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this post was submitted on 21 Apr 2024
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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have an nvidia GPU
have Fedora
download RPM package of drivers for Red Hat (after all, Fedora and Red Hat are... compatible, right?)
Everything goes fine
Six months later, upgrade to a new version of Fedora
oops, kernel panic at boot after the upgrade, and no video to troubleshoot after UEFI boot
figure out how to boot into a recovery partition from UEFI
figure out how to enable a serial console over a USB device
figure out how to connect to the serial console from another computer using another USB device
figure out what the kernel panic is from (not the upgrade, but the driver which wasn't upgraded)
figure out how to uninstall the incorrectly installed driver
figure out how to install the correct driver
That was a fun three week OS upgrade.
I have a super-n00b question, and I apologize in advance, but, uh...yeah, what is a serial console?
Adding to what DmMacniel said, it's a hardware interface, often accessed via a USB port (which after all, is the universal serial bus).
Christ you guys are making me feel old. I remember back in the day when a serial connection was made through an actual serial port. I know I have some serial cards around here somewhere. I have also used the tar command on an actual tape... Here's a fun fact, if your tape drive (big reel to reel looking thing, not a cassette or other kind of 'tape') has an issue with rewinding, do not use your finger to manually spin the reel. Use a pencil. I finished reeling my tape back up once and realized I now had a blister on the end of my finger.
My motherboard which is only a few years old (2ish?) has serial port pin outs.