Pango-WARNING couldn't load font

[Antoine Martin]

Originally reported in ticket:2550#comment:3.

Links:

• ​shoes3 : Pango-WARNING couldn't load font
• ​Pango unable to find fonts with librsvg

Not sure there's much we can do.
There's no "pango-query-modules" in the latest versions.
Overriding g_log_set_handler would be a pain: ​I found out this is currently not possible and a known bug within either gobject-introspection or glib, since g_log_set_handler is not bindable

[stdedos]

Now that I have some time and a clean head: The original reason I reported this bug (rather I made a comment which opened a bug) is this:

The text rendering is a bit tiring on the eyes. Compare:

2590-client-win10-Xpra_cmd_2020-02-12_21-34-42.png

vs

2590-native-ubuntu-Screenshot from 2020-02-12 21-39-40.png

vs attaching from server itself

2590-client-ubuntu-Screenshot from 2020-02-12 21-38-18.png

I am also attaching the settings (and overrides) I've done. I think I made the settings well enough, so, at least when attaching from itself, quality could skyrocket (and feel as-native)

---

I have also tested with and without opengl.

The "only" two constant warnings are: This (attaching from windows) and that

$ xpra attach 1
xpra for python 2.7 is not installed
 retrying with python3
2020-02-21 23:22:00,425 Xpra GTK3 X11 client version 3.0.6-r25174 64-bit
2020-02-21 23:22:00,526  running on Linux Ubuntu 16.04 xenial
2020-02-21 23:22:00,527  window manager is 'Compiz'
2020-02-21 23:22:00,674 No OpenGL_accelerate module loaded: No module named 'OpenGL_accelerate'
2020-02-21 23:22:00,993 OpenGL enabled with Quadro P400/PCIe/SSE2
2020-02-21 23:22:01,026  keyboard settings: layout=us, model=pc105, rules=evdev
2020-02-21 23:22:01,029  desktop size is 6400x1440 with 1 screen:
2020-02-21 23:22:01,029   :0.0 (1693x381 mm - DPI: 96x96) workarea: 6341x1416 at 59x24
2020-02-21 23:22:01,029     DP-0 2560x1440 (597x336 mm - DPI: 108x108)
2020-02-21 23:22:01,029     DP-2 1920x1080 at 2560x180 (527x296 mm - DPI: 92x92)
2020-02-21 23:22:01,029     DP-4 1920x1080 at 4480x180 (527x296 mm - DPI: 92x92)
2020-02-21 23:22:01,030  upscaled to 125%, virtual screen size: 5120x1152
2020-02-21 23:22:01,030   :0.0 (1693x381 mm - DPI: 76x76) workarea: 5073x1133 at 47x19
2020-02-21 23:22:01,030     DP-0 2048x1152 (597x336 mm - DPI: 87x87)
2020-02-21 23:22:01,030     DP-2 1536x864 at 2048x144 (527x296 mm - DPI: 74x74)
2020-02-21 23:22:01,030     DP-4 1536x864 at 3584x144 (527x296 mm - DPI: 74x74)
2020-02-21 23:22:01,061 Warning: invalid frame extents value '[0, 0, 0, 0, 0, 0, 28, 0]'
2020-02-21 23:22:01,062  this is probably a bug in 'Compiz'
2020-02-21 23:22:01,062  using '[0, 0, 28, 0]' instead
2020-02-21 23:22:01,224 enabled fast mmap transfers using 281MB shared memory area
2020-02-21 23:22:01,225 enabled remote logging
2020-02-21 23:22:01,226 Xpra GTK3 X11 server version 3.0.6-r25174 64-bit
2020-02-21 23:22:01,226  running on Linux Ubuntu 16.04 xenial
2020-02-21 23:22:01,228  no need for scaling with mmap
2020-02-21 23:22:01,231 Warning: Invalid Scale Factor
2020-02-21 23:22:01,231  cannot scale by 100% x 100% or lower
2020-02-21 23:22:01,231  the scaled client screen 6400 x 1440 -> 6400 x 1440
2020-02-21 23:22:01,232   would overflow the server's screen: 5760 x 2560
2020-02-21 23:22:01,237 Attached to socket:///run/user/1000/xpra/sntentos-precision-t3620-1
2020-02-21 23:22:01,237  (press Control-C to detach)

2020-02-21 23:22:01,580 server does not support xi input devices
2020-02-21 23:22:01,581  server uses: xtest
2020-02-21 23:22:26,458 Warning: CLIPBOARD selection request for 'TARGETS' timed out
2020-02-21 23:22:26,459  request 0 at time=0
^C
2020-02-21 23:22:36,435 got signal SIGINT
2020-02-21 23:22:36,436 exiting

When attaching from the server itself

[Antoine Martin]

Please don't use this ticket, this has nothing to do with font rendering in applications server side.
The pango warning is client-side and means that something in GTK is loading pango and having this problem.
Pango is not used client side for rendering server side applications.

[stdedos]

Replying to Antoine Martin:

Please don't use this ticket, this has nothing to do with font rendering in applications server side.
The pango warning is client-side and means that something in GTK is loading pango and having this problem.
Pango is not used client side for rendering server side applications.

Yeah, I saw that coming ...

If you want to move all of that to a new ticket and clean it up from here, no objection by me