HiDPI for wayland system when WM scale factor is set

[meklonets]

For example I use swaywm with 24' monitor, 4k.
And I have "scale 2" set in my sway config. It is system-wide setting. Everything's smooth and every app gets 4k.
Besides wlfreerdp. Remote system gets FullHD instead UHD.

[akallabeth]

you need to choose:

1. Scale locally (that can be done with /smart-sizing argument)
2. Scale remotely (/scale* options, require support of remote OS)

[meklonets]

you need to choose:

1. Scale locally (that can be done with /smart-sizing argument)
2. Scale remotely (/scale* options, require support of remote OS)

I meant "pixels per inch".
Two features, you mentioned, change the sizes of interface's elements, making icons (for example) bigger or dynamic, but the resolution (grain) still FullHD.
If I remove the scale factor from Sway settings (all elements are tiny for 24', system-wide), then - yes, freerdp gets UHD, and only set we have is scale 125|140|180 scale. But 180 isn't enough scaling for 24" UHD monitors. But again in this case all other apps on swaywm are tiny.

[akallabeth]

@meklonets ok, so your problem is that with the sway scale factor the session size is reduced to FullHD?
Problem here is (just guessing from how it is done in gnome) that the scale factor just scales the application window locally.
FreeRDP on the other hand requires you to do this without any local scaling if you want a session matching your local resolution.

So, short answer: Can´t work that way, you always need FreeRDP without scale factor if you want the proper resolution for the RDP session.
(the /scale* options match what is supported by windows - RDP server, so nothing we can do client wise)

[meklonets]

@akallabeth Got it. Thank you.

[microcai]

with scale=2, wlfreerdp did not tell compositor that it supports hidpi, so wlfreerdp window is scaled by compositor, thus the remote desktop is double scaled if you specify /scale* options.