I have to say sorry, cause I am a newbie in Linux. I have scrolled another bug report and found the right solution - to reset PulseAudio.
rm -r ~/.config/pulse; pulseaudio -k That worked for me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1790347 Title: [HDA-Intel - HDA Intel, playback] Playback problem. Fast forward video playback. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1790347/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
