Hi Simon, Thanks for your reply!
Yes, I did install linux-modules-extra-6.11.0-29-generic, and I can confirm that the snd-hda-codec-cs8409 module is present and loads correctly via modprobe. ALSA detects the CS8409 as card 0, and PipeWire recognizes the mixer and nodes properly. However, the system does not automatically associate the module with the hardware. Without a proper UCM profile in alsa-ucm-conf, the audio subsystem defaults to "Dummy Output", and no devices appear in GNOME sound settings or aplay -l. I had to manually compile the driver from GitHub earlier, but with the latest kernel and headers, the packaged module works — it just needs proper integration. Would it be possible to include a UCM profile for CS8409 in alsa-ucm- conf, or ensure the module is auto-loaded and mapped correctly during installation? Thanks again for your time and support! Best regards, Marek -- 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/2114760 Title: Missing drivers for Cirrus Logic CS8409 and AMDGPU on iMac 27" (2017) 5K Status in alsa-driver package in Ubuntu: New Status in alsa-ucm-conf package in Ubuntu: New Bug description: Subject: Missing drivers for Cirrus Logic CS8409 and AMDGPU on iMac 27" (2017) 5K Dear Ubuntu OS Team, I am using Ubuntu 24.04.02 on an iMac 27" (2017) 5K and have encountered issues with the Cirrus Logic CS8409 audio chip. Alsa, PulseAudio, and Pipewire are unable to properly utilize it. I found a driver on GitHub (github.com/egorenar/snd-hda-codec-cs8409), but it requires outdated headers, making it impossible to install. AMDGPU Issues: During system installation, the display appears in a tiny interface. While it works fine after changing the resolution, navigating such an interface is extremely difficult. It is unclear which resolution is correct for this iMac model. Audio Issues: There is no sound during installation, after installation, or even after system updates. The sound settings only show "Dummy Output", with no available audio devices. When I attempt to install the driver using: sudo apt install linux-headers-generic sudo apt install build-essential git gcc-12 the driver gets uninstalled after a system update, or the sound stops working entirely—forcing me to repeat the process from scratch. It seems that PulseAudio, ALSA, and Pipewire conflict with the Cirrus Logic CS8409 chip. I would like to ask if there is a solution to this issue or whether a fix could be included in an upcoming Ubuntu OS update or package release. Thank you for your help and for the great work on Ubuntu! Best regards, Marek ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: alsa-base 1.0.25+dfsg-0ubuntu7 ProcVersionSignature: Ubuntu 6.8.0-60.63~22.04.1-generic 6.8.12 Uname: Linux 6.8.0-60-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/seq: mahav 1315 F.... pipewire /dev/snd/controlC1: mahav 1317 F.... wireplumber /dev/snd/controlC0: mahav 1317 F.... wireplumber CasperMD5CheckResult: pass CurrentDesktop: zorin:GNOME Date: Mon Jun 16 20:08:10 2025 InstallationDate: Installed on 2025-06-01 (15 days ago) InstallationMedia: Zorin-OS 17.3 Core 64bit PackageArchitecture: all PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: alsa-driver UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/23/2024 dmi.bios.release: 0.1 dmi.bios.vendor: Apple Inc. dmi.bios.version: 529.140.2.0.0 dmi.board.name: Mac-BE088AF8C5EB4FA2 dmi.board.vendor: Apple Inc. dmi.board.version: iMac18,3 dmi.chassis.type: 9 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-BE088AF8C5EB4FA2 dmi.modalias: dmi:bvnAppleInc.:bvr529.140.2.0.0:bd06/23/2024:br0.1:svnAppleInc.:pniMac18,3:pvr1.0:rvnAppleInc.:rnMac-BE088AF8C5EB4FA2:rvriMac18,3:cvnAppleInc.:ct9:cvrMac-BE088AF8C5EB4FA2:sku: dmi.product.family: iMac dmi.product.name: iMac18,3 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/2114760/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
