Tdesktop: fontconfig warnings while using telegram

[shirishag75]

Hi all,
I am running telegram and coming across these fontconfig warnings while running it. Am running the latest stable 0.7.17 :-

$ ./Telegram
libs init..
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number

Can somebody figure this out.

[hai-nguyen-van]

Would you mind at least give some details regarding the operating system you are running ?

[bilelmoussaoui]

I had the same thing on ubuntu 14.04 (elementaryt os 0.3 beta 2) pantheon dekstop manager! Linux Kernel 3.19

[shirishag75]

I am running on Debian Jessie/testing (amd64) . I am running kernel 3.16.0-4 . Please let me know if you need any more info. about my setup.

[icaroperseo]

I also have the same problem with both versions (stable & dev):

user@system~> $ ./Telegram
libs init..
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number

Currently I'm using Slackware x86_64 MATE. Moreover, the _fontconfig_ directory is automatically created in my _home_ directory each time it starts (if not exist the directory). It seems like does not use the _~/.cache/fonconfig_ as default.

[shirishag75]

which fonts are these ? if they are freely-licensed then we could get them packaged for various GNU/Linux distributions and let telegram just check for the existence of the fonts.

If not, then probably something else. Do think that the warnings themselves say something about how good/bad the fonts are but unable to know how to fix it.

[neteler]

The same thing happens on Fedora 21 (using the current Telegram Desktop version 0.8.21)

They come from this package:
rpm -qf /etc/fonts/conf.d/10-scale-bitmap-fonts.conf
fontconfig-2.11.1-5.fc21.x86_64
fontconfig-2.11.1-5.fc21.i686

rpm -qf /etc/fonts/conf.d/69-gnu-free-sans.conf
gnu-free-sans-fonts-20120503-10.fc21.noarch

etc

[rcoacci]

It seems the version of fontconfig used in TDesktop is too old, see: https://bugs.freedesktop.org/show_bug.cgi?id=70258, this seems to be the problem with Steam too.

[KeiroD]

Try rm -rf the relevant fontconfig file that Telegram complains about. After that, run fc-cache -fv. Should work for just about every distro, but if not, google how to do a font cache rebuild for your specific distro.

This should resolve the fontconfig error for you.

[lindhe]

That didn't do it for me. I'm running Arch Linux. Any idea?

Edit: A reboot did though.

[WuglyakBolgoink]

Ubuntu 16.04
Linux AE 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

c:~/dev/programms/Telegram$ ./Telegram &
[1] 2466
c:~/dev/programms/Telegram$ Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number
c:~/dev/programms/Telegram$ 

v 0.9.42 stable

[shirishag75]

@KeiroD your instructions worked like a charm. running just a bit behind stable, 0.9.33. Would try to see if the updater works or would have to get the new version manually.

[KeiroD]

@shirishag75 Glad to hear it worked for ya.

The updater worked for me just fine after I did the fontconfig rebuild. You should be able to update Telegram using the updater.

[liuxueyang]

@KeiroD Thanks for your help, it works on openSUSE Leap 42.1 :+1:

[frangio]

How is deleting this file a solution? This is a file installed by a different package!

Telegram complains because it's linked to an old fontconfig version, not because the file is at fault.

[fancywriter]

@frangio why do you think that telegram is linked to an old fontconfig version? I don't see any exact version specified in Telegram/gyp/qt.gypi.

[KeiroD]

Deleting the file and using the command I provided to rebuild the cache solves the problem. I don't see what the problem is?

[mjg]

@KeiroD These files are installed by a distro package (fontconfig), so simply removing looks like an odd solution - telegram's fontconfig can't cope with conf files that the system's fontconfig can cope with, apparently.

[telmotrooper]

For those on Arch Linux who, like me, couldn't fix it with the instructions by @KeiroD and @lindhe, I'd just like to point out that Telegram has finally been released in the official repositories, so you can get a working and up-to-date version with a simple sudo pacman -S telegram-desktop.

[Aokromes]

Test after 8ee958bfa08b2ba87cffaf8de4b65b6890e59ea3

[shirishag75]

With the latest telegram desktop the issue is no longer there. There are issues with font issues but that's a separate issue.