Xubuntu sound popping every few seconds SOLVED

The popping is caused by power saving feature that can cause audible pops when your sound card sleeps and wakes up. So in my desktop I disabled this feature!

My sound card is an HDA-Intel

cat /proc/asound/cards

0 [PCH ]: HDA-Intel - HDA Intel PCH
          HDA Intel PCH at 0xf7f30000 irq 34

To disable power saving and persist this change after reboot:

>>> /etc/modprobe.d/alsa-base.conf <<< add
options snd-hda-intel power_save=0 power_save_controller=N

To test settings (in my case doesn’t work)

sudo sh -c "echo 0 >  /sys/module/snd_hda_intel/parameters/power_save"
sudo sh -c "echo N > /sys/module/snd_hda_intel/parameters/power_save_controller"

REF: https://superuser.com/questions/1493096/linux-ubuntu-speakers-popping-every-few-seconds

Xubuntu 20.04 with LVM on LUKS

Boot Xubuntu installation media, choose “Try”, enter “Terminal emulator” …

First, create three partitions: EFI with 128MB, /boot with 512MB and last with remaining space

sudo fdisk /dev/sda
g

n
1
<ENTER>
+128M
<remove signature>
t
1

n
2
<ENTER>
+512M
t
2
20

n
3
<ENTER>
<ENTER>
t
3
31
Disk model: ST1000VN002-2E41
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: A2C8ED15-47CB-4E4B-929E-E45128441F03
Device Start End Sectors Size Type
/dev/sda1 2048 264191 262144 128M BIOS boot
/dev/sda2 264192 1312767 1048576 512M Linux filesystem
/dev/sda3 1312768 1953525134 1952212367 930.9G Linux LVM
sudo mkfs.fat -F32 /dev/sda1
sudo mkfs.ext2 -m 0 /dev/sda2
sudo cryptsetup luksFormat --hash=sha512 --key-size=512 --cipher=aes-xts-plain64 --verify-passphrase /dev/sda3
sudo cryptsetup luksOpen /dev/sda3 sda3_crypt

sudo pvcreate /dev/mapper/sda3_crypt

sudo vgcreate vg0 /dev/mapper/sda3_crypt

sudo lvcreate -n dskswap -L 16GB vg0
sudo lvcreate -n dskroot -L 100GB vg0
sudo lvcreate -n dskhome -L 100GB vg0
sudo mkswap /dev/mapper/vg0-dskswap
sudo swaplabel -L SWAP_SDA /dev/mapper/vg0-dskswap
sudo mkfs.ext4 /dev/mapper/vg0-dskroot
sudo mkfs.ext4 /dev/mapper/vg0-dskhome

Now, execute “Install Xubuntu 20.04 LTS” with icon on Desktop. Next, next, next… until “Instalation Type”, choose “Something else”

Devicetypemount point
/dev/mapper/vg0-dskhomeext4/home
/dev/mapper/vg0-dskhomeext4/
/dev/mapper/vg0-dskswapswapswap
/dev/sda1fat32/boot/efi
/dev/sda2ext2/boot
Xubuntu 20.04 custom install disk partitions

Device for boot loader installation: /dev/sda

Choose “continue testing”… Now build the chroot environment

Chroot environment

sudo cryptsetup luksOpen /dev/sda3 sda3_crypt
mkdir newpart
sudo mount /dev/mapper/vg0-dskroot newpart
sudo mount /dev/sda2 newpart/boot
sudo mount /dev/sda1 newpart/boot/efi

sudo mount -t proc /proc newpart/proc
sudo mount --rbind /dev newpart/dev
sudo mount --rbind /dev/pts newpart/dev/pts
sudo mount --rbind /sys newpart/sys 
sudo mount --rbind /run newpart/run
sudo chroot newpart

Now, prepare LUKS automount

sudo cryptsetup luksDump /dev/sda3 | grep UUID

>>> /etc/crypttab <<<
sda3_crypt UUID=2945b973-12ea-4f45-9454-8d873da8be9d none luks,discard

Test automount

$ sudo /sbin/cryptdisks_start sda3_crypt
/dev/mapper/vg0-dskroot / ext4 errors=remount-ro 0 1
UUID=45bf98f6-665e-4d9d-9462-e40b017e3881 /boot ext2 defaults 0 2
UUID=662E-6E71 /boot/efi vfat utf8,umask=007,gid=46 0 1
/dev/mapper/vg0-dskhome /home ext4 defaults 0 2
/dev/mapper/vg0-dskswap none swap sw 0 0
apt-get install grub-efi-amd64 efibootmgr

grub-install --target=x86_64-efi /dev/sda

efibootmgr --create --disk /dev/sda --part 1 --loader /boot/efi/EFI/BOOT/BOOTX64.EFI --label "Xubuntu Boot Manager"


## efibootmgr --create --disk /dev/sda --part 1 --loader /boot/efi/EFI/ubuntu/grubx64.efi --label "Xubuntu Boot Manger" --verbose


exit
reboot






# update-grub
# grub-install --recheck /dev/sda
# update-initramfs -u

reboot