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I finally upgraded from 16.04 to 18.04. Teamviewer was working just fine in 16.04. After the upgrade when I try to launch the GUI it gives me:

/opt/teamviewer/tv_bin/TeamViewer: symbol lookup error: /opt/qt514/lib/libQt5XcbQpa.so.5: undefined symbol: FT_Get_Font_Format

I made sure it was already on a new enough version of freetype because of the whole FT_Get_X11_Font_Format vs FT_Get_Font_Format issue that normally causes this error.

It seems the function is available:

rreese@rreese-desktop:~$ sudo readelf -s /usr/lib/x86_64-linux-gnu/libfreetype.so | grep -i font_format
   195: 000000000000fc10     2 FUNC    GLOBAL DEFAULT   12 FT_Get_X11_Font_Format
   208: 000000000000fbe0    43 FUNC    GLOBAL DEFAULT   12 FT_Get_Font_Format

I tried upgrading QT thinking that might be the issue, but 5.14 gives me the same error. I'm kinda at my wits end here. Does anyone have some suggestions?

Thanks!

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So it turns out there was an old "fix" I had for FFMPEG in /etc/ld.so.conf.d/ that was pointing at another lib folder. It must have taken priority because I saw when I ran teamviewer with strace it was using libfreetype.so.6 from there. Must have been a older version without the FT_Get_Font_Format because when I removed that 'fix' it grabbed the correct version and was fine.

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    This issue cost me several hours, though in my case, it was zoom. One other note is you may need to run ldconfig as root after modifying these files.
    – Tad M.
    May 4, 2021 at 19:53

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