No sound with Ubuntu 20.04 on Asus Zenbook UX533FTC

I installed Ubuntu 20.04 on my new Asus Zenbook UX533FTC-A8178T laptop coming with Windows 10, in dual boot.

No sound comes out from the speakers, or the headphones jack (while in Windows sound is ok).

I previously tried with 18.04 and it didn't work either. For several days I browsed similar "no sound questions", but it didn't work out. So now I freshly re-installed ubuntu 20.04, updated it, and installed pavucontrol, and inxi only for a fresh start.

Hoping someone can help I put some useful information below.

Thanks, Filippo

(PS I tried manjaro-gnome-19.0.2-200312-linux54.iso, while with Ubuntu 18.04 I tried different kernels: 4.19.0, 4.19.10, 4.19.43 etc etc)

• uname -a

Linux ZenBook 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

• alsamixer

AlsaMixer v1.1.3 ────────────────────────────────────────

│ Card: HDA Intel PCH                                                                   
│ Chip: Realtek ALC294                                                    
│ View: F3:[Playback]                                                                        

Everything is on, "OO", Auto-Mute is disabled

• inxi -SMAG

System:    Host: ZenBook Kernel: 5.4.0-26-generic x86_64 bits: 64 Desktop: Gnome 3.36.1 
           Distro: Ubuntu 20.04 LTS (Focal Fossa) 
Machine:   Type: Laptop System: ASUSTeK product: ZenBook UX534FTC_UX533FTC v: 1.0 
           serial: <superuser/root required> 
           Mobo: ASUSTeK model: UX534FTC v: 1.0 serial: <superuser/root required> 
           UEFI: American Megatrends v: UX534FTC.304 date: 12/16/2019 
Graphics:  Device-1: Intel UHD Graphics driver: i915 v: kernel 
           Device-2: NVIDIA TU117M [GeForce GTX 1650 Mobile / Max-Q] driver: nouveau v: kernel 
           Display: x11 server: X.Org 1.20.8 driver: nouveau resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa Intel UHD Graphics (CML GT2) v: 4.6 Mesa 20.0.4 
Audio:     Device-1: Intel driver: snd_hda_intel 
           Sound Server: ALSA v: k5.4.0-26-generic 

• pavucontrol

Output devices: Built-in Audio Analog Stereo
Port: Speakers (on which I can see the audio bar moving when playing a youtube video)
Configuration: Analog Stereo Duplex/Analog Stereo Output (same thing)

• cat /etc/modprobe.d/alsa-base.conf

# autoloader aliases
install sound-slot-0 /sbin/modprobe snd-card-0
install sound-slot-1 /sbin/modprobe snd-card-1
install sound-slot-2 /sbin/modprobe snd-card-2
install sound-slot-3 /sbin/modprobe snd-card-3
install sound-slot-4 /sbin/modprobe snd-card-4
install sound-slot-5 /sbin/modprobe snd-card-5
install sound-slot-6 /sbin/modprobe snd-card-6
install sound-slot-7 /sbin/modprobe snd-card-7

# Cause optional modules to be loaded above generic modules
install snd /sbin/modprobe --ignore-install snd $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-ioctl32 ; /sbin/modprobe --quiet --use-blacklist snd-seq ; }
#
# Workaround at bug #499695 (reverted in Ubuntu see LP #319505)
install snd-pcm /sbin/modprobe --ignore-install snd-pcm $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-pcm-oss ; : ; }
install snd-mixer /sbin/modprobe --ignore-install snd-mixer $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-mixer-oss ; : ; }
install snd-seq /sbin/modprobe --ignore-install snd-seq $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq-midi ; /sbin/modprobe --quiet --use-blacklist snd-seq-oss ; : ; }
#
install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq-midi ; : ; }
# Cause optional modules to be loaded above sound card driver modules
install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-emu10k1-synth ; }
install snd-via82xx /sbin/modprobe --ignore-install snd-via82xx $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq ; }

# Load saa7134-alsa instead of saa7134 (which gets dragged in by it anyway)
install saa7134 /sbin/modprobe --ignore-install saa7134 $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist saa7134-alsa ; : ; }
# Prevent abnormal drivers from grabbing index 0
options bt87x index=-2
options cx88_alsa index=-2
options saa7134-alsa index=-2
options snd-atiixp-modem index=-2
options snd-intel8x0m index=-2
options snd-via82xx-modem index=-2
options snd-usb-audio index=-2
options snd-usb-caiaq index=-2
options snd-usb-ua101 index=-2
options snd-usb-us122l index=-2
options snd-usb-usx2y index=-2
# Ubuntu #62691, enable MPU for snd-cmipci
options snd-cmipci mpu_port=0x330 fm_port=0x388
# Keep snd-pcsp from being loaded as first soundcard
options snd-pcsp index=-2
# Keep snd-usb-audio from beeing loaded as first soundcard
options snd-usb-audio index=-2

Solution 1:

I also have an issue with dualboot windows 10 / ubuntu 20. My issue with sound happens every time I switch from windows to ubuntu or the opposite. Haven't find a definitive solution yet, but I discovered that entering the bios menu and leaving it before starting with the other operating system allows to avoid the problem. So each time I reboot with a different operating system, I open the bios setup first, exit the bio setup, and boot with the different operating system. I have no issue when I reboot the operating system I used last...

Solution 2:

Not sure about the headphone jack (don't use it) but this is what fixed the issue with no sound on the inboard speakers on my Asus Zenbook UX534FTC running Ubuntu 20.04.

https://www.linux.org/threads/asus-zenbook-15-ux534f-realtek-hd-audio-problem.27384/post-94194

Only thing I did differently was that I put the script in /etc/rc.local to make it runs at startup (personal preference).

Almost forgot, you also need to install alsa-tools if you haven't already.

Good luck!