Hi everyone,
I upgraded packages on my system this morning, and my sound no longer seems to work. The audio devices show 'Dummy Output' instead of the typical 'Built-In Sound Device'. The sound card works fine if I boot into the KDE Neon ISO. Has anyone experienced this before, or have any suggestions on next steps in resolving this? I would rather not re-install my entire system.

Thank you in advance!

Code: Select all

$ aplay -l
aplay: device_list:268: no soundcards found...


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!!################################
!!ALSA Information Script v 0.4.64
!!################################

!!Script ran on: Tue Dec 13 15:16:01 UTC 2016


!!Linux Distribution
!!------------------

ID_LIKE="ubuntu debian" UBUNTU_CODENAME=xenial


!!DMI Information
!!---------------

Manufacturer:      Dell Inc.
Product Name:      XPS 13 9360
Product Version:   
Firmware Version:  1.0.7


!!Kernel Information
!!------------------

Kernel release:    4.4.0-53-generic
Operating System:  GNU/Linux
Architecture:      x86_64
Processor:         x86_64
SMP Enabled:       Yes


!!ALSA Version
!!------------

Driver version:     k4.4.0-53-generic
Library version:   
Utilities version:  1.1.0


!!Loaded ALSA modules
!!-------------------



!!Sound Servers on this system
!!----------------------------

Pulseaudio:
      Installed - Yes (/usr/bin/pulseaudio)
      Running - Yes


!!Soundcards recognised by ALSA
!!-----------------------------

--- no soundcards ---


!!PCI Soundcards installed in the system
!!--------------------------------------



!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!-------------------------------------------------------



!!Modprobe options (Sound related)
!!--------------------------------

snd_pcsp: index=-2
snd_usb_audio: index=-2
snd_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2
snd_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2
snd_usb_audio: index=-2
snd_usb_caiaq: index=-2
snd_usb_ua101: index=-2
snd_usb_us122l: index=-2
snd_usb_usx2y: index=-2
snd_cmipci: mpu_port=0x330 fm_port=0x388
snd_pcsp: index=-2
snd_usb_audio: index=-2


!!Loaded sound module options
!!---------------------------


!!ALSA Device nodes
!!-----------------

crw-rw----  1 root audio 116,  1 Dec 13 09:10 /dev/snd/seq
crw-rw----  1 root audio 116, 33 Dec 13 09:10 /dev/snd/timer


!!Aplay/Arecord output
!!--------------------

APLAY

aplay: device_list:268: no soundcards found...

ARECORD

arecord: device_list:268: no soundcards found...

!!Amixer output
!!-------------


!!Alsactl output
!!--------------

--startcollapse--
--endcollapse--


!!All Loaded Modules
!!------------------

Module
drbg
ansi_cprng
ctr
ccm
rfcomm
arc4
nvram
snd_seq_midi
snd_seq_midi_event
snd_rawmidi
snd_seq
snd_seq_device
snd_timer
snd
soundcore
msr
ipt_MASQUERADE
nf_nat_masquerade_ipv4
xfrm_user
xfrm_algo
iptable_nat
nf_conntrack_ipv4
nf_defrag_ipv4
nf_nat_ipv4
xt_addrtype
iptable_filter
ip_tables
xt_conntrack
x_tables
nf_nat
nf_conntrack
br_netfilter
bridge
stp
llc
aufs
btusb
btrtl
uvcvideo
videobuf2_vmalloc
videobuf2_memops
videobuf2_v4l2
videobuf2_core
v4l2_common
videodev
media
pci_stub
vboxpci
vboxnetadp
vboxnetflt
hid_multitouch
vboxdrv
i2c_designware_platform
i2c_designware_core
dell_wmi
bnep
dell_laptop
dcdbas
ath10k_pci
ath10k_core
ath
x86_pkg_temp_thermal
coretemp
mac80211
kvm_intel
kvm
cfg80211
irqbypass
crct10dif_pclmul
rtsx_pci_ms
crc32_pclmul
memstick
ghash_clmulni_intel
aesni_intel
aes_x86_64
lrw
gf128mul
glue_helper
ablk_helper
cryptd
joydev
input_leds
serio_raw
shpchp
mei_me
idma64
virt_dma
mei
processor_thermal_device
intel_soc_dts_iosf
intel_lpss_pci
hci_uart
btbcm
btqca
btintel
soc_button_array
intel_vbtn
bluetooth
int3403_thermal
intel_lpss_acpi
int340x_thermal_zone
intel_lpss
intel_hid
sparse_keymap
int3400_thermal
acpi_pad
acpi_thermal_rel
tpm_crb
acpi_als
mac_hid
kfifo_buf
industrialio
parport_pc
ppdev
lp
parport
autofs4
usbhid
rtsx_pci_sdmmc
i915_bpo
intel_ips
i2c_algo_bit
drm_kms_helper
syscopyarea
psmouse
sysfillrect
sysimgblt
fb_sys_fops
rtsx_pci
drm
nvme
wmi
i2c_hid
hid
pinctrl_sunrisepoint
video
pinctrl_intel
fjes


!!ALSA/HDA dmesg
!!--------------


Code: Select all

$ pulseaudio -k; pulseaudio -vvvvv
I: [pulseaudio] main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not permitted
I: [pulseaudio] main.c: setrlimit(RLIMIT_RTPRIO, (9, 9)) failed: Operation not permitted
D: [pulseaudio] core-rtclock.c: Timer slack is set to 50 us.
D: [pulseaudio] core-util.c: RealtimeKit worked.
I: [pulseaudio] core-util.c: Successfully gained nice level -11.
I: [pulseaudio] main.c: This is PulseAudio 8.0
D: [pulseaudio] main.c: Compilation host: x86_64-pc-linux-gnu
D: [pulseaudio] main.c: Compilation CFLAGS: -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wall -W -Wextra -pipe -Wno-long-long -Wno-overlength-strings -Wunsafe-loop-optimizations -Wundef -Wformat=2 -Wlogical-op -Wsign-compare -Wformat-security -Wmissing-include-dirs -Wformat-nonliteral -Wpointer-arith -Winit-self -Wdeclaration-after-statement -Wfloat-equal -Wmissing-prototypes -Wredundant-decls -Wmissing-declarations -Wmissing-noreturn -Wshadow -Wendif-labels -Wcast-align -Wstrict-aliasing -Wwrite-strings -Wno-unused-parameter -ffast-math -fno-common -fdiagnostics-show-option -fdiagnostics-color=auto
D: [pulseaudio] main.c: Running on host: Linux x86_64 4.4.0-53-generic #74-Ubuntu SMP Fri Dec 2 15:59:10 UTC 2016
D: [pulseaudio] main.c: Found 4 CPUs.
I: [pulseaudio] main.c: Page size is 4096 bytes
D: [pulseaudio] main.c: Compiled with Valgrind support: no
D: [pulseaudio] main.c: Running in valgrind mode: no
D: [pulseaudio] main.c: Running in VM: no
D: [pulseaudio] main.c: Optimized build: yes
D: [pulseaudio] main.c: FASTPATH defined, only fast path asserts disabled.
I: [pulseaudio] main.c: Machine ID is 4007d0c0d1be4da192917632527b60c1.
I: [pulseaudio] main.c: Session ID is 2.
I: [pulseaudio] main.c: Using runtime directory /run/user/1000/pulse.
I: [pulseaudio] main.c: Using state directory /home/kyle/.config/pulse.
I: [pulseaudio] main.c: Using modules directory /usr/lib/pulse-8.0/modules.
I: [pulseaudio] main.c: Running in system mode: no
I: [pulseaudio] main.c: System supports high resolution timers
D: [pulseaudio] memblock.c: Using shared memory pool with 1024 slots of size 64.0 KiB each, total size is 64.0 MiB, maximum usable slot size is 65472
D: [pulseaudio] memblock.c: Using shared memory pool with 1024 slots of size 64.0 KiB each, total size is 64.0 MiB, maximum usable slot size is 65472
I: [pulseaudio] cpu-x86.c: CPU flags: CMOV MMX SSE SSE2 SSE3 SSSE3 SSE4_1 SSE4_2
I: [pulseaudio] svolume_mmx.c: Initialising MMX optimized volume functions.
I: [pulseaudio] remap_mmx.c: Initialising MMX optimized remappers.
I: [pulseaudio] svolume_sse.c: Initialising SSE2 optimized volume functions.
I: [pulseaudio] remap_sse.c: Initialising SSE2 optimized remappers.
I: [pulseaudio] sconv_sse.c: Initialising SSE2 optimized conversions.
I: [pulseaudio] svolume_orc.c: Initialising ORC optimized volume functions.
D: [pulseaudio] database-tdb.c: Opened TDB database '/home/kyle/.config/pulse/4007d0c0d1be4da192917632527b60c1-device-volumes.tdb'
I: [pulseaudio] module-device-restore.c: Successfully opened database file '/home/kyle/.config/pulse/4007d0c0d1be4da192917632527b60c1-device-volumes'.
I: [pulseaudio] module.c: Loaded "module-device-restore" (index: #0; argument: "").
D: [pulseaudio] database-tdb.c: Opened TDB database '/home/kyle/.config/pulse/4007d0c0d1be4da192917632527b60c1-stream-volumes.tdb'
I: [pulseaudio] module-stream-restore.c: Successfully opened database file '/home/kyle/.config/pulse/4007d0c0d1be4da192917632527b60c1-stream-volumes'.
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1 added for object /org/pulseaudio/stream_restore1
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry0
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry1
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry2
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry3
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry4
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry5
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry6
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry7
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry8
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry9
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry10
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry11
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry12
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry13
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry14
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry15
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Ext.StreamRestore1.RestoreEntry added for object /org/pulseaudio/stream_restore1/entry16
I: [pulseaudio] module.c: Loaded "module-stream-restore" (index: #1; argument: "").
D: [pulseaudio] database-tdb.c: Opened TDB database '/home/kyle/.config/pulse/4007d0c0d1be4da192917632527b60c1-card-database.tdb'
I: [pulseaudio] module-card-restore.c: Successfully opened database file '/home/kyle/.config/pulse/4007d0c0d1be4da192917632527b60c1-card-database'.
I: [pulseaudio] module.c: Loaded "module-card-restore" (index: #2; argument: "").
I: [pulseaudio] module.c: Loaded "module-augment-properties" (index: #3; argument: "").
I: [pulseaudio] module.c: Loaded "module-switch-on-port-available" (index: #4; argument: "").
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-udev-detect.so': success
I: [pulseaudio] module-udev-detect.c: Found 0 cards.
I: [pulseaudio] module.c: Loaded "module-udev-detect" (index: #5; argument: "").
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-jackdbus-detect.so': failure
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-bluetooth-policy.so': success
I: [pulseaudio] module.c: Loaded "module-bluetooth-policy" (index: #6; argument: "").
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-bluetooth-discover.so': success
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-bluez5-discover.so': success
D: [pulseaudio] dbus-util.c: Successfully connected to D-Bus system bus ac992a5f8610bd3770cdbe8b58500f4f as :1.53
I: [pulseaudio] module.c: Loaded "module-bluez5-discover" (index: #8; argument: "").
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-bluez4-discover.so': failure
I: [pulseaudio] module.c: Loaded "module-bluetooth-discover" (index: #7; argument: "").
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-esound-protocol-unix.so': failure
I: [pulseaudio] module.c: Loaded "module-native-protocol-unix" (index: #9; argument: "").
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-gconf.so': failure
I: [pulseaudio] module-default-device-restore.c: Saved default sink 'auto_null' not existent, not restoring default sink setting.
I: [pulseaudio] module-default-device-restore.c: Saved default source 'auto_null.monitor' not existent, not restoring default source setting.
I: [pulseaudio] module.c: Loaded "module-default-device-restore" (index: #10; argument: "").
I: [pulseaudio] module.c: Loaded "module-rescue-streams" (index: #11; argument: "").
D: [pulseaudio] module-always-sink.c: Autoloading null-sink as no other sinks detected.
I: [pulseaudio] module-device-restore.c: Restoring volume for sink auto_null: front-left: 49151 /  75%,   front-right: 49151 /  75%
I: [pulseaudio] module-device-restore.c: Restoring mute state for sink auto_null: unmuted
I: [pulseaudio] sink.c: Created sink 0 "auto_null" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: [pulseaudio] sink.c:     device.description = "Dummy Output"
I: [pulseaudio] sink.c:     device.class = "abstract"
I: [pulseaudio] sink.c:     device.icon_name = "audio-card"
D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event.
I: [pulseaudio] source.c: Created source 0 "auto_null.monitor" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
I: [pulseaudio] source.c:     device.description = "Monitor of Dummy Output"
I: [pulseaudio] source.c:     device.class = "monitor"
I: [pulseaudio] source.c:     device.icon_name = "audio-input-microphone"
D: [null-sink] module-null-sink.c: Thread starting up
D: [pulseaudio] module-device-restore.c: Could not set format on sink auto_null
I: [pulseaudio] module.c: Loaded "module-null-sink" (index: #13; argument: "sink_name=auto_null sink_properties='device.description="Dummy Output"'").
I: [pulseaudio] module.c: Loaded "module-always-sink" (index: #12; argument: "").
I: [pulseaudio] module.c: Loaded "module-intended-roles" (index: #14; argument: "").
D: [pulseaudio] module-suspend-on-idle.c: Sink auto_null becomes idle, timeout in 5 seconds.
I: [pulseaudio] module.c: Loaded "module-suspend-on-idle" (index: #15; argument: "").
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-console-kit.so': failure
D: [pulseaudio] module.c: Checking for existence of '/usr/lib/pulse-8.0/modules/module-systemd-login.so': success
I: [pulseaudio] client.c: Created 0 "Login Session 2"
D: [pulseaudio] module-systemd-login.c: Added new session 2
I: [pulseaudio] module.c: Loaded "module-systemd-login" (index: #16; argument: "").
I: [pulseaudio] module.c: Loaded "module-position-event-sounds" (index: #17; argument: "").
I: [pulseaudio] module.c: Loaded "module-filter-heuristics" (index: #18; argument: "").
I: [pulseaudio] module.c: Loaded "module-filter-apply" (index: #19; argument: "").
D: [pulseaudio] dbus-util.c: Successfully connected to D-Bus session bus 39a18a94aaa617494e5d95f358500f55 as :1.41
D: [pulseaudio] main.c: Got org.PulseAudio1!
D: [pulseaudio] main.c: Got org.pulseaudio.Server!
I: [pulseaudio] main.c: Daemon startup complete.
D: [pulseaudio] bluez5-util.c: Unknown interface org.freedesktop.DBus.Introspectable found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.bluez.AgentManager1 found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.bluez.ProfileManager1 found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.bluez.Alert1 found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.bluez.HealthManager1 found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.freedesktop.DBus.Introspectable found, skipping
D: [pulseaudio] bluez5-util.c: Adapter /org/bluez/hci0 found
D: [pulseaudio] bluez5-util.c: Registering /MediaEndpoint/A2DPSource on adapter /org/bluez/hci0
D: [pulseaudio] bluez5-util.c: Registering /MediaEndpoint/A2DPSink on adapter /org/bluez/hci0
D: [pulseaudio] bluez5-util.c: Unknown interface org.freedesktop.DBus.Properties found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.bluez.Media1 found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.bluez.CyclingSpeedManager1 found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.bluez.HeartRateManager1 found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.bluez.ThermometerManager1 found, skipping
D: [pulseaudio] bluez5-util.c: Unknown interface org.bluez.NetworkServer1 found, skipping
D: [pulseaudio] backend-native.c: Bluetooth Headset Backend API support using the native backend
D: [pulseaudio] backend-native.c: Registering Profile /Profile/HSPAGProfile
D: [pulseaudio] bluez5-util.c: Properties changed in adapter /org/bluez/hci0
E: [pulseaudio] backend-ofono.c: Failed to register as a handsfree audio agent with ofono: org.freedesktop.DBus.Error.ServiceUnknown: The name org.ofono was not provided by any .service files
D: [pulseaudio] bluez5-util.c: oFono is running: no
D: [pulseaudio] bluez5-util.c: Properties changed in adapter /org/bluez/hci0
I: [pulseaudio] client.c: Created 1 "Native client (UNIX socket client)"
D: [pulseaudio] protocol-native.c: Protocol version: remote 30, local 30
I: [pulseaudio] protocol-native.c: Got credentials: uid=1000 gid=1000 success=1
D: [pulseaudio] protocol-native.c: SHM possible: yes
D: [pulseaudio] protocol-native.c: Negotiated SHM: yes
D: [pulseaudio] srbchannel.c: SHM block is 65472 bytes, ringbuffer capacity is 2 * 32712 bytes
D: [pulseaudio] protocol-native.c: Enabling srbchannel...
D: [pulseaudio] module-augment-properties.c: Looking for .desktop file for kmix
D: [pulseaudio] module-augment-properties.c: Found /usr/share/applications/kde4/kmix.desktop.
D: [pulseaudio] conf-parser.c: Parsing configuration file '/usr/share/applications/kde4/kmix.desktop'
D: [pulseaudio] protocol-native.c: Client enabled srbchannel.
I: [pulseaudio] client.c: Created 2 "Native client (UNIX socket client)"
D: [pulseaudio] protocol-native.c: Protocol version: remote 30, local 30
I: [pulseaudio] protocol-native.c: Got credentials: uid=1000 gid=1000 success=1
D: [pulseaudio] protocol-native.c: SHM possible: yes
D: [pulseaudio] protocol-native.c: Negotiated SHM: yes
D: [pulseaudio] srbchannel.c: SHM block is 65472 bytes, ringbuffer capacity is 2 * 32712 bytes
D: [pulseaudio] protocol-native.c: Enabling srbchannel...
D: [pulseaudio] module-augment-properties.c: Looking for .desktop file for plasmashell
D: [pulseaudio] protocol-native.c: Client enabled srbchannel.



Code: Select all

$ lspci
00:00.0 Host bridge: Intel Corporation Device 5904 (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Device 5916 (rev 02)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 02)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller (rev 21)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI (rev 21)
00:1c.0 PCI bridge: Intel Corporation Device 9d10 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1d.0 PCI bridge: Intel Corporation Device 9d18 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Device 9d58 (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
3a:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)
3b:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
3c:00.0 Non-Volatile memory controller: Toshiba America Info Systems Device 0115 (rev 01)