Default to Local Scaling?

[jhsansom]

Hi all,

I am running a Docker WebTop container, which leverages KasmVNC. I am planning to take screenshots across multiple users' Desktop environments, so I would like to maintain a consistent resolution (even if, for some users, the text would be larger/smaller than preferable). Is there a way to default to Scaling Mode = Local Scaling rather than Remote Resizing? I am under the impression that, since this is a client setting, it may be difficult to change.

I have seen some other suggestions, such as this one, however I don't think this accomplishes quite what I'm trying to do.

Thank you very much for your help! In the meantime I will be reading through the source code to see if I can figure out a solution, and I'll post it here if I can find it.

[jhsansom]

Solved! (Kind of!) For context, I am using a docker-webtop container rather than pure KasmVNC.

This particular setting seems to be stored in /kclient/public/index.html. Specifically, there is a line with the following:
<iframe class="vnc" src="vnc/index.html?autoconnect=1&resize=remote&clipboard_up=true&clipboard_down=true&clipboard_seamless=true&show_control_bar=true<% if(path){ %><%- path -%><% } %>"></iframe>

Changing resize=remote to resize=scale causes the setting to change as well. This can be done prior to bootup by adding the following line to the file root/defaults/startwm.sh (solution obtained from here):
sudo sed -i 's/resize=remote/resize=scale/g' /kclient/public/index.html

Now I am going to try to figure out how to induce a specific resolution rather than whatever the default is. I will post here if I figure it out.

[jhsansom]

Ok, now I've fully solved it! I just needed to add the command xrandr -s 1920x1080 to root/defaults/startwm.sh, and suddenly my container was booting in HD resolution. Note that this command must precede the last line /usr/bin/startplasma-x11 > /dev/null 2>&1 (I'm not entirely sure why, but my suspicion is that this line is continuously executed until the end of the container's lifespan).

Note that this solution does not scale the icons and the dock at the bottom. That is totally fine for my application, so I'm not going to try to solve it.