Package: libgtk-3-0 Version: 3.18.8-1 After upgrading the library to version 3.18.8.1 i can no longer run GTK3 programs when using a USB to HDMI adapter to add a third monitor.
my usb adapter is a DisplayLink #lsusb Bus 007 Device 008: ID 17e9:4301 DisplayLink To activate the third monitor i use xrandr #xrandr --setprovideroutputsource 1 0 #xrandr --output DVI-I-1 --auto --right-of VGA1 if i turn off the monitor #xrandr --output DVI-I-1 --off the problem does not occur Downgrade the library to the previous version fixes the problem dpkg -l | grep libgtk-3 ii libgtk-3-0:amd64 3.18.7-1 amd64 ii libgtk-3-bin 3.18.8-1 amd64 ii libgtk-3-common 3.18.8-1 ii libgtk-3-dev:amd64 3.18.8-1 amd64 -- System Information: Debian Release: stretch/sid APT prefers testing APT policy: (500, 'testing'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.3.0-1-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages libgtk-3-0 depends on: ii libatk-bridge2.0-0 2.18.1-2 ii libatk1.0-0 2.18.0-1 ii libc6 2.21-9 ii libcairo-gobject2 1.14.6-1 ii libcairo2 1.14.6-1 ii libcolord2 1.2.12-1 ii libcups2 2.1.3-3 ii libepoxy0 1.3.1-1 ii libfontconfig1 2.11.0-6.3 ii libfreetype6 2.6.3-3 ii libgdk-pixbuf2.0-0 2.32.3-1.2 ii libglib2.0-0 2.46.2-3 ii libgtk-3-common 3.18.8-1 ii libjson-glib-1.0-0 1.0.4-2 ii libpango-1.0-0 1.38.1-1 ii libpangocairo-1.0-0 1.38.1-1 ii libpangoft2-1.0-0 1.38.1-1 ii librest-0.7-0 0.7.93-1 ii libsoup2.4-1 2.52.2-1 ii libwayland-client0 1.9.0-1 ii libwayland-cursor0 1.9.0-1 ii libwayland-egl1-mesa [libwayland-egl1] 11.1.2-1 ii libx11-6 2:1.6.3-1 ii libxcomposite1 1:0.4.4-1 ii libxcursor1 1:1.1.14-1+b1 ii libxdamage1 1:1.1.4-2+b1 ii libxext6 2:1.3.3-1 ii libxfixes3 1:5.0.1-2+b2 ii libxi6 2:1.7.6-1 ii libxinerama1 2:1.1.3-1+b1 ii libxkbcommon0 0.5.0-1 ii libxml2 2.9.3+dfsg1-1 ii libxrandr2 2:1.5.0-1 ii shared-mime-info 1.5-2 Versions of packages libgtk-3-0 recommends: ii libgtk-3-bin 3.18.8-1 Versions of packages libgtk-3-0 suggests: ii gvfs 1.26.2-1+b1 ii librsvg2-common 2.40.11-2 -- no debconf information