RESOLVED CONFIGURATION CHANGED 169116
[GTK] WebKit 2.14.5 - flickering using pdf plugin 
https://bugs.webkit.org/show_bug.cgi?id=169116
Summary [GTK] WebKit 2.14.5 - flickering using pdf plugin
art
Reported 2017-03-02 19:13:50 PST
Was first reported at https://bugzilla.gnome.org/show_bug.cgi?id=779505 Opening pdf files in Epiphany Powered by WebKit 2.14.5 results in flickering. running Epiphany with the environment variable WEBKIT_DISABLE_COMPOSITING_MODE=1 or the environment variable WEBKIT_FORCE_COMPOSITING_MODE=1 doesn't seem to change this. uname -a: Linux a17030302 4.9.11-1-ARCH #1 SMP PREEMPT Sun Feb 19 13:45:52 UTC 2017 x86_64 GNU/Linux Versions: webkit2gtk 2.14.5-1 Web 3.22.6 GNOME Document Viewer 3.22.1 lspci | grep VGA: 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 0c) Will be glad to provide further info! Best wishes,
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art
Comment 1 2017-03-02 20:00:44 PST
probably, the overal experience is still somewhat better launching browser with WEBKIT_FORCE_COMPOSITING_MODE=1 epiphany (with compton running in the background). But either way flickering comes through rather noticably. Here's the terminal output i get launching epiphnay in two different ways with compton in the background: case 1: [user2@a17030302 ~]$ WEBKIT_DISABLE_COMPOSITING_MODE=1 epiphany (epiphany:1913): Gtk-WARNING **: Allocating size to GtkSocket 0x15ac390 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate? Error sending IPC message: Broken pipe Error sending IPC message: Broken pipe case 2: [user2@a17030302 ~]$ WEBKIT_FORCE_COMPOSITING_MODE=1 epiphany (epiphany:2111): Gtk-WARNING **: Allocating size to GtkSocket 0x1e59380 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate? (epiphany:2111): Gtk-WARNING **: Allocating size to GtkSocket 0x1e59380 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate?
Adrian Perez
Comment 2 2020-07-24 15:59:05 PDT
Epiphany does not use anymore a NPAPI plug-in to show PDFs, and we are planning on sunsetting the support for those anyway along the year: This won't be an issue.
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