I realized that Timeshift is not doing scheduled snapshots and I need to fix that, since I had to reinstall the whole system some days ago (due to an erroneous update).
I use GNOME and have a 500 GB hard drive connected via SATA inside the computer, used for snapshots.
First, I thought the problem was that the drive was not mounting correctly, so Timeshift couldn’t either write to it. So I added a line in /etc/fstab for the drive to mount at boot:
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a device; this may
# be used with UUID= as a more robust way to name devices that works even if
# disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
UUID=1d871aad-5cd8-497a-bace-e94b8a4a267b / ext4 defaults,noatime 0 1
UUID=17555010-1d04-4efa-88e6-608775beac7b /home ext4 defaults,noatime 0 2
tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
UUID=ab407668-7db1-4f7d-a1b3-6386d2092245 /run/timeshift/1799/backup ext4 defaults 0 0
In the last line, I indicated to mount the drive at /run/timeshift/1799/backup, where the drive gets mounted when I do an ondemand snapshot in Timeshift.
But this didn’t solve the problem and Timeshift doesn’t do scheduled snapshots.
The last scheduled snapshot was done in February of 2022 (2022/02/??)
Do you have any hint, any idea to fix this?