This problem has been known for 5 years and has not yet been resolved https://github.com/raspberrypi/linux/issues/688
** Bug watch added: github.com/raspberrypi/linux/issues #688 https://github.com/raspberrypi/linux/issues/688 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-raspi2 in Ubuntu. https://bugs.launchpad.net/bugs/1857227 Title: PulseAudio sound disappears on hdmi via stereo output Status in linux-raspi2 package in Ubuntu: In Progress Bug description: Оn my Raspberry Pi 4 4GB version the sound constantly disappears when I connect the computer to my Samsung plasma TV using the hdmi output. This works great with an analog 3.5 jack and hdmi-vga adapter, but I can’t set up stable sound with a "clean" hdmi connection. I tried with different hdmi cables that work great with a desktop PC and other equipment and it seems like a software problem. Used operating system Ubuntu server 19.10.1 aarch64. I try removed pulseaudio and the sound works fine through alsa on hdmi To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1857227/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
