running on linux unknown

[nsauter]

Hello,

since i've updated my workstation and the remote worstation to fedora 31 with the newest xpra version (both - xpra v4.0.1-r26379) im getting a "running on linux unknown unknown unknown" in the xpra startup log.

2020-06-04 11:54:38,879 Authentication (publickey) successful!
2020-06-04 11:54:39,205  keyboard settings: rules=evdev, model=pc105, layout=de
2020-06-04 11:54:39,208  desktop size is 5360x1440 with 1 screen:
2020-06-04 11:54:39,209   :0.0 (1418x381 mm - DPI: 96x96) workarea: 5360x1053 at 0x387
2020-06-04 11:54:39,209     AUO eDP-1 1920x1080 at 0x360 (293x165 mm - DPI: 166x166)
2020-06-04 11:54:39,209     ACR DP-1 3440x1440 at 1920x0 (795x334 mm - DPI: 109x109)
2020-06-04 11:54:42,251 enabled remote logging
2020-06-04 11:54:42,252 Xpra GTK3 X11 server version 4.0.1-r26379 64-bit
2020-06-04 11:54:42,253  running on Linux unknown unknown unknown
2020-06-04 11:54:42,376 server does not support xi input devices
2020-06-04 11:54:42,376  server uses: xtest

Im also not able to start any child processes. For instance:
Im starting a tool, which starts evince, libreoffice... by pressing a button. That worked with the last version, but not with this one. Maybe the "unknown unknwn unknown" problem is connected with this?

Ask if you need any further information.

Thanks in advance

[Antoine Martin]

running on Linux unknown unknown unknown

That's odd, I'm not seeing this here on F31 or F32 with the official packages.
How did you install xpra?

Im starting a tool, which starts evince, libreoffice... by pressing a button

What tool can I use to reproduce the problem.
Is the tool started with --start=?
Does it work if you do the same thing from an xterm running through xpra? (it does for me)

Perhaps you're not using --start and therefore not using the correct environment.
In that case, the application may start but somewhere else.. like maybe on a wayland display.