I have the same problem - at least the same symptoms as the OP when playing MP4 viedos with totem on wayland. My video card is an ATI HD5850 using the radeon driver. The video will play in totem on xorg. It will also play on wayland with mpv or vlc.
The only warning I get from totem is: (totem:7298): Gtk-WARNING **: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node slider owner GtkScale) but I'm not sure if it is relevant. vainfo output: $ vainfo libva info: VA-API version 0.40.0 libva info: va_getDriverName() returns 0 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/r600_drv_video.so libva info: Found init function __vaDriverInit_0_40 libva info: va_openDriver() returns 0 vainfo: VA-API version: 0.40 (libva ) vainfo: Driver version: mesa gallium vaapi vainfo: Supported profile and entrypoints VAProfileMPEG2Simple : VAEntrypointVLD VAProfileMPEG2Main : VAEntrypointVLD VAProfileVC1Simple : VAEntrypointVLD VAProfileVC1Main : VAEntrypointVLD VAProfileVC1Advanced : VAEntrypointVLD VAProfileH264ConstrainedBaseline: VAEntrypointVLD VAProfileH264Main : VAEntrypointVLD VAProfileH264High : VAEntrypointVLD VAProfileNone : VAEntrypointVideoProc As I prefer totem over the other players, my current workaround is to fallback to xorg. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to totem in Ubuntu. https://bugs.launchpad.net/bugs/1727210 Title: Totum locks up with 17.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/totem/+bug/1727210/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs