# Change live setting
echo "0" | sudo tee /sys/module/snd_hda_intel/parameters/power_save
# Change permanent setting
echo "options snd_hda_intel power_save=0" | sudo tee -a /etc/modprobe.d/audio_disable_powersave.conf
sudo apt install unattended-upgrades
# Enable this setting in Unattended-Upgrade::Allowed-Origins
"${distro_id}:${distro_codename}-updates";
Unattended-Upgrade::Remove-Unused-Kernel-Packages "true";
Unattended-Upgrade::Remove-Unused-Dependencies "true";
# Replace email address with administrator address and insure that email can be sent from cli
Unattended-Upgrade::Mail "you@some.site";
# Enable auto reboot
Unattended-Upgrade::Automatic-Reboot "true";
Unattended-Upgrade::Automatic-Reboot-Time "02:38";
# For non-critical servers, add this:
Unattended-Upgrade::Automatic-Reboot-WithUsers "true";
# Some of these settings may already be active
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Download-Upgradeable-Packages "1";
APT::Periodic::AutocleanInterval "7";
APT::Periodic::Unattended-Upgrade "1";
sudo unattended-upgrades --dry-run --debug
References
svn copy --parents "https://www.softco.co.za/svn/trunk/projects/test/" "https://www.softco.co.za/svn/branches/v1.1/test/"
Snap packages are sandboxed and therefore they are not by default allowed to access the password service.
For example: When you choose “Store in keychain” MySQLWorkbench is blocked by AppArmor. To fix
this, you need to execute a command similar to the following (which is to allow MySQLWorkbench access
to the password manager service)
sudo snap connect mysql-workbench-community:password-manager-service :password-manager-service
References:
# Basic requirements
sudo apt install sane sane-utils xsane
# XSane might need the following libraries
# (start xsane net:10.0.0.123 from cli to see if libcanberra is missing)
sudo apt install libcanberra-gtk-module libcanberra-gtk3-module
# Copy systemd files
sudo cp /usr/lib/systemd/system/saned* /etc/systemd/system
# Set RUN=yes in /etc/default/saned
# Enable Sane socket
sudo systemctl enable saned.socket
# Find USB vendor ID
# (Vendor (VVVV) and device (DDDD) in "ID VVVV:DDDD")
sudo lsusb
# Change udev rules to use specific device group
# (Change VVVV for Vendor ID)
echo '"SUBSYSTEM=="usb", ATTRS{idVendor}=="VVVV", MODE="0660", GROUP="scanner", ENV{libsane_matched}="yes"' > cat /etc/udev/rules.d/55-libsane.rules
# Edit /etc/saned.d/saned.conf and add access lists as follows
192.168.0.0/24
10.0.0.0/24
127.0.0.1
localhost
# Add scanner group to users
sudo usermod -a -G scanner [your-user-name]
# Enable Sane socket
sudo systemctl enable saned.socket
sudo systemctl start saned.socket
# If scanner is still not listed, edit /etc/systemd/system/saned@.service and
# Enable net module
# Edit /etc/saned.d/dll.conf and uncomment line containing net
# Edit /etc/saned.d/net.conf and add server ip addresses as follows:
localhost
10.0.0.100
# If no scanners are listed on the client, you might want to run saned as root:
# Edit /etc/default/saned and uncomment RUN_AS_USER
# Edit /etc/systemd/system/saned.socket and uncomment RUN_AS_USER
# Edit /etc/systemd/system/saned@.service and uncomment both User and Group
# You can enable logging on the server by uncommenting Environment=SANE_CONFIG_DIR=/etc/sane.d SANE_DEBUG_DLL=255
# To view debugging information:
tail -f /var/log/syslog
# Now search for scanners on client:
scanimage -L
# You might want to enable data port ranges in /etc/saned.d/saned.conf
data_portrange = 10000 - 10010
