> what output do you get when launching totem from a terminal moses@jolyne:~/Videos$ totem vapourwave.mp4
(totem:27938): Gtk-WARNING **: 15:09:23.719: Calling org.xfce.Session.Manager.Inhibit failed: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Method "Inhibit" with signature "susu" on interface "org.xfce.Session.Manager" doesn't exist ... nothing else while the video is playing. After quitting totem I see this: (totem:27938): GLib-GObject-WARNING **: 15:10:38.356: invalid (NULL) pointer instance (totem:27938): GLib-GObject-CRITICAL **: 15:10:38.356: g_signal_handlers_disconnect_matched: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed (totem:27938): GLib-GObject-WARNING **: 15:10:38.356: invalid (NULL) pointer instance (totem:27938): GLib-GObject-CRITICAL **: 15:10:38.356: g_signal_handlers_disconnect_matched: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed (totem:27938): GLib-GObject-WARNING **: 15:10:38.356: invalid (NULL) pointer instance (totem:27938): GLib-GObject-CRITICAL **: 15:10:38.356: g_signal_handlers_disconnect_matched: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed (totem:27938): Totem-CRITICAL **: 15:10:38.356: totem_object_empty_menu_section: assertion 'TOTEM_IS_OBJECT (totem)' failed > the builtin compositor can be disabled via xfwm4-tweaks-settings... launched xfwm4-tweaks-settings, to Compositor tab, unchecked the box [ ] Enable display compositing. Tried totem again, and no washed-out transparency. Workaround confirmed. Why this happens with totem and not mplayer, vlc, parole, mpv, or OpenShot, that's a head-scratcher. Especially mpv, since mpv & totem are linked to almost all the same libraries (mpv also uses libz.so.1 and linux-vdso.so.1) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-390 in Ubuntu. https://bugs.launchpad.net/bugs/1767711 Title: Nvidia+XFCE: Totem window is see-through during playback, colours washed out Status in nvidia-graphics-drivers-390 package in Ubuntu: New Status in totem package in Ubuntu: New Status in xfce4 package in Ubuntu: Incomplete Bug description: Since the upgrade to Ubuntu 18.04, the Totem player will show everything behind it during playback, and the colours of the video are washed-out. https://i.imgur.com/0AwJMmf.jpg I did not find 'tranparency' nor 'opacity' setting in the program preferences, and the colour adjudgement settings are pinned to +/-0. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: totem 3.26.0-0ubuntu6 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: XFCE Date: Sat Apr 28 14:56:29 2018 InstallationDate: Installed on 2016-06-05 (692 days ago) InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) SourcePackage: totem UpgradeStatus: Upgraded to bionic on 2018-04-27 (1 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/+bug/1767711/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp