I'm experiencing the exact same issue on a ThinkPad T15 Gen 1 (20S7S3VT00).
**System details:** - BIOS: N2XET43W (v1.33), dated 2025-02-10 - Intel ME Firmware: 14.1.77.2497 - CPU: Intel Core i5-10310U (Comet Lake) - Audio chip: Intel Comet Lake PCH-LP cAVS (PCI 00:1f.3) - Codec: Realtek ALC257 - OS: Kubuntu 24.04 - Tested on Kernel 6.8.0-107-generic and 6.17.0-20-generic (HWE) - firmware-sof-signed: 2023.12.1-1ubuntu1.10 - All firmware up to date according to fwupd (no updates available) **Symptoms:** Identical dmesg output: ``` sof-audio-pci-intel-cnl 0000:00:1f.3: cl_dsp_init: timeout with rom_status_reg (0x80000) read sof-audio-pci-intel-cnl 0000:00:1f.3: Boot iteration failed: 3/3 sof-audio-pci-intel-cnl 0000:00:1f.3: 0x06000021: module: ROM, state: CSE_IPC_RESET_PHASE_1, waiting for: CSE_CSR, running sof-audio-pci-intel-cnl 0000:00:1f.3: error: dsp init failed after 3 attempts with err: -110 ``` **What I've tried:** - Setting `dsp_driver=1` restores speakers/headphones via snd-hda-intel, but the internal DMIC microphone requires the SOF driver - Tested Kernel 6.17 (HWE) — same failure - Tested Fedora 40 Live USB — same failure - BIOS and ME firmware are at latest version per fwupd - SOF firmware reinstalled - Full modprobe cleanup performed **Timeline:** Audio (including internal microphone) was working in January 2025. The BIOS was updated to v1.33 on 2025-02-10. The issue was noticed approximately one month later. I cannot confirm with certainty whether the BIOS update caused the regression, but the timing aligns. **Workaround:** Using `options snd-intel-dspcfg dsp_driver=1` in modprobe.d restores speaker and headphone output, but the internal digital microphones remain non-functional since they depend on the SOF DSP path. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2121736 Title: Audio not working on Lenovo ThinkPad T14 with Ubuntu 24.04 – SOF driver (sof-audio-pci-intel-cnl) fails to boot DSP firmware (err: -110), results in Dummy Output. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/2121736/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
