Author Archives: David

Ubuntu/Linux: systemd-resolved[2344]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.

In one of my systems the system log was reporting every 2-3 minutes the following error message: This was caused by a mismatch between the systemd configuration and /etc/resolv.conf. /etc/resolv.conf should be a symbolic link pointing to the systemd DNS configuration in /run/systemd/resolve/resolv.conf You can check if this is in place just by listing the… Read More »

Ubuntu 20.04: Install Ubuntu with ZFS and encryption

Ubuntu 20.04 offers installing ZFS as the default filesystem. This has lots of advantages. My favourite is being able to revert the system and home partitions (simultaneously or individually) to a previous state through the boot menu. One major drawback for me is the lack of an option to encrypt the filesystem during the installation.… Read More »

Ubuntu: Ubuntu 20.4 installing NVIDIA drivers breaks built-in audio on laptop

On a new laptop I couldn’t get the external HDMI monitor to work with the nouveau drivers, so I installed the NVIDIA drivers (version 440). The NVIDIA drivers worked perfectly and the external monitor could be configured, but it didn’t take too long to notice that the built-in audio wasn’t working. Audio would only play… Read More »

SNFS/Xsan: Changing a volume name

In the past it used to be a very straightforward process. You would rename the volume configuration file and run cvfsck. With newer versions if you try to do that you will get an error message. To make the name change you can use the cvupdatefs command. If you have more than one volume running,… Read More »

Covid19

I hope that my very scarce readership and their relatives and friends are well. These are going to be very trying times. It is because of this that spreading rumours and messages that aren’t contrasted has to be discouraged. Rumours kill people. Please, consult official and trusted sources of information. Spreading rumours, however well-meant, might… Read More »

macOS: Spotlight results not showing applications

Sometimes if your system restarts unexpectedly Spotlight stops working as expected. In this particular case it won’t show any Applications on the results despite the settings on System Preferences. This will happen even if you disable and re-enable Spotlight through the GUI. The solution is do it via the CLI. Stop Spotlight indexing: Stop Spotlight:… Read More »

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