0

lspci :

00:00.0 Host bridge: Intel Corporation Device 3e34 (rev 0b) 00:02.0 VGA compatible controller: Intel Corporation Device 3ea0 00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 0b) 00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th Gen Core Processor Gaussian Mixture Model 00:12.0 Signal processing controller: Intel Corporation Device 9df9 (rev 30) 00:14.0 USB controller: Intel Corporation Device 9ded (rev 30) 00:14.2 RAM memory: Intel Corporation Device 9def (rev 30) 00:14.3 Network controller: Intel Corporation Device 9df0 (rev 30) 00:15.0 Serial bus controller [0c80]: Intel Corporation Device 9de8 (rev 30) 00:15.1 Serial bus controller [0c80]: Intel Corporation Device 9de9 (rev 30) 00:16.0 Communication controller: Intel Corporation Device 9de0 (rev 30) 00:19.0 Serial bus controller [0c80]: Intel Corporation Device 9dc5 (rev 30) 00:1c.0 PCI bridge: Intel Corporation Device 9dbc (rev f0) 00:1d.0 PCI bridge: Intel Corporation Device 9db4 (rev f0) 00:1e.0 Communication controller: Intel Corporation Device 9da8 (rev 30) 00:1e.2 Serial bus controller [0c80]: Intel Corporation Device 9daa (rev 30) 00:1f.0 ISA bridge: Intel Corporation Device 9d84 (rev 30) 00:1f.3 Audio device: Intel Corporation Device 9dc8 (rev 30) 00:1f.4 SMBus: Intel Corporation Device 9da3 (rev 30) 00:1f.5 Serial bus controller [0c80]: Intel Corporation Device 9da4 (rev 30) 01:00.0 PCI bridge: Intel Corporation JHL6540 Thunderbolt 3 Bridge (C step) [Alpine Ridge 4C 2016] (rev 02) 02:00.0 PCI bridge: Intel Corporation JHL6540 Thunderbolt 3 Bridge (C step) [Alpine Ridge 4C 2016] (rev 02) 02:01.0 PCI bridge: Intel Corporation JHL6540 Thunderbolt 3 Bridge (C step) [Alpine Ridge 4C 2016] (rev 02) 02:02.0 PCI bridge: Intel Corporation JHL6540 Thunderbolt 3 Bridge (C step) [Alpine Ridge 4C 2016] (rev 02) 02:04.0 PCI bridge: Intel Corporation JHL6540 Thunderbolt 3 Bridge (C step) [Alpine Ridge 4C 2016] (rev 02) 03:00.0 System peripheral: Intel Corporation JHL6540 Thunderbolt 3 NHI (C step) [Alpine Ridge 4C 2016] (rev 02) 37:00.0 USB controller: Intel Corporation JHL6540 Thunderbolt 3 USB Controller (C step) [Alpine Ridge 4C 2016] (rev 02) 6c:00.0 Non-Volatile memory controller: Intel Corporation Device f1a8 (rev 03)

I have looked at several possible fixes including this onehttps://elementaryos.stackexchange.com/questions/24237/no-sound-in-elementary-5-1-on-acer-swift-5-sf514

But not sure which kernel to use from the suggestion https://kernel.ubuntu.com/~kernel-ppa/mainline/

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