Hey,
As I was trying to test PulseAudio HDMI LPE audio support fixes, I realised that the internal sound card of my Surface 3 wasn't working anymore, using the same user-space configuration.
Looks like detection of the device regressed between 2 versions. Does this look familiar to anyone, or should I start bisecting? (which will take me absolutely ages, as the CPU is anemic on that machine)
Working: $ dmesg | grep rt5 [ 13.707825] rt5640 i2c-10EC5640:00: Device with ID register 0x6308 is not rt5640/39 [ 15.010548] cht-bsw-rt5645 cht-bsw-rt5645: snd-soc-dummy-dai <-> media-cpu-dai mapping ok [ 15.011132] cht-bsw-rt5645 cht-bsw-rt5645: snd-soc-dummy-dai <-> deepbuffer-cpu-dai mapping ok [ 15.012756] cht-bsw-rt5645 cht-bsw-rt5645: rt5645-aif1 <-> ssp2-port mapping ok [ 15.100152] input: chtrt5645 Headset as /devices/pci0000:00/808622A8:00/cht-bsw-rt5645/sound/card0/input27
$ uname -r 4.11.0-0.rc0.git4.21.surface3.fc26.x86_64
Not working: $ journalctl -b -2 | grep rt5 Oct 13 20:10:19 surface kernel: rt5640 i2c-10EC5640:00: Device with ID register 0x6308 is not rt5640/39 Oct 13 20:10:21 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk DMIC1_MAP enabled Oct 13 20:10:21 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk DMIC enabled Oct 13 20:10:21 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk MCLK_EN enabled Oct 13 20:10:21 surface kernel: bytcr_rt5640 bytcr_rt5640: ASoC: CODEC DAI rt5640-aif1 not registered Oct 13 20:10:21 surface kernel: bytcr_rt5640 bytcr_rt5640: devm_snd_soc_register_card failed -517 Oct 13 20:10:22 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk DMIC1_MAP enabled Oct 13 20:10:22 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk DMIC enabled Oct 13 20:10:22 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk MCLK_EN enabled Oct 13 20:10:22 surface kernel: bytcr_rt5640 bytcr_rt5640: ASoC: CODEC DAI rt5640-aif1 not registered Oct 13 20:10:22 surface kernel: bytcr_rt5640 bytcr_rt5640: devm_snd_soc_register_card failed -517 Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk DMIC1_MAP enabled Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk DMIC enabled Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk MCLK_EN enabled Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: ASoC: CODEC DAI rt5640-aif1 not registered Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: devm_snd_soc_register_card failed -517 Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk DMIC1_MAP enabled Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk DMIC enabled Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: quirk MCLK_EN enabled Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: ASoC: CODEC DAI rt5640-aif1 not registered Oct 13 20:10:23 surface kernel: bytcr_rt5640 bytcr_rt5640: devm_snd_soc_register_card failed -517
$ journalctl -b -2 | head -n3 | tail -n1 Oct 13 22:10:10 surface kernel: Linux version 4.13.0-0.rc2.git0.26.surface3.fc27.x86_64 (hadess@classic) (gcc version 7.1.1 20170526 (Red Hat 7.1.1-2) (GCC)) #1 SMP Tue Jul 25 18:47:03 CEST 2017
Cheers