Created attachment 100893 [details] Video of the Issue ( Works fine in VLC ) +++ This bug was initially created as a clone of Bug #366806 +++ Whenever I try to play a clip (either from the project bin or from the tracks) the project monitor remains blank (gray). There is sound, the overlays work. I can even edit the video (blindly) but I can't seem to turn on motion picture in the project monitor. My version info are OS : Ubuntu 15.10 (x64) Graphics Card: NVIDEA Kdnlive: 16.08.0 Downloaded from: PPA of kdnlive Kde Frameworks: 5.15.0 Qt version : 5.4.2 OpenGL info OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) Haswell Mobile OpenGL core profile version string: 3.3 (Core Profile) Mesa 11.0.2 OpenGL core profile shading language version string: 3.30 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile OpenGL core profile extensions: OpenGL version string: 3.0 Mesa 11.0.2 OpenGL shading language version string: 1.30 OpenGL context flags: (none) OpenGL extensions: OpenGL ES profile version string: OpenGL ES 3.0 Mesa 11.0.2 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00 OpenGL ES profile extensions: .
------------------Update------------------------ On running kdenlive it starting with error could not find drkonqi at : /usr/lib/x86_64-linux-gnu/libexec/drkonqi But on finding it using $locate drkonqi it was found at /usr/lib/kde4/libexec/drkonqi
Created attachment 100935 [details] Fedora24 package management history Before these transactions : bug not present. After these transactions : bug present.
Same issue, although everything worked fine a few days ago. Project monitor, or clip monitor, stay black when i click the "play" button. I tried to reset settings : problem still there. I tried to delete kdenlive config folders in my home directory : problem still there. I tried to create a new project, and only insert a videoclip without adding any effect : problem still there. (so no relation to bug ID 367686) I run Kdenlive 16.04.3 on up-to-date Fedora 24 MATE spin with 4.7.2-201 kernel and NVIDIA 367.44 proprietary drivers for my GeForce GTX 970. I tried with kernel 4.6.7-300, problem still there. Please find my package manager history in attachments. Does one of these transactions could have created the problem ? They are the only system modifications I did between the moment the project monitor in kdenlive worked and the moment it doesn't work anymore. Maybe xorg server package updates ?
I think it has something to do with your nvidia card. Are you using tthe nvidia driver only or the bumblebee project? Can you try it with a live system without the nvidia driver installed? This seems related to this issue: https://bugs.kde.org/show_bug.cgi?id=361374 Cheers!