hda_codec

mv /usr/bin/pulseaudio /usr/bin/pulseaudio_bak mv /sbin/alsactl /sbin/alsactl_bak

ps aux | grep -i alsactl ps aux | grep -i pulseaudio

killall alsactl pulseaudio

cd /sys/class/sound/hwC0D0

echo 1 > reconfig

snd_hda_gen_parse_auto_config+0x1 [kernel] snd_hda_parse_generic_codec+0xa3 [kernel] hda_codec_driver_probe+0x74 [kernel] really_probe+0x24b [kernel] driver_probe_device+0xb3 [kernel] bus_for_each_drv+0x76 [kernel] __device_attach+0xe5 [kernel] snd_hda_codec_configure+0xe6 [kernel] azx_codec_configure+0x2f [kernel] azx_probe_continue+0x9d0 [kernel] process_one_work+0x1a7 [kernel] worker_thread+0x30 [kernel] kthread+0x112 [kernel] ret_from_fork+0x35 [kernel]

snd_pcm_new+0x1 [kernel] snd_hda_attach_pcm_stream+0x8e [kernel] snd_hda_codec_build_pcms+0x102 [kernel] hda_codec_driver_probe+0x82 [kernel] really_probe+0x24b [kernel] driver_probe_device+0xb3 [kernel] bus_for_each_drv+0x76 [kernel] __device_attach+0xe5 [kernel] snd_hda_codec_configure+0xe6 [kernel] azx_codec_configure+0x2f [kernel] azx_probe_continue+0x9d0 [kernel] process_one_work+0x1a7 [kernel] worker_thread+0x30 [kernel] kthread+0x112 [kernel] ret_from_fork+0x35 [kernel]

./sound/pci/hda/hda_sysfs.c:436:int snd_hda_get_bool_hint(struct hda_codec codec, const char key) ./sound/pci/hda/hda_sysfs.c:420:const char snd_hda_get_hint(struct hda_codec codec, const char key) ./sound/pci/hda/hda_sysfs.c:281:static struct hda_hint get_hint(struct hda_codec codec, const char key)

./sound/pci/hda/hda_auto_parser.c:176:int snd_hda_parse_pin_defcfg(struct hda_codec codec, struct auto_pin_cfg cfg, const hda_nid_t ignore_nids, unsigned int cond_flags) ./sound/pci/hda/hda_codec.c:unsigned int snd_hda_codec_get_pincfg(struct hda_codec codec, hda_nid_t nid)

sound/pci/hda/hda_codec.c:560:init_pins

./sound/pci/hda/hda_codec.c:445:static int read_pin_defaults(struct hda_codec *codec)

混音器 pcm 转换器 codec 端 card