PM, Jose Ramon Muñoz Pekkarinen 
> <koalinux at gmail.com <mailto:koalinux at gmail.com>> wrote:
>
>     Hi Andrew,
>
>         Thanks for your answer! I didn't know about the arch wiki you
>     pointed. It's yet another great resource from the arch community.
>
>          I have a couple of questions though. Is synergy responsive
>     enough to play something time demanding, lets say a shooter? Is
>     there any way to avoid using the bridged mode networking?
>
>          Thanks!
>
>          José.
>     ------------------------------------------------------------------------
>     From: Andrew Morgan <mailto:andrew.morgan4453 at gmail.com>
>     Sent: ‎15/‎08/‎2015 14:27
>     To: vfio-users at redhat.com <mailto:vfio-users at redhat.com>
>     Subject: Re: [vfio-users] alternative to input passthrough
>
>
>     -----BEGIN PGP SIGNED MESSAGE-----
>     Hash: SHA512
>
>     Check out Synergy, it allows control of the mouse and keyboard
>     input without having to passthrough the devices. Guide here:
>     https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#Control_VM_via_Synergy
>
>     - -------
>
>             Hi,
>
>             I'm using vga passthrough so much nowadays, and I wonder
>     if there is any
>         better option than passing through the usb devices to the
>     machine, like using
>         vnc, or the brand new virtio keyboard and mouse coming in 2.4
>     version.
>
>             The setup in my case is working quite well but from time
>     to time, the vm
>         hangs without any option to go back to the host, and I'd like
>     to improve this
>         at some point.
>
>             Best regards.
>
>             José.
>
>
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