I note this in the diagnostic script:
!!Soundcards recognised by ALSA
!!-----------------------------
0 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xd6800000 irq 52
ie according to the alsa sound driver, you have only one audio card in your Alienware M17xR3
and I also note:
!!HDA-Intel Codec information
!!---------------------------
--startcollapse--
Codec: IDT 92HD73C1X5
It has an IDT 92HD73C1X5 hardware audio codec.
In terms of playback, that card provides analog, digital and HDMI playback:
!!Aplay/Arecord output
!!------------
APLAY
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: STAC92xx Digital [STAC92xx Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
Your sound should be working. Which of those 3 (analog or digital or HDMI) are you trying to use ? That IS important.
Please follow my advice reference the checking of pavucontrol. Ensure you have the correct device selected in the Configuration TAB. Please ensure you have SHOW all output devices selected in the ‘output device’ tab. Please ensure you have SHOW ‘all streams’ selected in the Playback Tab.
Please provide some screen prints of your settings in pavucontrol so we can do a quality check of those settings.
Reference the alsa sound driver, I’m not at home right now (and hence no access to my notes) but if the alsa driver is not configured properly, and if my memory is correct reference the 92HD73C1X5 hardware audio codec (and my memory could be wrong) then it may be possible to force different configurations to the alsa sound driver upon boot using a special model option. But I can’t check that now.
Please first try again with the application ‘pavucontrol’.