Thinkbook 13s ITL G2 headphones hissing sound, noise fix

Kubuntu 20.04 LTS

Problem: wired headphones reproduce constant hissing sound, noise changes with the cursor movement etc.

Solution:

 sudo hda-verb /dev/snd/hwC0D0 0x1d SET_PIN_WIDGET_CONTROL 0x0

 

Sources:

https://www.reddit.com/r/thinkpad/comments/8j8208/audio_crackling_through_both_headphone_jack_and/

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1805079/comments/20

 

Thinkbook 13s G2 ITL battery conservation mode in Linux

 https://wiki.archlinux.org/title/Laptop/Lenovo#Battery_Conservation_Mode_on_IdeaPad_laptops

echo 1 >/sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode

 

hdparm fix for ubuntu 15.04

https://www.linux.org.ru/forum/general/8726915

> cat /etc/systemd/system/fix-hdparm@.service 
[Unit]
Description=Fix some hdparm settings after suspend/restore
After=dev-%i.device suspend.target hibernate.target sysinit.target hybrid-sleep.target
Requires=dev-%i.device

[Service]
Type=oneshot
ExecStart=/sbin/hdparm -B 254 /dev/%i

[Install]
WantedBy=suspend.target
WantedBy=hibernate.target
WantedBy=hybrid-sleep.target
WantedBy=sysinit.target

# systemctl enable fix-hdparm@sda
ln -s '/etc/systemd/system/fix-hdparm@.service' '/etc/systemd/system/suspend.target.wants/fix-hdparm@sda.service'
ln -s '/etc/systemd/system/fix-hdparm@.service' '/etc/systemd/system/hibernate.target.wants/fix-hdparm@sda.service'
ln -s '/etc/systemd/system/fix-hdparm@.service' '/etc/systemd/system/hybrid-sleep.target.wants/fix-hdparm@sda.service'
ln -s '/etc/systemd/system/fix-hdparm@.service' '/etc/systemd/system/sysinit.target.wants/fix-hdparm@sda.service'

vasily_pupkin ★★★★★ (16.01.2013 15:36:34)

Ubuntu 9.04 on HP Compaq 6510b

Core2Duo T7250, 2GB, intel 965

LiveCD runs fine, all hardware works.
After installation everything works just fine except compiz -- it doesn't run, although 3D games like TuxRacer, Chromium etc. run smooth.