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$ gsettings get org.gnome.desktop.interface color-scheme
# default

$ gsettings set org.gnome.desktop.interface color-scheme prefer-dark

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package rpc

type (
	API struct{}

	LivenessArgs  struct{}
	LivenessReply struct{ Ok bool }
)

// NewAPI returns a new API instance.

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package syncmap

import "sync"

// SyncMap is like a Go sync.Map but type-safe using generics.
//
// The zero SyncMap is empty and ready for use. A SyncMap must not be copied after first use.
type SyncMap[K comparable, V any] struct {
	mu sync.Mutex
	m  map[K]V

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Edit file:

$ sudo nano /etc/default/grub

Set (update) next values:

GRUB_DEFAULT=0

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Fast checking

After suspending (when your system cannot play any sounds) try to execute in your terminal (after sudo su):

$ lspci -D | grep -i Audio | awk '{print $1}'

And then:

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Actual for linux mint 18.3 and others

Source: https://askubuntu.com/a/465679

$ echo 'en_US' > ~/.config/user-dirs.locale
$ LANG=C xdg-user-dirs-update --force