Linux mint cinnamon 21 btw. I updated a bunch of applications yesterday. I couldn’t tell you what got updated, I’m sorry. It was a bunch of stuff after not having updated much for several months.
(Edit: according to the modified date of my config files in /boot/, I might not’ve updated anything since January ):

On boot, I get the usual welcome from the motherboard screen:

AMIBIOS©2023 American Megatrends, Inc. ASUS PRIME B65OM-A AX ACPI BIOS Revision 1616
CPU: AMD Ryzen 7 7700X 8-Core Processor Speed: 4500MHz
Total Memory: 32768MB (DDR5-4800)
USB Devices total: 0 Drive, 4 Keyboards, 3 Mice, 3 Hubs
Detected Storages…
SATA6G_1: Samsung SSD 860 EVO 2TB
SATA6G_2: HDC HD6OEFZX-68B3FNO
SATA6G_3: WDC WD6OEFRK-68LOBN1
SATA6G_4: WDC WDS200T2BOA
M.2_2: Samsung SSD 990 PRO with Heatsink 1TB

In case it’s relevant, the gpu is a MSI 6700xt. I’m not sure why it says 4 keyboards & 3 mice, but I do have a lot of USB cables plugged into the back for various reasons (maybe 8? 10?).

Then there appear these error messages for a few seconds:

0.3400851 pci 0000:10:00.0: Failed to read data
1.0549851 hub 8-0:1.0: config failed, hub doesn’t have any ports! (err -19)
3.5725731 usb usb1-port6: Cannot enable. Maybe the USB cable is bad?

Then the monitor goes black (like, no signal black).

What should I do/check?

BRB, looking to see if I can still ssh into my pc with my windows laptop

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EDIT UPDATE: I checked my pc’s IP address on the router. It’s connected to the router via ethernet, and it’s detected, Mac address provided and all. Even thought it seems connected to my router, and it’s powered on, I’m still not getting a response.

I’m trying to ssh with windows powershell on win10. “ssh blindfrog(notmyactualusername)@localipaddress” and all.

ssh: connect to host localipaddress port22: Connection timed out

If anything, I’m fine with replacing parts if I have to, even my drives. My /home and other important files are backed up to my NAS

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UPDATE: I booted off a USB stick with Mint, found the initrd.img on my desktop pc under /boot/ There’s a lot of versions of initrd listed, it looks like? They were all last modified the time of my update spree yesterday. How do I inspect them? Right clicking, I don’t get an option to “mount” them, nor am I sure how to do it in terminal. Opening the folder in terminal, then doing just “mount initrd.img” gets me:

mount: initrd.img: can’t find in /etc/fstab.

Gonna try to get to my pc’s bootloader :u

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UPDATE: Found grub config file in my pc under: /etc/default/grub.d/50_linuxmint.cfg

I followed these instructions and added these lines to the end of the file:

GRUB_TIMEOUT="5"
GRUB_TIMEOUT_STYLE="menu"

Now I’m stuck on how to “sudo update-grub”, but do it for the desktop pc, not my bootable usb stick, lol

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UPDATE: Found this resource involving chroot. I followed the “Manual Grub Restoration Method,” but first had to unmount the automatically mounted drive to emulate the instructions.

I had a problem at step 4, after successfully doing

sudo mount --bind /dev /mnt/dev
I’m getting the response for each of the other bind commands:

sudo: unable to allocate pty: No such device

According to this source, I used --rbind instead at the first source’s step 4, but kept getting the same “can’t allocate pty” message.

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UPDATE: Skipped all the above and went to chroot the automatically mounted drive with my OS

sudo chroot /media/mount/lotsoflettersandnumbers /bin/bash

Success! But “sudo update-grub” gets me:

/usr/sbin/grub-mkconfig: 37: /usr/share/grub/grub-mkconfig_lib: cannot create /dev/null: Permission denied
/usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?)

I’m not sure how to properly set up my system before chroot so update-grub will work
So I can get to my desktop’s bootloader
So I can see if there’s something to help me recover the previous kernel with sufficient drivers

If I don’t have any leads on this adventure by tomorrow morning, I’ll just reinstall with Mint 23 v.v
Sneak edit: I swear on my life one of the update notifications was the release of Linux Mint 23, but nowhere can I find it online now. I skipped it after my million updates because I didn’t want to break anything; figured Mint 21 support was probably expiring soon & I’d look up people’s takes on the new version before updating to it-- but now it doesn’t exist?