How to increase video memory?

[Lionel]

Hello,

I'm trying to test dual screen via Proxmox.
I succeded (with the help of this forum!) to install the server, one VM (Debian), and to configure SPICE on my host and my guest machines (with QXL drivers).

I can see my two screens which is amazing... But the display is laggy. I guess the default amount of video memory is too low for two monitors !
I found the following link showing that I need at least 64MB of vram : https://www.spice-space.org/multiple-monitors.html

My question is : how exactly can I customize the amount of video memory for my VM? Is there a setting somewhere in Proxmox VE web interface? Or is there a file to edit inside my VM?

Thanks in advance!

Lionel

 

[dcsapak]

this is not implemented via our config (see https://bugzilla.proxmox.com/show_bug.cgi?id=1952 )
but i am working on that

 

[Lionel]

Hey,

It would be amazing since actually the dual monitor option is working... But the display is quite laggy

Another option would be to automatically increase video memory when we chose "2 monitors" or more from the Display setting...

One question : you mention that this is not implemented via your config... But is there any way to do this change manually (via the terminal, by editing a file) ?

It's not a big deal to edit a conf file, if I know which file has to be edited, and its current path

Have a nice day !

Lionel

 

[dcsapak]

Another option would be to automatically increase video memory when we chose "2 monitors" or more from the Display setting...

we do this already (probably not high enough), but in the future you are able to set the memory manually

One question : you mention that this is not implemented via your config... But is there any way to do this change manually (via the terminal, by editing a file) ?

you would have to add the device(s) manually to the qemu commandline with the 'args' parameter

for details see: 'man qm' and 'man qemu-system-x86_64'