Dear Nigra,
On Fri, 26 Apr 2019 18:48:34 -0700, Nigra Truo <nigratruo@gmail.com> wrote:
I'm forced to work with some extreme bandwith restrictions and was looking into using more compression and/or the Modem / ISDN connection setting. (I'm down to old time modem speeds, 128 kbit or less) So far I could not find any documentation that shows what these really do. I normally use the ADSL one, which works. The Modem and ISDN setting seems broken (and has been for as long as I rememeber), they don't really reduce the bandwidth usage nor improve latency. When switching to Modem, the screen updates actually get much worse, I can watch the system update the screen in lines (not the whole screen is updated in one go), which looks like a bug. I have had success setting the image quality to a lower setting, the screen looks worse, which is a good indicator that it is working. I can't find any documentation on what the difference is between different compression methods. Can you point me in the right direction? If I can find the info, I would be up for updating the documentation so that others can find it better.
I asked pretty much the same question here in 2017. The only response I got was from another user who, like you and me, was only able to make a few observations by trial and error testing: <http://lists.x2go.org/pipermail/x2go-user/2017-February/004254.html>
I agree that it would be nice to get a comprehensive overview of the different settings.
Regards, Tristan
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Tristan Miller