https://bugs.kde.org/show_bug.cgi?id=370987
--- Comment #1 from Evert Vorster <evert.vors...@yandex.com> --- Downgrading to 16.07.70 git tag: r7612 fixes this issue, so it's a fairly recent change that introduced this issue. Console output when it crashes: [evert@Vorster ~]$ kdenlive "This is a beta version. Always backup your data" WARNING: Phonon::createPath: Cannot connect Phonon::MediaObject ( no objectName ) to Phonon::AudioOutput ( no objectName ). Cannot make QOpenGLContext current in a different thread KCrash: Application 'kdenlive' crashing... KCrash: Attempting to start /usr/lib/drkonqi from kdeinit sock_file=/run/user/1000/kdeinit5__0 pa_write() failed while trying to wake up the mainloop: Bad file descriptor pa_write() failed while trying to wake up the mainloop: Bad file descriptor pa_write() failed while trying to wake up the mainloop: Bad file descriptor Invalid write to eventfd: Bad file descriptor Code should not be reached at pulsecore/fdsem.c:199, function pa_fdsem_post(). Aborting. Unable to start Dr. Konqi [evert@Vorster ~]$ Console output with the older version running properly: [evert@Vorster .config]$ kdenlive "This is an untested development version. Always backup your data" OpenGL vendor: "NVIDIA Corporation" OpenGL renderer: "GeForce GTX 960/PCIe/SSE2" OpenGL Threaded: true OpenGL ARG_SYNC: true OpenGL OpenGLES: false OpenGL vendor: "NVIDIA Corporation" OpenGL renderer: "GeForce GTX 960/PCIe/SSE2" OpenGL Threaded: true OpenGL ARG_SYNC: true OpenGL OpenGLES: false QXcbConnection: XCB error: 8 (BadMatch), sequence: 19766, resource id: 37749199, major code: 130 (Unknown), minor code: 3 QXcbConnection: XCB error: 8 (BadMatch), sequence: 19794, resource id: 37749199, major code: 130 (Unknown), minor code: 3 QXcbConnection: XCB error: 8 (BadMatch), sequence: 19830, resource id: 37749199, major code: 130 (Unknown), minor code: 3 ^C [evert@Vorster .config]$ -- You are receiving this mail because: You are watching all bug changes.