I have the same problem, a clue to what is going on can be found in one of the system logs:
Jan 28 14:06:30 boyce kernel: [ 8.044150] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20 Jan 28 14:06:30 boyce kernel: [ 8.044201] HDA Intel 0000:00:1b.0: setting latency timer to 64 Jan 28 14:06:30 boyce kernel: [ 8.079018] hda_codec: Unknown model for ALC883, trying auto-probe from BIOS... And there is useful information at the start of /proc/asound/card0/codec#0 Codec: Realtek ALC889A Address: 0 Vendor Id: 0x10ec0885 Subsystem Id: 0x106b3e00 Revision Id: 0x100103 Digging into the kernel source code I found in patch_realtek.c that there is a reference to the codec subsystem id for the iMac 24 which has a value of 0x106b100. So the hardware in my iMac 24 is not being recognised due to a mismatch in subsystem ids. I've modified the code to treat 0x106b3e00 as though it's 0x106b100 and I'm currently building a new kernel. I'll report back when I've tried it out. -- no external sound on 8.10 with hda intel https://bugs.launchpad.net/bugs/295042 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
