Arch Linux

burny02

Member

Registered: 2021-07-01

Posts: 129

VM color depth

Hi

I’ve got an arch linux guest running from proxmox with virtio driver. I’ve been trying to reduce bandwidth based on some recommendations of reducing resolution, frame rate, colour depth.

I’ve added some custom resolutions and frame rates, these appear to have improved things somewhat, however I was never able to get the colour depth to drop from the default 24

I tried custom xorg confs - They were being applied but depth remained 24 and kernel boot parameter - Which also applied but not the depth
I also tried the depreciated remote-viewer connection file with color-depth=16

I’m really trying to optimise for slow WAN connections during travelling

Thanks in advance

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 75,086

Re: VM color depth

I’ve added some custom resolutions and frame rates, these appear to have improved things somewhat, however I was never able to get the colour depth to drop from the default 24

Tried what and what does the resulting X11 log look like?
Also how do you start the server?
https://man.archlinux.org/man/xorg.conf.5#DefaultDepth

I however doubt that this will help you much - most clients will just unconditionally push 24/32 bit images onto the server and/or fail altogether at lower depths and if you're not running remote X11 sessions but

remote-viewer is a simple remote display client. The supported protocols are SPICE and VNC

this is completely irrelevant (vnc might or not provide better compression for lower depths, but eg. dithering could easily completely spoil that and blow up the signal A LOT)
You're looking for the VNC compression and depth settings.

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