CryBaby

Did you do Update All after removing knotes? If you were running wayland you will probably need to use Ctrl-Alt-F3 as wayland uses F1 and there is an (unusable) X server on F2 for xwayland. Then, after logging in sudo apt update sudo apt full-upgrade If that's not enough try sudo apt install task-kde-desktop

You can remove packages in Discover.

It looks like knotes has been replaced with Marknotes. Remove knotes and, if you like, install marknotes. It is supposed to import your old knotes data.

What version of the kernel is being installed? As yet ZFS only supports up to 6.16.

The armbian edge image for the FriendlyElec CM3588-NAS is currently on kernel 6.17 but has no HDMI audio despite it having been added in 6.15 (I think). This is simply because it has not been enabled in the device tree for this board. You can enable it with this user overlay: /dts-v1/; /plugin/; / { fragment@0 { target-path = "/hdmi0-sound"; __overlay__ { status = "okay"; }; }; fragment@1 { target-path = "/hdmi1-sound"; __overlay__ { status = "okay"; }; }; };

I would put boot and system on the eMMC. Then it will run with or without the SSD, which I would reserve for data. Things like VMs and containers that get a lot of writes can go on the SSD and be symbolically linked to their system folders.

Sounds to me like a bad SD card. If you get a splash screen there must be some sort of bootloader. Another possibility is an inadequate power supply. Try one with more amps.

Will it cook my breakfast too?

linux-sunxi@googlegroups.com is where they used to hang out but I don't know if they are still active there.

https://docs.armbian.com/Developer-Guide_Build-Preparation/ Once you have the code installed copy the above-linked patch to build/patch/kernel/archive/sunxi-something/ and do the compile.

There is a patch. It doesn't appear to have reached mainline yet. Perhaps it could be added to Armbian builds. You probably want to go back to your original, working, kernel.

I believe the nand is not supported. This is not a great loss as it is flaky and unreliable. Not sure about the rtc. Do you have a battery?

This is likely a $PATH issue. usermod is in /usr/sbin which is probably not in your user's $PATH. If you su without adding - you do not get root's $PATH but with sudo you do.

That does look like a bad SD card. If another one works that would tend to confirm it.

I would guess you have fiddled with /etc/fstab or copied your root partition from elsewhere without fiddling with your /etc/fstab. Or maybe /boot/armbianEnv.txt At any rate, the kernel is looking for a partition with UUID=0b77.... to mount at / but isn't finding it. So you need to either change the UUID it is looking for to the one your root partition has, or change your root partition to have the UUID it is looking for.