Public bug reported: The HDMI audio on the onboard ATI RADEON 3000 (RS780 driver, GA78LMT motherboard) does not work without tweaks in GRUB.
Expected behavior: sound working over HDMI. Real behavior: no sound at all. Solution: I installed "GRUB Customizer" and put the following command in the kernel parameter (which I found after a lot of research): "quiet splash radeon.audio = 1" This needs to be resolved urgently, it can alienate novice users. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-50-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: poe 1860 F.... pulseaudio /dev/snd/pcmC2D0p: poe 1860 F...m pulseaudio /dev/snd/controlC0: poe 1860 F.... pulseaudio /dev/snd/controlC1: poe 1860 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sun Apr 25 00:39:10 2021 InstallationDate: Installed on 2021-03-04 (51 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:HDMI failed Symptom_Card: RS780 HDMI Audio [Radeon 3000/3100 / HD 3200/3300] - HDA ATI HDMI Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: poe 1860 F.... pulseaudio /dev/snd/pcmC2D0p: poe 1860 F...m pulseaudio /dev/snd/controlC0: poe 1860 F.... pulseaudio /dev/snd/controlC1: poe 1860 F.... pulseaudio Symptom_Jack: Digital Out, HDMI Symptom_Type: No sound at all Title: [GA-78LMT-USB3 6.0, ATI RS690/780 HDMI, Digital Out, HDMI] No sound at all UpgradeStatus: Upgraded to focal on 2021-03-25 (30 days ago) dmi.bios.date: 11/25/2014 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F2 dmi.board.name: GA-78LMT-USB3 6.0 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: SEx dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd11/25/2014:svnGigabyteTechnologyCo.,Ltd.:pnGA-78LMT-USB36.0:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-78LMT-USB36.0:rvrSEx:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: GA-78LMT-USB3 6.0 dmi.sys.vendor: Gigabyte Technology Co., Ltd. ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: amd64 apport-bug focal wayland-session ** Changed in: alsa-driver (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1926048 Title: [GA-78LMT-USB3 6.0, ATI RS690/780 HDMI, Digital Out, HDMI] No sound at all Status in alsa-driver package in Ubuntu: Confirmed Bug description: The HDMI audio on the onboard ATI RADEON 3000 (RS780 driver, GA78LMT motherboard) does not work without tweaks in GRUB. Expected behavior: sound working over HDMI. Real behavior: no sound at all. Solution: I installed "GRUB Customizer" and put the following command in the kernel parameter (which I found after a lot of research): "quiet splash radeon.audio = 1" This needs to be resolved urgently, it can alienate novice users. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-50-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: poe 1860 F.... pulseaudio /dev/snd/pcmC2D0p: poe 1860 F...m pulseaudio /dev/snd/controlC0: poe 1860 F.... pulseaudio /dev/snd/controlC1: poe 1860 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sun Apr 25 00:39:10 2021 InstallationDate: Installed on 2021-03-04 (51 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:HDMI failed Symptom_Card: RS780 HDMI Audio [Radeon 3000/3100 / HD 3200/3300] - HDA ATI HDMI Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: poe 1860 F.... pulseaudio /dev/snd/pcmC2D0p: poe 1860 F...m pulseaudio /dev/snd/controlC0: poe 1860 F.... pulseaudio /dev/snd/controlC1: poe 1860 F.... pulseaudio Symptom_Jack: Digital Out, HDMI Symptom_Type: No sound at all Title: [GA-78LMT-USB3 6.0, ATI RS690/780 HDMI, Digital Out, HDMI] No sound at all UpgradeStatus: Upgraded to focal on 2021-03-25 (30 days ago) dmi.bios.date: 11/25/2014 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F2 dmi.board.name: GA-78LMT-USB3 6.0 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: SEx dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd11/25/2014:svnGigabyteTechnologyCo.,Ltd.:pnGA-78LMT-USB36.0:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-78LMT-USB36.0:rvrSEx:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: GA-78LMT-USB3 6.0 dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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