Re: kern/55130: audio sometimes plays a buzz sound for a few seconds when changing volume

To: kern-bug-people%netbsd.org@localhost,gnats-admin%netbsd.org@localhost,netbsd-bugs%netbsd.org@localhost,coypu%sdf.org@localhost
Subject: Re: kern/55130: audio sometimes plays a buzz sound for a few seconds when changing volume
From: coypu%sdf.org@localhost
Date: Sat, 4 Apr 2020 18:15:02 +0000 (UTC)
The following reply was made to PR kern/55130; it has been noted by GNATS.

From: coypu%sdf.org@localhost
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/55130: audio sometimes plays a buzz sound for a few seconds
 when changing volume
Date: Sat, 4 Apr 2020 18:12:39 +0000

 >  Please show your
 >  - dmesg
 >  - audiocfg list
 >  - sysctl hw.audio*
 
 Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
     2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
     2018, 2019, 2020 The NetBSD Foundation, Inc.  All rights reserved.
 Copyright (c) 1982, 1986, 1989, 1991, 1993
     The Regents of the University of California.  All rights reserved.
 
 NetBSD 9.99.51 (GENERIC) #0: Tue Mar 24 22:28:54 IST 2020
 	fly@planets:/cvs/obj/sys/arch/amd64/compile/GENERIC
 total memory = 16318 MB
 avail memory = 15789 MB
 sysctl_createv: sysctl_locate(maxtypenum) returned 2
 pool redzone disabled for 'buf4k'
 pool redzone disabled for 'buf64k'
 cpu_rng: RDSEED
 timecounter: Timecounters tick every 10.000 msec
 Kernelized RAIDframe activated
 running cgd selftest aes-xts-256 aes-xts-512 done
 timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
 System manufacturer System Product Name (System Version)
 mainbus0 (root)
 ACPI: RSDP 0x00000000000F05B0 000024 (v02 ALASKA)
 ACPI: XSDT 0x00000000D54D3098 0000A4 (v01 ALASKA A M I    01072009 AMI  00010013)
 ACPI: FACP 0x00000000D54DE490 000114 (v06 ALASKA A M I    01072009 AMI  00010013)
 Firmware Warning (ACPI): Optional FADT field Pm2ControlBlock has valid Length but zero Address: 0x0000000000000000/0x1 (20191213/tbfadt-693)
 ACPI: DSDT 0x00000000D54D31D0 00B2BB (v02 ALASKA A M I    01072009 INTL 20120913)
 ACPI: FACS 0x00000000DADC3D80 000040
 ACPI: APIC 0x00000000D54DE5A8 0000DE (v03 ALASKA A M I    01072009 AMI  00010013)
 ACPI: FPDT 0x00000000D54DE688 000044 (v01 ALASKA A M I    01072009 AMI  00010013)
 ACPI: FIDT 0x00000000D54DE6D0 00009C (v01 ALASKA A M I    01072009 AMI  00010013)
 ACPI: SSDT 0x00000000D54EF1A8 0000BF (v01 AMD    AMD PT   00001000 INTL 20120913)
 ACPI: SSDT 0x00000000D54DE7C8 008C98 (v02 AMD    AMD ALIB 00000002 MSFT 04000000)
 ACPI: SSDT 0x00000000D54E7460 002314 (v01 AMD    AMD CPU  00000001 AMD  00000001)
 ACPI: CRAT 0x00000000D54E9778 000F50 (v01 AMD    AMD CRAT 00000001 AMD  00000001)
 ACPI: CDIT 0x00000000D54EA6C8 000029 (v01 AMD    AMD CDIT 00000001 AMD  00000001)
 ACPI: SSDT 0x00000000D54EA6F8 002DA8 (v01 AMD    AMD AOD  00000001 INTL 20120913)
 ACPI: MCFG 0x00000000D54ED4A0 00003C (v01 ALASKA A M I    01072009 MSFT 00010013)
 ACPI: HPET 0x00000000D54ED4E0 000038 (v01 ALASKA A M I    01072009 AMI  00000005)
 ACPI: SSDT 0x00000000D54ED518 000024 (v01 AMDFCH FCHZP    00001000 INTL 20120913)
 ACPI: UEFI 0x00000000D54ED540 000042 (v01                 00000000      00000000)
 ACPI: IVRS 0x00000000D54ED588 0000D0 (v02 AMD    AMD IVRS 00000001 AMD  00000000)
 ACPI: SSDT 0x00000000D54ED658 001B4E (v01 AMD    AmdTable 00000001 INTL 20120913)
 ACPI: 7 ACPI AML tables successfully acquired and loaded
 ioapic0 at mainbus0 apid 17: pa 0xfec00000, version 0x21, 24 pins
 ioapic0: autoconfiguration error: can't remap to apid 17
 ioapic1 at mainbus0 apid 18: pa 0xfec01000, version 0x21, 32 pins
 ioapic1: autoconfiguration error: can't remap to apid 18
 cpu0 at mainbus0 apid 0
 cpu0: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu0: node 0, package 0, core 0, smt 0
 cpu1 at mainbus0 apid 1
 cpu1: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu1: node 0, package 0, core 0, smt 1
 cpu2 at mainbus0 apid 2
 cpu2: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu2: node 0, package 0, core 1, smt 0
 cpu3 at mainbus0 apid 3
 cpu3: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu3: node 0, package 0, core 1, smt 1
 cpu4 at mainbus0 apid 4
 cpu4: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu4: node 0, package 0, core 2, smt 0
 cpu5 at mainbus0 apid 5
 cpu5: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu5: node 0, package 0, core 2, smt 1
 cpu6 at mainbus0 apid 6
 cpu6: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu6: node 0, package 0, core 3, smt 0
 cpu7 at mainbus0 apid 7
 cpu7: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu7: node 0, package 0, core 3, smt 1
 cpu8 at mainbus0 apid 8
 cpu8: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu8: node 0, package 0, core 4, smt 0
 cpu9 at mainbus0 apid 9
 cpu9: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu9: node 0, package 0, core 4, smt 1
 cpu10 at mainbus0 apid 10
 cpu10: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu10: node 0, package 0, core 5, smt 0
 cpu11 at mainbus0 apid 11
 cpu11: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu11: node 0, package 0, core 5, smt 1
 cpu12 at mainbus0 apid 12
 cpu12: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu12: node 0, package 0, core 6, smt 0
 cpu13 at mainbus0 apid 13
 cpu13: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu13: node 0, package 0, core 6, smt 1
 cpu14 at mainbus0 apid 14
 cpu14: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu14: node 0, package 0, core 7, smt 0
 cpu15 at mainbus0 apid 15
 cpu15: AMD Ryzen 7 2700X Eight-Core Processor         , id 0x800f82
 cpu15: node 0, package 0, core 7, smt 1
 acpi0 at mainbus0: Intel ACPICA 20191213
 acpi0: X/RSDT: OemId <ALASKA,  A M I ,01072009>, AslId <AMI ,00010013>
 acpi0: MCFG: segment 0, bus 0-63, address 0x00000000f8000000
 acpi0: SCI interrupting at int 9
 acpi0: fixed power button present
 timecounter: Timecounter "ACPI-Fast" frequency 3579545 Hz quality 1000
 hpet0 at acpi0: high precision event timer (mem 0xfed00000-0xfed00400)
 timecounter: Timecounter "hpet0" frequency 14318180 Hz quality 2000
 AMDN (PNP0C01) at acpi0 not configured
 IOMA (PNP0C02) at acpi0 not configured
 APSP (PNP0C02) at acpi0 not configured
 attimer1 at acpi0 (TMR, PNP0100): io 0x40-0x43 irq 0
 pcppi1 at acpi0 (SPKR, PNP0800): io 0x61
 spkr0 at pcppi1: PC Speaker
 wsbell at spkr0 not configured
 midi0 at pcppi1: PC speaker
 sysbeep0 at pcppi1
 SIO1 (PNP0C02) at acpi0 not configured
 UAR1 (PNP0501) at acpi0 not configured
 S900 (PNP0C02) at acpi0 not configured
 acpibut0 at acpi0 (PWRB, PNP0C0C-170): ACPI Power Button
 GPIO (AMDI0030) at acpi0 not configured
 PTIO (AMDIF030) at acpi0 not configured
 AWR0 (PNP0C02) at acpi0 not configured
 ABR0 (PNP0C02) at acpi0 not configured
 ABR1 (PNP0C02) at acpi0 not configured
 ABR2 (PNP0C02) at acpi0 not configured
 ABR3 (PNP0C02) at acpi0 not configured
 ABR4 (PNP0C02) at acpi0 not configured
 ABR5 (PNP0C02) at acpi0 not configured
 ABR6 (PNP0C02) at acpi0 not configured
 ABR7 (PNP0C02) at acpi0 not configured
 AWR1 (PNP0C02) at acpi0 not configured
 ABR8 (PNP0C02) at acpi0 not configured
 ABR9 (PNP0C02) at acpi0 not configured
 ABRA (PNP0C02) at acpi0 not configured
 ABRB (PNP0C02) at acpi0 not configured
 ABRC (PNP0C02) at acpi0 not configured
 ABRD (PNP0C02) at acpi0 not configured
 ABRE (PNP0C02) at acpi0 not configured
 ABRF (PNP0C02) at acpi0 not configured
 acpiwmi0 at acpi0 (AMW0, PNP0C14-ASUSWMI): ACPI WMI Interface
 wmieeepc0 at acpiwmi0: Asus Eee PC WMI mappings
 acpiwmi1 at acpi0 (AOD, PNP0C14-AOD): ACPI WMI Interface
 acpiwmibus at acpiwmi1 not configured
 attimer1: attached to pcppi1
 pci0 at mainbus0 bus 0: configuration mode 1
 pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
 amdsmn0 at pci0 dev 0 function 0: AMD Family 17h System Management Network
 amdzentemp0 at amdsmn0: AMD CPU Temperature Sensors (Family17h)
 AMD Family17h IOMMU (IOMMU system) at pci0 dev 0 function 2 not configured
 pchb0 at pci0 dev 1 function 0: AMD Family17h PCIe (rev. 0x00)
 ppb0 at pci0 dev 1 function 1: AMD Family17h PCIe (rev. 0x00)
 ppb0: PCI Express capability version 2 <Root Port of PCI-E Root Complex> x4 @ 8.0GT/s
 pci1 at ppb0 bus 1
 pci1: i/o space, memory space enabled, rd/line, wr/inv ok
 nvme0 at pci1 dev 0 function 0: Samsung Electronics (3rd vendor ID) product a808 (rev. 0x00)
 nvme0: NVMe 1.3
 nvme0: for admin queue interrupting at msix0 vec 0
 nvme0: Samsung SSD 970 EVO 250GB, firmware 2B2QEXE7, serial S465NX0KB19070D
 nvme0: for io queue 1 interrupting at msix0 vec 1 affinity to cpu0
 nvme0: for io queue 2 interrupting at msix0 vec 2 affinity to cpu1
 nvme0: for io queue 3 interrupting at msix0 vec 3 affinity to cpu2
 nvme0: for io queue 4 interrupting at msix0 vec 4 affinity to cpu3
 nvme0: for io queue 5 interrupting at msix0 vec 5 affinity to cpu4
 nvme0: for io queue 6 interrupting at msix0 vec 6 affinity to cpu5
 nvme0: for io queue 7 interrupting at msix0 vec 7 affinity to cpu6
 nvme0: for io queue 8 interrupting at msix0 vec 8 affinity to cpu7
 nvme0: for io queue 9 interrupting at msix0 vec 9 affinity to cpu8
 nvme0: for io queue 10 interrupting at msix0 vec 10 affinity to cpu9
 nvme0: for io queue 11 interrupting at msix0 vec 11 affinity to cpu10
 nvme0: for io queue 12 interrupting at msix0 vec 12 affinity to cpu11
 nvme0: for io queue 13 interrupting at msix0 vec 13 affinity to cpu12
 nvme0: for io queue 14 interrupting at msix0 vec 14 affinity to cpu13
 nvme0: for io queue 15 interrupting at msix0 vec 15 affinity to cpu14
 nvme0: for io queue 16 interrupting at msix0 vec 16 affinity to cpu15
 ld0 at nvme0 nsid 1
 ld0: 232 GB, 30401 cyl, 255 head, 63 sec, 512 bytes/sect x 488397168 sectors
 ppb1 at pci0 dev 1 function 3: AMD Family17h PCIe (rev. 0x00)
 ppb1: PCI Express capability version 2 <Root Port of PCI-E Root Complex> x4 @ 8.0GT/s
 pci2 at ppb1 bus 2
 pci2: i/o space, memory space enabled, rd/line, wr/inv ok
 xhci0 at pci2 dev 0 function 0: AMD product 43d5 (rev. 0x01)
 xhci0: interrupting at msix1 vec 0
 xhci0: xHCI version 1.10
 usb0 at xhci0: USB revision 3.1
 usb1 at xhci0: USB revision 2.0
 ahcisata0 at pci2 dev 0 function 1: AMD 400 Series AHCI (rev. 0x01)
 ahcisata0: 64-bit DMA
 ahcisata0: AHCI revision 1.31, 8 ports, 32 slots, CAP 0xef36ff27<SXS,PSC,SSC,PMD,SPM,SAM,ISS=0x3=Gen3,SCLO,SAL,SALP,SSS,SSNTF,SNCQ,S64A>
 ahcisata0: interrupting at msi2 vec 0
 atabus0 at ahcisata0 channel 0
 atabus1 at ahcisata0 channel 1
 atabus2 at ahcisata0 channel 4
 atabus3 at ahcisata0 channel 5
 ppb2 at pci2 dev 0 function 2: AMD 400 Series PCIe (rev. 0x01)
 ppb2: PCI Express capability version 2 <Upstream Port of PCI-E Switch>
 pci3 at ppb2 bus 3
 pci3: i/o space, memory space enabled, rd/line, wr/inv ok
 ppb3 at pci3 dev 0 function 0: AMD 400 Series PCIe (rev. 0x01)
 ppb3: PCI Express capability version 2 <Downstream Port of PCI-E Switch> x2 @ 5.0GT/s
 pci4 at ppb3 bus 4
 pci4: i/o space, memory space enabled, rd/line, wr/inv ok
 ppb4 at pci3 dev 4 function 0: AMD 400 Series PCIe (rev. 0x01)
 ppb4: PCI Express capability version 2 <Downstream Port of PCI-E Switch> x1 @ 5.0GT/s
 pci5 at ppb4 bus 5
 pci5: i/o space, memory space enabled, rd/line, wr/inv ok
 ppb5 at pci3 dev 5 function 0: AMD 400 Series PCIe (rev. 0x01)
 ppb5: PCI Express capability version 2 <Downstream Port of PCI-E Switch> x1 @ 5.0GT/s
 pci6 at ppb5 bus 6
 pci6: i/o space, memory space enabled, rd/line, wr/inv ok
 ppb6 at pci3 dev 6 function 0: AMD 400 Series PCIe (rev. 0x01)
 ppb6: PCI Express capability version 2 <Downstream Port of PCI-E Switch> x1 @ 5.0GT/s
 pci7 at ppb6 bus 7
 pci7: i/o space, memory space enabled, rd/line, wr/inv ok
 ppb7 at pci3 dev 7 function 0: AMD 400 Series PCIe (rev. 0x01)
 ppb7: PCI Express capability version 2 <Downstream Port of PCI-E Switch> x1 @ 5.0GT/s
 ppb7: link is x1 @ 2.5GT/s
 pci8 at ppb7 bus 8
 pci8: i/o space, memory space enabled, rd/line, wr/inv ok
 re0 at pci8 dev 0 function 0: RealTek 8168/8111 PCIe Gigabit Ethernet (rev. 0x15)
 re0: interrupting at msix3 vec 0
 re0: Ethernet address 40:b0:76:0c:7d:c7
 re0: using 256 tx descriptors
 rgephy0 at re0 phy 7: RTL8251 1000BASE-T media interface, rev. 0
 rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT-FDX, auto
 pchb1 at pci0 dev 2 function 0: AMD Family17h PCIe (rev. 0x00)
 pchb2 at pci0 dev 3 function 0: AMD Family17h PCIe (rev. 0x00)
 ppb8 at pci0 dev 3 function 1: AMD Family17h PCIe (rev. 0x00)
 ppb8: PCI Express capability version 2 <Root Port of PCI-E Root Complex> x16 @ 8.0GT/s
 ppb8: link is x16 @ 2.5GT/s
 pci9 at ppb8 bus 9
 pci9: i/o space, memory space enabled, rd/line, wr/inv ok
 nouveau0 at pci9 dev 0 function 0: NVIDIA product 1184 (rev. 0xa1)
 hdaudio0 at pci9 dev 0 function 1: HD Audio Controller
 hdaudio0: interrupting at msi4 vec 0
 hdaudio0: HDA ver. 1.0, OSS 4, ISS 4, BSS 0, SDO 4, 64-bit
 hdafg0 at hdaudio0: vendor 10de product 0040
 hdafg0: DP00 8ch: Digital Out [Jack]
 hdafg0: DP01 8ch: Digital Out [Jack]
 hdafg0: DP02 8ch: Digital Out [Jack]
 hdafg0: DP03 8ch: Digital Out [Jack]
 hdafg0: 8ch/0ch 48000Hz PCM16*
 pchb3 at pci0 dev 4 function 0: AMD Family17h PCIe (rev. 0x00)
 pchb4 at pci0 dev 7 function 0: AMD Family17h PCIe (rev. 0x00)
 ppb9 at pci0 dev 7 function 1: AMD Family17h PCIe (rev. 0x00)
 ppb9: PCI Express capability version 2 <Root Port of PCI-E Root Complex> x16 @ 8.0GT/s
 pci10 at ppb9 bus 10
 pci10: i/o space, memory space enabled, rd/line, wr/inv ok
 AMD Family17h PCIe Dummy Function (non-essential instrumentation, subclass 0x00) at pci10 dev 0 function 0 not configured
 AMD Family17h Crypto (miscellaneous crypto) at pci10 dev 0 function 2 not configured
 xhci1 at pci10 dev 0 function 3: AMD Family17h xHCI (rev. 0x00)
 xhci1: interrupting at msix5 vec 0
 xhci1: xHCI version 1.0
 usb2 at xhci1: USB revision 3.0
 usb3 at xhci1: USB revision 2.0
 pchb5 at pci0 dev 8 function 0: AMD Family17h PCIe (rev. 0x00)
 ppb10 at pci0 dev 8 function 1: AMD Family17h PCIe (rev. 0x00)
 ppb10: PCI Express capability version 2 <Root Port of PCI-E Root Complex> x16 @ 8.0GT/s
 pci11 at ppb10 bus 11
 pci11: i/o space, memory space enabled, rd/line, wr/inv ok
 AMD product 1455 (non-essential instrumentation, subclass 0x00) at pci11 dev 0 function 0 not configured
 ahcisata1 at pci11 dev 0 function 2: AMD FCH AHCI (rev. 0x51)
 ahcisata1: 64-bit DMA
 ahcisata1: AHCI revision 1.31, 1 port, 32 slots, CAP 0xf737ff00<PSC,SSC,PMD,FBSS,SPM,SAM,ISS=0x3=Gen3,SCLO,SAL,SALP,SMPS,SSNTF,SNCQ,S64A>
 ahcisata1: interrupting at msi6 vec 0
 atabus4 at ahcisata1 channel 0
 hdaudio1 at pci11 dev 0 function 3: HD Audio Controller
 hdaudio1: interrupting at msi7 vec 0
 hdaudio1: HDA ver. 1.0, OSS 4, ISS 4, BSS 0, SDO 1, 64-bit
 hdafg1 at hdaudio1: vendor 10ec product 0887
 hdafg1: DAC00 2ch: Speaker [Jack]
 hdafg1: DAC01 2ch: HP Out [Jack]
 hdafg1: DIG02 2ch: SPDIF Out [Built-In]
 hdafg1: ADC03 2ch: Line In [Jack], Mic In [Jack]
 hdafg1: ADC04 2ch: Mic In [Jack]
 hdafg1: 2ch/2ch 32000Hz 44100Hz 48000Hz 88200Hz 96000Hz 192000Hz PCM16 PCM20 PCM24 AC3
 audio0 at hdafg1: playback, capture, full duplex, independent
 audio0: slinear_le:16 2ch 48000Hz, blk 4ms for playback
 audio0: slinear_le:16 2ch 48000Hz, blk 4ms for recording
 spkr1 at audio0: PC Speaker (synthesized)
 wsbell at spkr1 not configured
 piixpm0 at pci0 dev 20 function 0: AMD X370/X399 SMBus Controller (rev. 0x59)
 piixpm0: interrupting at SMI, 
 iic0 at piixpm0 port 0: I2C bus
 iic1 at piixpm0 port 1: I2C bus
 pcib0 at pci0 dev 20 function 3: AMD FCH LPC (rev. 0x51)
 pchb6 at pci0 dev 24 function 0: AMD Family17h Data Fabric (rev. 0x00)
 pchb7 at pci0 dev 24 function 1: AMD Family17h Data Fabric (rev. 0x00)
 pchb8 at pci0 dev 24 function 2: AMD Family17h Data Fabric (rev. 0x00)
 pchb9 at pci0 dev 24 function 3: AMD Family17h Data Fabric (rev. 0x00)
 pchb10 at pci0 dev 24 function 4: AMD Family17h Data Fabric (rev. 0x00)
 pchb11 at pci0 dev 24 function 5: AMD Family17h Data Fabric (rev. 0x00)
 pchb12 at pci0 dev 24 function 6: AMD Family17h Data Fabric (rev. 0x00)
 pchb13 at pci0 dev 24 function 7: AMD Family17h Data Fabric (rev. 0x00)
 isa0 at pcib0
 com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
 pckbc0 at isa0 port 0x60-0x64
 acpicpu0 at cpu0: ACPI CPU
 acpicpu0: C1: FFH, lat   1 us, pow     0 mW
 acpicpu0: C2: I/O, lat 400 us, pow     0 mW
 acpicpu0: P0: FFH, lat   1 us, pow  4486 mW, 3700 MHz
 acpicpu0: P1: FFH, lat   1 us, pow  3180 mW, 3200 MHz
 acpicpu0: P2: FFH, lat   1 us, pow  1787 mW, 2200 MHz
 acpicpu0: T0: I/O, lat   1 us, pow     0 mW, 100 %
 acpicpu0: T1: I/O, lat   1 us, pow     0 mW,  88 %
 acpicpu0: T2: I/O, lat   1 us, pow     0 mW,  76 %
 acpicpu0: T3: I/O, lat   1 us, pow     0 mW,  64 %
 acpicpu0: T4: I/O, lat   1 us, pow     0 mW,  52 %
 acpicpu0: T5: I/O, lat   1 us, pow     0 mW,  40 %
 acpicpu0: T6: I/O, lat   1 us, pow     0 mW,  28 %
 acpicpu0: T7: I/O, lat   1 us, pow     0 mW,  16 %
 acpicpu1 at cpu1: ACPI CPU
 acpicpu2 at cpu2: ACPI CPU
 acpicpu3 at cpu3: ACPI CPU
 acpicpu4 at cpu4: ACPI CPU
 acpicpu5 at cpu5: ACPI CPU
 acpicpu6 at cpu6: ACPI CPU
 acpicpu7 at cpu7: ACPI CPU
 acpicpu8 at cpu8: ACPI CPU
 acpicpu9 at cpu9: ACPI CPU
 acpicpu10 at cpu10: ACPI CPU
 acpicpu11 at cpu11: ACPI CPU
 acpicpu12 at cpu12: ACPI CPU
 acpicpu13 at cpu13: ACPI CPU
 acpicpu14 at cpu14: ACPI CPU
 acpicpu15 at cpu15: ACPI CPU
 timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
 autoconfiguration error: ERROR: 334 cycle TSC drift observed
 uhub0 at usb0: NetBSD (0x0000) xHCI root hub (0x0000), class 9/0, rev 3.00/1.00, addr 0
 uhub0: 4 ports with 4 removable, self powered
 uhub1 at usb1: NetBSD (0x0000) xHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 0
 uhub1: 10 ports with 10 removable, self powered
 uhub2 at usb2: NetBSD (0x0000) xHCI root hub (0x0000), class 9/0, rev 3.00/1.00, addr 0
 uhub2: 4 ports with 4 removable, self powered
 uhub3 at usb3: NetBSD (0x0000) xHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 0
 uhub3: 4 ports with 4 removable, self powered
 ld0: GPT GUID: 98fbdcac-1575-4477-be1c-49816ce19a11
 dk0 at ld0: "EFI system", 262144 blocks at 4096, type: msdos
 dk1 at ld0: "NetBSD", 419430400 blocks at 266240, type: ffs
 dk2 at ld0: "swap", 68698112 blocks at 419696640, type: swap
 IPsec: Initialized Security Association Processing.
 ahcisata0 port 1: device present, speed: 6.0Gb/s
 wd0 at atabus1 drive 0
 wd0: <TOSHIBA Q300>
 wd0: drive supports 16-sector PIO transfers, LBA48 addressing
 wd0: 111 GB, 232581 cyl, 16 head, 63 sec, 512 bytes/sect x 234441648 sectors
 wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133), WRITE DMA FUA, NCQ (32 tags)
 wd0(ahcisata0:1:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA), NCQ (31 tags)
 uhidev0 at uhub3 port 3 configuration 1 interface 0
 uhidev0: Logitech (0x046d) USB-PS/2 Optical Mouse (0xc051), rev 2.00/30.00, addr 1, iclass 3/1
 ums0 at uhidev0: 8 buttons and Z dir
 wsmouse0 at ums0 mux 0
 uhidev1 at uhub3 port 4 configuration 1 interface 0
 uhidev1: KINESIS FREESTYLE KB800 (0x058f) KB800 Kinesis Freestyle (0x9410), rev 1.10/1.22, addr 2, iclass 3/1
 ukbd0 at uhidev1: 8 Variable keys, 6 Array codes
 wskbd0 at ukbd0: console keyboard
 uhidev2 at uhub3 port 4 configuration 1 interface 1
 uhidev2: KINESIS FREESTYLE KB800 (0x058f) KB800 Kinesis Freestyle (0x9410), rev 1.10/1.22, addr 2, iclass 3/0
 uhidev2: 3 report ids
 uhid0 at uhidev2 reportid 2: input=1, output=0, feature=0
 uhid1 at uhidev2 reportid 3: input=2, output=0, feature=0
 WARNING: 3 errors while detecting hardware; check system log.
 boot device: wd0
 root on wd0a dumps on wd0b
 root file system type: ffs
 kern.module.path=/stand/amd64/9.99.51/modules
 nouveau0: info: NVIDIA GK104 (0e4040a2)
 nouveau0: info: bios: version 80.04.b4.00.10
 allocated pic msi8 type edge pin 0 level 6 to cpu1 slot 1 idt entry 121
 nouveau0: interrupting at msi8 vec 0 (nouveau0)
 nouveau0: info: fb: 2048 MiB GDDR5
 Zone  kernel: Available graphics memory: 5336946 kiB
 Zone   dma32: Available graphics memory: 2097152 kiB
 nouveau0: info: DRM: VRAM: 2048 MiB
 nouveau0: info: DRM: GART: 1048576 MiB
 nouveau0: info: DRM: TMDS table version 2.0
 nouveau0: info: DRM: DCB version 4.0
 nouveau0: info: DRM: DCB outp 00: 01000f02 00020030
 nouveau0: info: DRM: DCB outp 01: 02000f00 00000000
 nouveau0: info: DRM: DCB outp 02: 08011f82 00020030
 nouveau0: info: DRM: DCB outp 03: 02022f62 00020010
 nouveau0: info: DRM: DCB outp 04: 04833fb6 0f420010
 nouveau0: info: DRM: DCB outp 05: 04033f72 00020010
 nouveau0: info: DRM: DCB conn 00: 00001030
 nouveau0: info: DRM: DCB conn 01: 01000131
 nouveau0: info: DRM: DCB conn 02: 00010261
 nouveau0: info: DRM: DCB conn 03: 00020346
 kern info: [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
 kern info: [drm] Driver supports precise vblank timestamp query.
 nouveau0: info: DRM: MM: using COPY for buffer copies
 nouveaufb0 at nouveau0
 nouveaufb0: framebuffer at 0xffff9581501d5000, size 1440x900, depth 32, stride 5888
 no data for est. mode 640x480x67
 wsdisplay0 at nouveaufb0 kbdmux 1: console (default, vt100 emulation), using wskbd0
 wsmux1: connecting to wsdisplay0
 nouveau0: autoconfiguration error: error: disp: chid 1 mthd 0080 data 00000000 00005080 0000000d
 nouveau0: info: disp: Base 1:
 nouveau0: info: disp: 	0080: 00000000              
 nouveau0: info: disp: 	0084: 00000000 -> 00000010
 nouveau0: info: disp: 	0088: 00000000 -> 00000100
 nouveau0: info: disp: 	008c: 00000000              
 nouveau0: info: disp: 	0090: 00000000 -> 00000001
 nouveau0: info: disp: 	0094: 00000000 -> f0000000
 nouveau0: info: disp: 	00a0: 00000000              
 nouveau0: info: disp: 	00a4: 00000000              
 nouveau0: info: disp: 	00c0: 00000000 -> ffff0000
 nouveau0: info: disp: 	00c4: 00000000              
 nouveau0: info: disp: 	00c8: 00000000              
 nouveau0: info: disp: 	00cc: 00000000              
 nouveau0: info: disp: 	00e0: 00000000 -> 40000000
 nouveau0: info: disp: 	00e4: 00000000              
 nouveau0: info: disp: 	00e8: 00000000              
 nouveau0: info: disp: 	00ec: 00000000              
 nouveau0: info: disp: 	00fc: 00000000              
 nouveau0: info: disp: 	0100: fffe0000              
 nouveau0: info: disp: 	0104: 00000000              
 nouveau0: info: disp: 	0108: 18131813              
 nouveau0: info: disp: 	010c: f0000000              
 nouveau0: info: disp: 	0110: 00000000              
 nouveau0: info: disp: 	0114: 00000000              
 nouveau0: info: disp: 	0118: 00000000              
 nouveau0: info: disp: 	011c: 00000000              
 nouveau0: info: disp: 	0130: 00000000              
 nouveau0: info: disp: 	0134: 00000000              
 nouveau0: info: disp: 	0138: 00000000              
 nouveau0: info: disp: 	013c: 00000000              
 nouveau0: info: disp: 	0140: 00010000              
 nouveau0: info: disp: 	0144: 00000000              
 nouveau0: info: disp: 	0148: 00000000              
 nouveau0: info: disp: 	014c: 00000000              
 nouveau0: info: disp: 	0150: 00000000              
 nouveau0: info: disp: 	0154: 00010000              
 nouveau0: info: disp: 	0158: 00000000              
 nouveau0: info: disp: 	015c: 00000000              
 nouveau0: info: disp: 	0160: 00000000              
 nouveau0: info: disp: 	0164: 00000000              
 nouveau0: info: disp: 	0168: 00010000              
 nouveau0: info: disp: 	016c: 00000000              
 nouveau0: info: disp: Base 1 - Image 0:
 nouveau0: info: disp: 	0400: 00000000 -> 00000600
 nouveau0: info: disp: 	0404: 00000000              
 nouveau0: info: disp: 	0408: 00000000 -> 038405a0
 nouveau0: info: disp: 	040c: 00000000 -> 01001700
 nouveau0: info: disp: 	0410: 0000e900 -> 0000cf00
 nouveau0: info: disp: Base 1 - Image 1:
 nouveau0: info: disp: 	0420: 00000000              
 nouveau0: info: disp: 	0424: 00000000              
 nouveau0: info: disp: 	0428: 00000000              
 nouveau0: info: disp: 	042c: 00000000              
 nouveau0: info: disp: 	0430: 0000e900              
 no data for est. mode 640x480x67
 wsdisplay0: screen 1 added (default, vt100 emulation)
 no data for est. mode 640x480x67
 wsdisplay0: screen 2 added (default, vt100 emulation)
 no data for est. mode 640x480x67
 wsdisplay0: screen 3 added (default, vt100 emulation)
 no data for est. mode 640x480x67
 wsdisplay0: screen 4 added (default, vt100 emulation)
 WARNING: ZFS on NetBSD is under development
 ZFS filesystem version: 5
 umodem0 at uhub3 port 1 configuration 2 interface 1
 umodem0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6860), rev 2.00/4.00, addr 3, iclass 2/2
 umodem0: data interface 2, has no CM over data, has no break
 umodem0: status change notification available
 ucom0 at umodem0
 ucom0: detached
 umodem0: detached
 umodem0: at uhub3 port 1 (addr 3) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 3
 urndis0: Ethernet address 02:20:64:68:78:79
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 urndis0: autoconfiguration error: usb errors on rx: IOERROR
 urndis0: detached
 urndis0: at uhub3 port 1 (addr 3) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 3
 urndis0: Ethernet address 02:20:64:68:78:79
 urndis0: detached
 urndis0: at uhub3 port 1 (addr 3) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 3
 urndis0: Ethernet address 02:20:64:68:78:79
 urndis0: detached
 urndis0: at uhub3 port 1 (addr 3) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 3
 urndis0: Ethernet address 02:20:64:68:78:79
 urndis0: detached
 urndis0: at uhub3 port 1 (addr 3) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 3
 urndis0: Ethernet address 02:20:64:68:78:79
 urndis0: detached
 urndis0: at uhub3 port 1 (addr 3) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 3
 urndis0: Ethernet address 02:20:64:68:78:79
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 wsmouse0: detached
 ums0: detached
 uhidev0: detached
 uhidev0: at uhub3 port 3 (addr 1) disconnected
 uhidev0 at uhub3 port 3 configuration 1 interface 0
 uhidev0: Logitech (0x046d) USB-PS/2 Optical Mouse (0xc051), rev 2.00/30.00, addr 1, iclass 3/1
 ums0 at uhidev0: 8 buttons and Z dir
 wsmouse0 at ums0 mux 0
 ukbd0: was console keyboard
 wskbd0: detached
 ukbd0: detached
 uhidev1: detached
 uhidev1: at uhub3 port 4 (addr 2) disconnected
 uhid0: detached
 uhid1: detached
 uhidev2: detached
 uhidev2: at uhub3 port 4 (addr 2) disconnected
 uhidev1 at uhub3 port 4 configuration 1 interface 0
 uhidev1: KINESIS FREESTYLE KB800 (0x058f) KB800 Kinesis Freestyle (0x9410), rev 1.10/1.22, addr 2, iclass 3/1
 ukbd0 at uhidev1: 8 Variable keys, 6 Array codes
 wskbd0 at ukbd0: console keyboard, using wsdisplay0
 uhidev2 at uhub3 port 4 configuration 1 interface 1
 uhidev2: KINESIS FREESTYLE KB800 (0x058f) KB800 Kinesis Freestyle (0x9410), rev 1.10/1.22, addr 2, iclass 3/0
 uhidev2: 3 report ids
 uhid0 at uhidev2 reportid 2: input=1, output=0, feature=0
 uhid1 at uhidev2 reportid 3: input=2, output=0, feature=0
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 urndis0: autoconfiguration error: usb errors on rx: IOERROR
 urndis0: detached
 urndis0: at uhub3 port 1 (addr 3) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 3
 urndis0: Ethernet address 02:20:64:68:78:79
 urndis0: detached
 urndis0: at uhub3 port 1 (addr 3) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 3
 urndis0: Ethernet address 02:20:64:68:78:79
 wsmouse0: detached
 ums0: detached
 uhidev0: detached
 uhidev0: at uhub3 port 3 (addr 1) disconnected
 ukbd0: was console keyboard
 wskbd0: detached
 ukbd0: detached
 uhidev1: detached
 uhidev1: at uhub3 port 4 (addr 2) disconnected
 uhid0: detached
 uhid1: detached
 uhidev2: detached
 uhidev2: at uhub3 port 4 (addr 2) disconnected
 urndis0: detached
 urndis0: at uhub3 port 1 (addr 3) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 1
 urndis0: Ethernet address 02:20:64:68:78:79
 urndis0: detached
 urndis0: at uhub3 port 1 (addr 1) disconnected
 urndis0 at uhub3 port 1 configuration 1 interface 0
 urndis0: SAMSUNG (0x04e8) SAMSUNG_Android (0x6863), rev 2.00/4.00, addr 1
 urndis0: Ethernet address 02:20:64:68:78:79
 uhidev0 at uhub3 port 3 configuration 1 interface 0
 uhidev0: KINESIS FREESTYLE KB800 (0x058f) KB800 Kinesis Freestyle (0x9410), rev 1.10/1.22, addr 2, iclass 3/1
 ukbd0 at uhidev0: 8 Variable keys, 6 Array codes
 wskbd0 at ukbd0: console keyboard, using wsdisplay0
 uhidev1 at uhub3 port 3 configuration 1 interface 1
 uhidev1: KINESIS FREESTYLE KB800 (0x058f) KB800 Kinesis Freestyle (0x9410), rev 1.10/1.22, addr 2, iclass 3/0
 uhidev1: 3 report ids
 uhid0 at uhidev1 reportid 2: input=1, output=0, feature=0
 uhid1 at uhidev1 reportid 3: input=2, output=0, feature=0
 uhidev2 at uhub3 port 4 configuration 1 interface 0
 uhidev2: Logitech (0x046d) USB-PS/2 Optical Mouse (0xc051), rev 2.00/30.00, addr 3, iclass 3/1
 ums0 at uhidev2: 8 buttons and Z dir
 wsmouse0 at ums0 mux 0
 audio0: device timeout
 audio0: device timeout
 audio0: device timeout
 
 
 ---
 
 0: [*] audio0 @ hdafg1: Realtek ALC887
        playback: 2ch, 48000Hz
        record:   2ch, 48000Hz
        (PR) slinear_le 16/16, 2ch, { 32000, 44100, 48000, 88200, 96000, 192000 }
        (PR) slinear_le 20/32, 2ch, { 32000, 44100, 48000, 88200, 96000, 192000 }
        (PR) slinear_le 24/32, 2ch, { 32000, 44100, 48000, 88200, 96000, 192000 }
        (  ) ac3 16/16, 2ch, { 32000, 44100, 48000, 88200, 96000, 192000 }
 
 ---
 
 hw.audio0.blk_ms = 4
 hw.audio0.multiuser = 0
 
 >  
 >  Please describe details what you did (for example, about keybind
 >  and mixerctl configuration) and how to reproduce.
 >  Since when has the problem existed?
 
 I have bindings that do this:
 
 #!/bin/sh
 mixerctl -w outputs.master-=3
 mixerctl -w outputs.master2-=3
 
 I often run this script, and a similar one for raising volume.
 
 I don't remember when it started being a problem.
 
 >  
 >  > Changing the audio latency made it more likely to reproduce.
 >  
 >  If "Changing the audio latency" means "sysctl -w hw.audio*.blk_ms",
 >  it looks strange to me.  When the blk_ms can be changed, there
 >  should be no audio tracks.  Therefore, audio layer doesn't make
 >  sound at that point.
 
 I am not changing the audio latency while playing.
 It seems to happen more after the audio latency was changed blk_ms -> 4
 
 >  
 >  > My dmesg has a lot of:
 >  > [ 10743.902726] audio0: device timeout
 >  
 >  Just to confirm, are these messages and the reported problem
 >  synchronized?
 
 It seems to be.
Follow-Ups:
- Re: kern/55130: audio sometimes plays a buzz sound for a few seconds when changing volume
  - From: Tetsuya Isaki
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