Tthinkpad Z13 No Sound From Builtin Laptop Speakers - Possible Problems From Codecs ALC287 And ALC3306

[ben at 0x1bi.xyz]

Hello, all;

I've discovered that on the Thinkpad Z13 latpop the builtin speakers 
don't work.
When plugging in headphones through the headphone jack sound is played 
from the
headphones, however no sound has ever been heard from the speakers.

There's already been many complaints leveled against the codecs used by 
this
laptop, namely ALC3306 and ALC287 (the Lenovo spec sheet says the codec 
used
is ALC3306 however alsa displays ALC287).

I'm wondering if there's anything I can do to resolve this issue, and 
more
importantly how can this issue be prevented for other laptops with 
similar specs.

Below is an output of some relevant commands

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 0: Generic [HD-Audio Generic], device 7: HDMI 1 [HDMI 1]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 0: Generic [HD-Audio Generic], device 8: HDMI 2 [HDMI 2]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 0: Generic [HD-Audio Generic], device 9: HDMI 3 [HDMI 3]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 0: Generic [HD-Audio Generic], device 10: HDMI 4 [HDMI 4]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
card 1: Generic_1 [HD-Audio Generic], device 0: ALC287 Analog [ALC287 
Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0

$ aplay -L
null
     Discard all samples (playback) or generate zero samples (capture)
default
     Default ALSA Output (currently PipeWire Media Server)
pipewire
     PipeWire Sound Server
hdmi:CARD=Generic,DEV=0
     HD-Audio Generic, HDMI 0
     HDMI Audio Output
hdmi:CARD=Generic,DEV=1
     HD-Audio Generic, HDMI 1
     HDMI Audio Output
hdmi:CARD=Generic,DEV=2
     HD-Audio Generic, HDMI 2
     HDMI Audio Output
hdmi:CARD=Generic,DEV=3
     HD-Audio Generic, HDMI 3
     HDMI Audio Output
hdmi:CARD=Generic,DEV=4
     HD-Audio Generic, HDMI 4
     HDMI Audio Output
sysdefault:CARD=Generic_1
     HD-Audio Generic, ALC287 Analog
     Default Audio Device
front:CARD=Generic_1,DEV=0
     HD-Audio Generic, ALC287 Analog
     Front output / input
surround21:CARD=Generic_1,DEV=0
     HD-Audio Generic, ALC287 Analog
     2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=Generic_1,DEV=0
     HD-Audio Generic, ALC287 Analog
     4.0 Surround output to Front and Rear speakers
surround41:CARD=Generic_1,DEV=0
     HD-Audio Generic, ALC287 Analog
     4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Generic_1,DEV=0
     HD-Audio Generic, ALC287 Analog
     5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Generic_1,DEV=0
     HD-Audio Generic, ALC287 Analog
     5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Generic_1,DEV=0
     HD-Audio Generic, ALC287 Analog
     7.1 Surround output to Front, Center, Side, Rear and Woofer 
speakersnull

Thanks in advance.


Ben Raskin