STEPS TO REPRODUCE 1.buy Hauppauge WinTv-Quad HD digital tv tuner for PCIe 2. after installing tuner launch kaffeine 3. After successful Scan for channels, click on any scanned channel OBSERVED RESULT Nothing happens. just a black window where the channel should be playing. EXPECTED RESULT Desired channel should be playing in kaffeine window. SOFTWARE/OS VERSIONS Linux version: Ubuntu 18.04.6 LTS KDE Frameworks Version: 5.44.0 Qt Version: 5.9.5 ADDITIONAL INFORMATION the XCB windowing system is listed in my "about kaffeine" sub-menu window Please note that Kaffeine was working very well until a system update.