Fixing Linuxmint Audio on HP Envy x360

 Install Linuxmint 21.1 with secure boot turned off and wifi turned off

On first boot turn on secure boot

Join wifi, get all updates

sudo apt install linux-oem-22.04c [https://wiki.ubuntu.com/Kernel/OEMKernel]

git clone https://github.com/xoocoon/hp-15-ew0xxx-snd-fix # see https://h30434.www3.hp.com/t5/Notebook-Audio/No-sound-from-internal-speakers-using-Linux/m-p/8678403/highlight/true#M121500

cat /sys/class/sound/hwC0D0/subsystem_id

0x103c8a28

edit setup_snd-hda-codec-realtek.sh to remove this line

+  SND_PCI_QUIRK(0x103c, 0x8a29, "HP Envy x360 15-ew0xxx", ALC287_FIXUP_CS35L41_I2C_2),

and add this line

+   SND_PCI_QUIRK(0x103c, 0x8a28, "HP ENVY x360 2-in-1 Laptop", ALC287_FIXUP_CS35L41_I2C_2),

bash setup_snd-hda-scodec-cs35l41.sh
bash setup_snd-hda-codec-realtek.sh