Gnome's file manager Nautilus doesn't display video thumbnails under Ubuntu 24.04. Thankfully this solution still works: https://askubuntu.com/questions/1034595/thumbnails-not-showing-in-video-in-ubuntu-18-04 sudo apt install ffmpegthumbnailer sudo apt install gstreamer1.0-libav rm -r ~/.cache/thumbnails/fail Reboot Done!
Month: Jun 2025
Trim on LUKS encrypted LVM root volumes
I noticed that fstrim wasn't working on my new Ubuntu 24.04 desktop installation, failing with "fstrim: /: the discard operation is not supported". In that setup, Ubuntu is installed into an LUKS encrypted LVM volume, so the ext4 file system, LVM and LUKS need to play nicely together for flash discard to work. That's how … Continue reading Trim on LUKS encrypted LVM root volumes
Screen overlays in Linux
I heavily customise my Linux desktop setups, which includes binding scripts to hotkeys. Occasionally a visual feedback is useful (eg. when changing the CPU frequency). I'm aware of the following ways to display some sort of overlays which I tried with Ubuntu 24.04: Notifications Notify-send notifications display as simple rectangles. notify-send "Volume" "80%" Although there … Continue reading Screen overlays in Linux
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