Package: libqt5gui5 Version: 5.9.1+dfsg-9 Followup-For: Bug #853831 Dear Maintainer,
I think my problem is related. I initially thought the problem was with qjackctl specifically, but I realized that many qt5 applications would not start that depended on libqt5gui5, such as virtualbox. This error is given when starting qjackctl or virtualbox: $ virtualbox /usr/lib/virtualbox/VirtualBox: symbol lookup error: /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5: undefined symbol: FT_Property_Set $ qjackctl qjackctl: symbol lookup error: /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5: undefined symbol: FT_Property_Set See #873792 @ https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=873792 After I deleted the file I mentioned in that bug report, virtualbox and qjackctl started, until I rebooted my machine. Now it is back to the same error. I had infinality fonts installed from this git repo https://github.com/cmpitg/infinality-debian-package This may be the cause of the conflict. Unfortunately, I don't know enough about this to figure out what is wrong. Uninstalling infinality did not fix the problem. # apt install --reinstall libqt5gui5 did not work. -- System Information: Debian Release: buster/sid APT prefers testing APT policy: (1000, 'testing'), (1000, 'stable'), (750, 'stable'), (50, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.12.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages libqt5gui5 depends on: ii fontconfig 2.12.3-0.2 ii libc6 2.24-14 ii libdrm2 2.4.82-1 ii libegl1-mesa [libegl1-x11] 13.0.6-1+b2 ii libfontconfig1 2.12.3-0.2 ii libfreetype6 2.8-0.2 ii libgbm1 13.0.6-1+b2 ii libgcc1 1:7.2.0-1 ii libgl1-mesa-glx [libgl1] 13.0.6-1+b2 ii libglib2.0-0 2.53.4-3 ii libharfbuzz0b 1.4.2-1 ii libice6 2:1.0.9-2 ii libinput10 1.8.0-1 ii libjpeg62-turbo 1:1.5.2-2 ii libmtdev1 1.1.5-1+b1 ii libpng16-16 1.6.31-1 ii libqt5core5a [qtbase-abi-5-9-0] 5.9.1+dfsg-9 ii libqt5dbus5 5.9.1+dfsg-9 ii libqt5network5 5.9.1+dfsg-9 ii libsm6 2:1.2.2-1+b3 ii libstdc++6 7.2.0-1 ii libudev1 234-2.3 ii libx11-6 2:1.6.4-3 ii libx11-xcb1 2:1.6.4-3 ii libxcb-glx0 1.12-1 ii libxcb-icccm4 0.4.1-1+b1 ii libxcb-image0 0.4.0-1+b2 ii libxcb-keysyms1 0.4.0-1+b2 ii libxcb-randr0 1.12-1 ii libxcb-render-util0 0.3.9-1+b1 ii libxcb-render0 1.12-1 ii libxcb-shape0 1.12-1 ii libxcb-shm0 1.12-1 ii libxcb-sync1 1.12-1 ii libxcb-xfixes0 1.12-1 ii libxcb-xinerama0 1.12-1 ii libxcb-xkb1 1.12-1 ii libxcb1 1.12-1 ii libxi6 2:1.7.9-1 ii libxkbcommon-x11-0 0.7.1-1 ii libxkbcommon0 0.7.1-1 ii zlib1g 1:1.2.8.dfsg-5 Versions of packages libqt5gui5 recommends: ii libqt5svg5 5.9.1-2+b1 ii qt5-gtk-platformtheme 5.9.1+dfsg-9 Versions of packages libqt5gui5 suggests: pn qt5-image-formats-plugins <none> pn qtwayland5 <none> -- no debconf information