Please do a test:

When speaker doesn't work, run,


sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x8
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x6ac8
// check if speaker works now

sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0xd
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0xa023
// check if speaker works now


sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x31
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0xd200
// check if speaker works now

sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x37
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0xfe05
// check if speaker works now

sudo hda-verb /dev/snd/hwC0D0 0x20 SET_COEF_INDEX 0x51
sudo hda-verb /dev/snd/hwC0D0 0x20 SET_PROC_COEF 0x6f6f
// check if speaker works now

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https://bugs.launchpad.net/bugs/1841330

Title:
  [HP Pavilion x360 Convertible 14-ba1xx, Realtek ALC295, Speaker,
  Internal] No sound at all

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