bug-report gtk_common g_value_set_int assertion

[stdedos]

"Xpra-Python3-x86_64_4.0-r25468\xpra_cmd" shadow ssh://user@ip/0 --ssh="plink -ssh -agent" --opengl=no --desktop-scaling=0.75 --min-speed=70 --webcam=no --speaker=off --microphone=off --pulseaudio=no --exit-with-client=no

2020-03-04 23:55:01,551 Xpra GTK3 client version 4.0-r25468 64-bit
2020-03-04 23:55:01,553  running on Microsoft Windows 10
2020-03-04 23:55:02,891 GStreamer version 1.16.2 for Python 3.8.2 64-bit
2020-03-04 23:55:03,401 keyboard layout code 0x409
2020-03-04 23:55:03,402 identified as 'United States - English' : us
2020-03-04 23:55:03,909  keyboard settings: layout=us
2020-03-04 23:55:03,911  desktop size is 1600x900 with 1 screen:
2020-03-04 23:55:03,912   Default (423x238 mm - DPI: 96x96) workarea: 1600x860
2020-03-04 23:55:03,912     (Standard monitor types) Generic PnP Monitor (309x174 mm - DPI: 131x131)
2020-03-04 23:55:03,913  downscaled to 75%, virtual screen size: 2133x1200
2020-03-04 23:55:03,914   Default (423x238 mm - DPI: 128x128) workarea: 2133x1147
2020-03-04 23:55:03,914     (Standard monitor types) Generic PnP Monitor (309x174 mm - DPI: 175x175)
2020-03-04 23:55:26,289 enabled remote logging
2020-03-04 23:55:26,302 Xpra GTK3 shadow server version 3.0.6-r25174 64-bit
2020-03-04 23:55:26,304  running on Linux Ubuntu 16.04 xenial
2020-03-04 23:55:26,314  remote desktop size is 6400x1440

(xpra_cmd:14004): Pango-WARNING **: 23:55:27.147: couldn't load font "Bitstream Vera Sans Not-Rotated 14.662109375", falling back to "Sans Not-Rotated 14.662109375", expect ugly output.
2020-03-04 23:55:28,193 UI thread is now blocked
2020-03-04 23:55:28,488 UI thread is running again, resuming
[...]

While saving diagnostic data for #2618, also these popped up:

[...]
2020-03-05 00:05:01,241 server is OK again
2020-03-05 00:05:01,406 server is OK again
2020-03-05 00:10:19,393 Warning: long timer waiting time,
2020-03-05 00:10:19,399  UI thread polling waited 1.3 seconds longer than intended (1.8 vs 0.5)
E:\Xpra\trunk\src/xpra/gtk_common/gtk_util.py:489: Warning: g_value_set_int: assertion 'G_VALUE_HOLDS_INT (value)' failed
2020-03-05 00:10:28,922 UI thread is now blocked
2020-03-05 00:10:30,249 UI thread is running again, resuming

It's the same from r24232 and r25468

[Antoine Martin]

Thanks for reporting that, I never noticed.

Fixed in r25506.

[migration script]

this ticket has been moved to: ​https://github.com/Xpra-org/xpra/issues/2622