** Tags added: kernel-daily-bug -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2173834 Title: [Renoir ACP] snd_rn_pci_acp3x does not bind to 0000:05:00.5 on HP ProBook 445 G8 (103c:8861); internal mic silent on kernel 7.0.0-43-generic Status in linux package in Ubuntu: New Bug description: Title: [Renoir ACP] snd_rn_pci_acp3x does not bind to 0000:05:00.5 on HP ProBook 445 G8 (103c:8861); internal mic silent on kernel 7.0.0-43-generic Summary ------- The internal microphone on an HP ProBook 445 G8 produces no usable audio input. The AMD ACP audio coprocessor at 0000:05:00.5 does not bind to any driver after loading snd_rn_pci_acp3x, and the kernel logs no probe success or failure. The codec path (Realtek ALC236) is connected and unmuted, but it records only the idle noise floor (about -41 dBFS peak) regardless of Capture or Internal Mic Boost gain. System ------ Distribution: Ubuntu 26.04.1 LTS Kernel: 7.0.0-43-generic #43-Ubuntu SMP PREEMPT_DYNAMIC Fri Oct 23 13:25:25 UTC 2026 x86_64 Laptop: HP ProBook 445 G8 Notebook PC CPU/APU: AMD Ryzen (Renoir/Cezanne family) PCI ACP: 0000:05:00.5 Audio Coprocessor [1022:15e2] (rev 01), subsystem 103c:8861 PCI HDA: 0000:05:00.6 Ryzen HD Audio Controller [1022:15e3], driver snd_hda_intel Codec: Realtek ALC236, codec SSID 103c:8862 (card 1, Generic_1 HD-Audio Generic) Firmware pkg: linux-firmware 20260319.git217ca6e4.1ubuntu (installed, up to date) Audio server: PipeWire / WirePlumber Observations ------------ 1. lspci -nnvk -s 05:00.5 lists modules but no driver: Kernel modules: snd_pci_acp3x, snd_rn_pci_acp3x, snd_pci_acp5x, snd_pci_acp6x, snd_acp_pci, snd_rpl_pci_acp6x, snd_pci_ps, snd_sof_amd_renoir, snd_sof_amd_rembrandt, snd_sof_amd_vangogh, snd_sof_amd_acp63, snd_sof_amd_acp70 There is no "Kernel driver in use:" line. 2. After `sudo modprobe -r snd_rn_pci_acp3x` and `sudo modprobe snd_rn_pci_acp3x`: - modprobe prints no error. - /sys/bus/pci/devices/0000:05:00.5/driver does not exist. - dmesg contains only: "snd_rn_pci_acp3x 0000:05:00.5: enabling device (0000 -> 0002)" with no probe success or failure message. 3. `modprobe -v snd_sof_amd_renoir` prints nothing, and no SOF messages appear in dmesg. 4. ACPI platform devices are present: AMDI0005:00, AMDI0010:00-05, AMDI0020:00-03, AMDI0030:00, AMDI0040:00, AMDI0060:00. 5. `arecord -l` exposes only the codec: card 1: Generic_1 [HD-Audio Generic], device 0: ALC236 Analog [ALC236 Analog] No ACP or DMIC card appears. 6. Recording from hw:1,0 (48 kHz, S16_LE, stereo, 5 to 6 s): - Capture 54/63 (+23.25 dB), Internal Mic Boost on (+12 dB): peak -41.2 dBFS, RMS -54.5 dBFS. - Capture 63/63 (+30 dB), Internal Mic Boost on (+12 dB): peak about -41 dBFS. - Recording through PipeWire with source volume 1.0 and Capture 63: peak -40.4 dBFS. Raising gain by about 7 dB did not raise the recorded level, which suggests the recorded data is the codec's idle noise rather than microphone input. 7. Codec state (/proc/asound/card1/codec#0): - Node 0x12 (Pin Complex, Stereo Amp-In): Amp-In vals [0x01 0x01], unmuted. - Pin Default 0x90a60130: "[Fixed] Mic at Int N/A", Conn = Digital, Misc = NO_PRESENCE. - Node 0x24 (Audio Selector): connection 0x12 selected. - Node 0x23 (Audio Mixer): input 0x12 present, amp unmuted. 8. PipeWire default source: "Ryzen HD Audio Controller Analog Stereo" (id 47), not muted. 9. No firmware errors in dmesg. `dpkg -L linux-firmware` contains no amd/sof or acp files. `firmware-sof-signed` is an Intel package and not a candidate for this device. 10. /etc/modprobe.d/ contains no ACP or snd options. The only "acp" match is a blacklist entry for asus_acpi. 11. Full boot log (dmesg.txt) shows the HDA codec binds normally: snd_hda_codec_alc269 hdaudioC1D0: ALC236: picked fixup for codec SSID 103c:8862 inputs: Internal Mic=0x12, Mic=0x19 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2173834/+subscriptions
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