Package: libgtk-3-0 Version: 3.18.8-1 Severity: important when odd monitors are configured in xrandr, no gtk3 program can start up any more, as it segfaults in init_randr15.
i can't pinpoint what "odd monitor" exactly means, but it appears that it's about xrandr 1.5 monitors (more of an abstraction of what one means when saying "fullscreen" than actual graphics cards outputs which are called outputs) that are not 1:1 related to an output. to reproduce the behavior, i'm executing $ xrandr --setmonitor foobar 1000/1000x1000/1000+1920+0 none and then try running any gtk3 application. the offending monitor can be removed again by running $ xrandr --delmonitor foobar . the segfault occurs in gdkscreen-x11.c line 659, where output_info should be checked for being NULL before accessing the *struct's members. i didn't find the documentation on XRRGetOutputInfo on whether it can return NULL without overthrowing the complete protocol, but here it does, and the output should be checked, but [1] indicated it does. this issue might now only surface when playing around low-level with xrandr, but might easily become an issue once the capabilities of xrandr 1.5 are leveraged outside of developer boxes. best regards chrysn [1] https://bitbucket.org/portix/srandrd/commits/8b4627f80bd18a247222705da8d1a01dc57e9f35 -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.5.0-rc5 (SMP w/4 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init) 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 2.40.13-3 -- no debconf information -- To use raw power is to make yourself infinitely vulnerable to greater powers. -- Bene Gesserit axiom
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