Ytdyklly

How can I check if the sound card of my laptop, a Dell XPS 13 (2015) (9343), is loaded in HDA mode or in I2S mode?

According to ArchWiki, that laptop has a dual-mode sound card

Hardware:

[mattia@arch-xps ~]$ lspci -nn

00:00.0 Host bridge [0600]: Intel Corporation Broadwell-U Host Bridge-OPI [8086:1604] (rev 09)

00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 5500 [8086:1616] (rev 09)

00:03.0 Audio device [0403]: Intel Corporation Broadwell-U Audio Controller [8086:160c] (rev 09)

00:04.0 Signal processing controller [1180]: Intel Corporation Broadwell-U Processor Thermal Subsystem [8086:1603] (rev 09)

00:14.0 USB controller [0c03]: Intel Corporation Wildcat Point-LP USB xHCI Controller [8086:9cb1] (rev 03)

00:16.0 Communication controller [0780]: Intel Corporation Wildcat Point-LP MEI Controller #1 [8086:9cba] (rev 03)

00:1b.0 Audio device [0403]: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0] (rev 03)

00:1c.0 PCI bridge [0604]: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 [8086:9c90] (rev e3)

00:1c.3 PCI bridge [0604]: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 [8086:9c96] (rev e3)

00:1d.0 USB controller [0c03]: Intel Corporation Wildcat Point-LP USB EHCI Controller [8086:9ca6] (rev 03)

00:1f.0 ISA bridge [0601]: Intel Corporation Wildcat Point-LP LPC Controller [8086:9cc3] (rev 03)

00:1f.2 SATA controller [0106]: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] [8086:9c83] (rev 03)

00:1f.3 SMBus [0c05]: Intel Corporation Wildcat Point-LP SMBus Controller [8086:9ca2] (rev 03)

00:1f.6 Signal processing controller [1180]: Intel Corporation Wildcat Point-LP Thermal Management Controller [8086:9ca4] (rev 03)

01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5249 PCI Express Card Reader [10ec:5249] (rev 01)

02:00.0 Network controller [0280]: Broadcom Limited BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)

Dmesg:

[mattia@arch-xps ~]$ dmesg

[    0.000000] microcode: microcode updated early to revision 0x25, date = 2017-01-27

[    0.000000] Linux version 4.11.5-2-ck (mattia@arch-xps) (gcc version 7.1.1 20170516 (GCC) ) #1 SMP PREEMPT Thu Jun 15 18:44:16 CEST 2017

[    0.000000] Command line: initrd=intel-ucode.img initrd=initramfs-linux-ck.img root=PARTUUID=3a0ebdfc-e32f-4a35-a482-35dcfd8ee34a resume=PARTUUID=18f13113-dc7f-4138-8084-4e4a67c581ba elevator=bfq nowatchdog rw

[    0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'

[    0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'

[    0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'

[    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256

[    0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.

[    0.000000] e820: BIOS-provided physical RAM map:

...

[    1.134601] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0

[    1.134898] xhci_hcd 0000:00:14.0: xHCI Host Controller

[    1.134905] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2

[    1.135992] xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x100 quirks 0x0004b810

[    1.135998] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported

[    1.136266] hub 2-0:1.0: USB hub found

[    1.136284] hub 2-0:1.0: 11 ports detected

[    1.140057] xhci_hcd 0000:00:14.0: xHCI Host Controller

[    1.140061] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 3

[    1.140221] hub 3-0:1.0: USB hub found

[    1.140235] hub 3-0:1.0: 4 ports detected

[    1.141794] ahci 0000:00:1f.2: version 3.0

[    1.141964] ahci 0000:00:1f.2: SSS flag set, parallel bus scan disabled

[    1.152044] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 4 ports 6 Gbps 0x8 impl SATA mode

[    1.152047] ahci 0000:00:1f.2: flags: 64bit ncq stag pm led clo only pio slum part deso sadm sds apst 

[    1.152452] scsi host0: ahci

[    1.152598] scsi host1: ahci

[    1.152697] scsi host2: ahci

[    1.152789] scsi host3: ahci

[    1.152825] ata1: DUMMY

[    1.152826] ata2: DUMMY

[    1.152826] ata3: DUMMY

[    1.152828] ata4: SATA max UDMA/133 abar m2048@0xf7422000 port 0xf7422280 irq 46

[    1.480802] ata4: SATA link up 6.0 Gbps (SStatus 133 SControl 300)

[    1.483284] ata4.00: NCQ Send/Recv Log not supported

[    1.483290] ata4.00: ATA-9: SAMSUNG SSD PM851 M.2 2280 256GB, EXT25D0Q, max UDMA/133

[    1.483294] ata4.00: 500118192 sectors, multi 16: LBA48 NCQ (depth 31/32), AA

[    1.484011] ata4.00: NCQ Send/Recv Log not supported

[    1.484068] ata4.00: configured for UDMA/133

[    1.484431] scsi 3:0:0:0: Direct-Access     ATA      SAMSUNG SSD PM85 5D0Q PQ: 0 ANSI: 5

[    1.487748] usb 1-1: new high-speed USB device number 2 using ehci-pci

[    1.507784] usb 2-1: new full-speed USB device number 2 using xhci_hcd

[    1.564223] sd 3:0:0:0: [sda] 500118192 512-byte logical blocks: (256 GB/238 GiB)

[    1.564249] sd 3:0:0:0: [sda] Write Protect is off

[    1.564254] sd 3:0:0:0: [sda] Mode Sense: 00 3a 00 00

[    1.564306] sd 3:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA

[    1.567449]  sda: sda1 sda2 sda3 sda4

[    1.567749] sd 3:0:0:0: [sda] Attached SCSI disk

[    1.652454] hub 1-1:1.0: USB hub found

[    1.652622] hub 1-1:1.0: 8 ports detected

[    1.658128] PM: Starting manual resume from disk

[    1.658131] PM: Hibernation image partition 8:2 present

[    1.658132] PM: Looking for hibernation image.

[    1.658305] PM: Image not found (code -22)

[    1.658306] PM: Hibernation image not present or could not be loaded.

[    1.679878] random: fast init done

[    1.731749] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null)

[    1.808971] ip_tables: (C) 2000-2006 Netfilter Core Team

[    1.813785] systemd[1]: systemd 232 running in system mode. (+PAM -AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN)

[    1.813932] systemd[1]: Detected architecture x86-64.

[    1.814557] systemd[1]: Set hostname to <arch-xps>.

[    1.817732] usb 2-3: new full-speed USB device number 3 using xhci_hcd

[    1.882521] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.

[    1.883233] systemd[1]: Created slice User and Session Slice.

[    1.883333] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.

[    1.883425] systemd[1]: Listening on Journal Socket (/dev/log).

[    1.883514] systemd[1]: Started Forward Password Requests to Wall Directory Watch.

[    1.883602] systemd[1]: Listening on Device-mapper event daemon FIFOs.

[    1.883690] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.

[    1.901987] EXT4-fs (sda3): re-mounted. Opts: discard,data=ordered

[    2.030202] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input2

[    2.030783] ACPI: Lid Switch [LID0]

[    2.030854] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input3

[    2.030857] ACPI: Power Button [PBTN]

[    2.031841] ACPI: AC Adapter [AC] (off-line)

[    2.033912] proc_thermal 0000:00:04.0: enabling device (0000 -> 0002)

[    2.035422] input: Sleep Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input4

[    2.035428] ACPI: Sleep Button [SBTN]

[    2.035539] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input5

[    2.035542] ACPI: Power Button [PWRF]

[    2.044011] ACPI Warning: _SB.IETM._ART: Return Package type mismatch at index 0 - found Integer, expected Reference (20170119/nspredef-297)

[    2.044021] ACPI: Invalid package element [0]: got number, expecting [R]

[    2.044022] _ART package 0 is invalid, ignored

[    2.097729] tsc: Refined TSC clocksource calibration: 2194.918 MHz

[    2.097734] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fa37202099, max_idle_ns: 440795206796 ns

[    2.102435] systemd-journald[185]: Received request to flush runtime journal from PID 1

[    2.137774] usb 2-5: new high-speed USB device number 4 using xhci_hcd

[    2.199459] hidraw: raw HID events driver (C) Jiri Kosina

[    2.200577] (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info().

[    2.202927] thermal LNXTHERM:00: registered as thermal_zone7

[    2.202929] ACPI: Thermal Zone [THM] (25 C)

[    2.204142] wmi: Mapper loaded

[    2.212758] thermal LNXTHERM:01: registered as thermal_zone8

[    2.212760] ACPI: Thermal Zone [TZ00] (34 C)

[    2.222982] thermal LNXTHERM:02: registered as thermal_zone9

[    2.222984] ACPI: Thermal Zone [TZ01] (34 C)

[    2.231379] ACPI: Battery Slot [BAT0] (battery present)

[    2.298443] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4

[    2.338464] i801_smbus 0000:00:1f.3: SPD Write Disable is set

[    2.338539] i801_smbus 0000:00:1f.3: SMBus using PCI interrupt

[    2.348705] intel_pch_thermal 0000:00:1f.6: enabling device (0000 -> 0002)

[    2.348941] (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info().

[    2.349005] snd_hda_intel 0000:00:03.0: enabling device (0000 -> 0002)

[    2.349145] snd_hda_intel 0000:00:1b.0: enabling device (0000 -> 0002)

[    2.361342] Adding 8911868k swap on /dev/sda2.  Priority:-1 extents:1 across:8911868k SSFS

[    2.375421] snd_hda_codec_realtek hdaudioC1D0: autoconfig for ALC3263: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker

[    2.375423] snd_hda_codec_realtek hdaudioC1D0:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)

[    2.375425] snd_hda_codec_realtek hdaudioC1D0:    hp_outs=1 (0x21/0x0/0x0/0x0/0x0)

[    2.375426] snd_hda_codec_realtek hdaudioC1D0:    mono: mono_out=0x0

[    2.375428] snd_hda_codec_realtek hdaudioC1D0:    inputs:

[    2.375430] snd_hda_codec_realtek hdaudioC1D0:      Headset Mic=0x18

[    2.375432] snd_hda_codec_realtek hdaudioC1D0:      Headphone Mic=0x1a

[    2.375433] snd_hda_codec_realtek hdaudioC1D0:      Internal Mic=0x12

[    2.378024] input: PC Speaker as /devices/platform/pcspkr/input/input6

[    2.393846] wl: loading out-of-tree module taints kernel.

[    2.393849] wl: module license 'MIXED/Proprietary' taints kernel.

[    2.393850] Disabling lock debugging due to kernel taint

[    2.395919] RAPL PMU: API unit is 2^-32 Joules, 4 fixed counters, 655360 ms ovfl timer

[    2.395921] RAPL PMU: hw unit of domain pp0-core 2^-14 Joules

[    2.395922] RAPL PMU: hw unit of domain package 2^-14 Joules

[    2.395922] RAPL PMU: hw unit of domain dram 2^-14 Joules

[    2.395923] RAPL PMU: hw unit of domain pp1-gpu 2^-14 Joules

[    2.396427] dcdbas dcdbas: Dell Systems Management Base Driver (version 5.6.0-3.2)

[    2.404262] wl 0000:02:00.0: enabling device (0000 -> 0002)

[    2.427078] AVX2 version of gcm_enc/dec engaged.

[    2.427079] AES CTR mode by8 optimization enabled

[    2.441627] random: crng init done

[    2.452210] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/sound/card1/input7

[    2.452405] input: HDA Intel PCH Headphone Mic as /devices/pci0000:00/0000:00:1b.0/sound/card1/input9

[    2.469884] wlan0: Broadcom BCM43b1 802.11 Hybrid Wireless Controller 6.30.223.271 (r587334)



[    2.476553] [drm] Memory usable by graphics device = 4096M

[    2.476556] checking generic (e0000000 7e9000) vs hw (e0000000 10000000)

[    2.476557] fb: switching to inteldrmfb from EFI VGA

[    2.476580] Console: switching to colour dummy device 80x25

[    2.476687] [drm] Replacing VGA console driver

[    2.477144] [drm] ACPI BIOS requests an excessive sleep of 25000 ms, using 1500 ms instead

[    2.488089] EXT4-fs (sda4): mounted filesystem with ordered data mode. Opts: discard,data=ordered

[    2.490303] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).

[    2.490304] [drm] Driver supports precise vblank timestamp query.

[    2.492246] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem

[    2.499820] intel_rapl: Found RAPL domain package

[    2.499823] intel_rapl: Found RAPL domain core

[    2.499824] intel_rapl: Found RAPL domain uncore

[    2.499825] intel_rapl: Found RAPL domain dram

[    2.499830] intel_rapl: RAPL package 0 domain package locked by BIOS

[    2.499835] intel_rapl: RAPL package 0 domain dram locked by BIOS

[    2.502529] [drm] Initialized i915 1.6.0 20170123 for 0000:00:02.0 on minor 0

[    2.503948] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)

[    2.506665] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input10

[    2.506995] snd_hda_intel 0000:00:03.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])

[    2.507006] [drm] Initialized i915 1.6.0 20170123 for 0000:00:02.0 on minor 0

[    2.604468] dell_wmi: Detected Dell WMI interface version 1

[    2.604594] input: Dell WMI hotkeys as /devices/virtual/input/input11

[    2.608888] input: DLL0665:01 06CB:76AD Touchpad as /devices/pci0000:00/INT3433:00/i2c-1/i2c-DLL0665:01/0018:06CB:76AD.0001/input/input13

[    2.608965] hid-multitouch 0018:06CB:76AD.0001: input,hidraw0: I2C HID v1.00 Mouse [DLL0665:01 06CB:76AD] on i2c-DLL0665:01

[    2.610405] wl 0000:02:00.0 wlp2s0: renamed from wlan0

[    2.655707] mousedev: PS/2 mouse device common for all mice

[    2.668750] fbcon: inteldrmfb (fb0) is primary device

[    3.108005] clocksource: Switched to clocksource tsc

[    3.426028] media: Linux media interface: v0.10

[    3.431855] Linux video capture interface: v2.00

[    3.435199] Bluetooth: Core ver 2.22

[    3.435220] NET: Registered protocol family 31

[    3.435220] Bluetooth: HCI device and connection manager initialized

[    3.435223] Bluetooth: HCI socket layer initialized

[    3.435225] Bluetooth: L2CAP socket layer initialized

[    3.435230] Bluetooth: SCO socket layer initialized

[    3.440625] usbcore: registered new interface driver btusb

[    3.441768] dm9601 2-1:1.0 eth0: register 'dm9601' at usb-0000:00:14.0-1, Davicom DM96xx USB 10/100 Ethernet, 00:e0:4c:53:44:58

[    3.441862] usbcore: registered new interface driver dm9601

[    3.442095] uvcvideo: Found UVC 1.00 device Integrated_Webcam_HD (0bda:5682)

[    3.443756] usbcore: registered new interface driver sr9700

[    3.445335] dm9601 2-1:1.0 enp0s20u1: renamed from eth0

[    3.451777] uvcvideo 2-5:1.0: Entity type for entity Extension 4 was not initialized!

[    3.451778] uvcvideo 2-5:1.0: Entity type for entity Extension 7 was not initialized!

[    3.451779] uvcvideo 2-5:1.0: Entity type for entity Processing 2 was not initialized!

[    3.451780] uvcvideo 2-5:1.0: Entity type for entity Camera 1 was not initialized!

[    3.451844] input: Integrated_Webcam_HD as /devices/pci0000:00/0000:00:14.0/usb2/2-5/2-5:1.0/input/input18

[    3.451903] usbcore: registered new interface driver uvcvideo

[    3.451904] USB Video Class driver (1.1.1)

[    3.559500] Bluetooth: hci0: BCM: chip id 63

[    3.575523] Bluetooth: hci0: BCM20702A

[    3.576508] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000

[    3.990327] Console: switching to colour frame buffer device 240x67

[    4.011534] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device

[    4.050380] input: HDA Intel HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.0/sound/card0/input19

[    4.050444] input: HDA Intel HDMI HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:03.0/sound/card0/input20

[    4.050503] input: HDA Intel HDMI HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:03.0/sound/card0/input21

[    4.050562] input: HDA Intel HDMI HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:03.0/sound/card0/input22

[    4.050649] input: HDA Intel HDMI HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:03.0/sound/card0/input23

[    4.164982] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[    4.164984] Bluetooth: BNEP filters: protocol multicast

[    4.164988] Bluetooth: BNEP socket layer initialized

[    4.338501] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1572

[    4.354498] Bluetooth: hci0: DW1560 Bluetooth 4.0 LE

[    4.645255] IPv6: ADDRCONF(NETDEV_UP): enp0s20u1: link is not ready

[    4.689285] dm9601 2-1:1.0 enp0s20u1: link up, 100Mbps, full-duplex, lpa 0xFFFF

[    4.756496] dm9601 2-1:1.0 enp0s20u1: kevent 4 may have been dropped

[    4.762065] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready

[    4.767490] dm9601 2-1:1.0 enp0s20u1: kevent 4 may have been dropped

[    4.799684] dm9601 2-1:1.0 enp0s20u1: link up, 100Mbps, full-duplex, lpa 0xFFFF

[    4.887666] dm9601 2-1:1.0 enp0s20u1: link up, 100Mbps, full-duplex, lpa 0xFFFF

[    6.711458] Bluetooth: RFCOMM TTY layer initialized

[    6.711466] Bluetooth: RFCOMM socket layer initialized

[    6.711475] Bluetooth: RFCOMM ver 1.11

[    7.450784] TCP: request_sock_TCP: Possible SYN flooding on port 45265. Sending cookies.  Check SNMP counters.

[   15.633644] fuse init (API version 7.26)

You can start by identifying the soundcard with lspci -nn, identifying the loaded sound modules with lsmod, looking for the name of the Codec chip in /proc/asound/card*/codec#*, and generally reading the dmesg output after boot to get an idea what hardware you have.

So far, I've never seen any laptop or desktop that uses I2S to connect a codec - that's done in embedded systems, if at all. So it's a pretty safe bet that you have a HDA card.

Edit

Your soundcards are

00:03.0 Audio device [0403]: Intel Corporation Broadwell-U Audio Controller [8086:160c] (rev 09)

00:1b.0 Audio device [0403]: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0] (rev 03)

According to the Wiki page you linked, the first soundcard should show up as broadwell-rt286 ALSA device in I2S mode (which is decided upon boot by ACPI). So check cat /proc/asound/cards, but my guess is that "Broadwell-U" is not the same as "Broadwell RT286", even as PCI description.

Quick googling finds this to show what I2S usage would look like: You have a bunch of active snd_soc_* modules (soc = system on a chip, I said it's normally only used in embedded devices) in addition to the snd_hda_* modules which drive the remaining HDA HDMI soundcard, and you have the corresponding broadwell-audio and haswell-pcm-audio messages in dmesg. As you have none of these, my guess is still "HDA", but you didn't provide enough information to decide.

If you find this all still confusing, please put the full output of dmesg after boot, the output of cat /proc/asound/cards, the output of lsmod, the output of cat /proc/asound/card*/codec#* into a pastebin or similar, and edit your question with the link.