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neutrinolabs / xrdp

xrdp: an open source RDP server
http://www.xrdp.org/
Apache License 2.0
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Lossy compression of screen? #817

Open monken opened 7 years ago

monken commented 7 years ago

It seems like currently, only lossless compression is supported. I have set up a Linux VM and connect through XRDP from a Windows machine. In parallel, I also use Guacamole (guac-dev.org) to connect to the same host. I usually get better performance out of Guacamole when I'm on a high-latency link (cross atlantic). I attribute this to the lossy compression that Guacamole is using as opposed to the lossless compression from xrdp. Is it possible to tweak the compression algorithm to reduce bandwidth and therefore improve performance over high-latency/low-bandwidth links?

johnarnold commented 7 years ago

Are you using latest version of Xorg driver (0.2.2) ? Recently there were big improvements with tile-based refresh that really improved performance for me over WAN links, VPNs etc.

monken commented 7 years ago

Yes, that update definitely helped. And I also would like to mention that I prefer the lossless compression most days out of the week. But the few time where I am on a slow link, it becomes almost impossible to work with the remote desktop.

metalefty commented 7 years ago

Need to implement RemoteFX Adaptive Graphics or Progressive RemoteFX Maybe they're part of MS-RDPEGFX: https://msdn.microsoft.com/en-us/library/hh554846.aspx

shadoxx commented 7 years ago

+1 for this feature request. Implementing the MS-RDPEGFX specification into XRDP would be a huge step forward. Microsoft just updated the specification today: https://winprotocoldoc.blob.core.windows.net/productionwindowsarchives/MS-RDPEGFX/[MS-RDPEGFX]-170915-diff.pdf

matt335672 commented 9 months ago

Over a WAN, see also #2910. This doesn't implement lossy compression, but it does improve throughput.