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submitted 11 months ago by fl42v@lemmy.ml to c/linux@lemmy.ml

Tinkering is all fun and games, until it's 4 am, your vision is blurry, and thinking straight becomes a non-option, or perhaps you just get overly confident, type something and press enter before considering the consequences of the command you're about to execute... And then all you have is a kernel panic and one thought bouncing in your head: "damn, what did I expect to happen?".

Off the top of my head I remember 2 of those. Both happened a while ago, so I don't remember all the details, unfortunately.

For the warmup, removing PAM. I was trying to convert my artix install to a regular arch without reinstalling everything. Should be kinda simple: change repos, install systemd, uninstall dinit and it's units, profit. Yet after doing just that I was left with some PAM errors... So, I Rdd-ed libpam instead of just using --overwrite. Needless to say, I had to search for live usb yet again.

And the one at least I find quite funny. After about a year of using arch I was considering myself a confident enough user, and it so happened that I wanted to install smth that was packaged for debian. A reasonable person would, perhaps, write a pkgbuild that would unpack the .deb and install it's contents properly along with all the necessary dependencies. But not me, I installed dpkg. The package refused to either work or install complaining that the version of glibc was incorrect... So, I installed glibc from Debian's repos. After a few seconds my poor PC probably spent staring in disbelief at the sheer stupidity of the meatbag behind the keyboard, I was met with a reboot, a kernel panic, and a need to find another PC to flash an archiso to a flash drive ('cause ofc I didn't have one at the time).

Anyways, what are your stories?

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[-] FollowingTheTao@lemmy.dbzer0.com 5 points 11 months ago

I wanted my top bar in DWM toshow the time, so I put the script directly into the .xinitrc file instead of the path to the script.

[-] lemming741@lemmy.world 5 points 11 months ago

I installed python one time

[-] emly_sh_@sh.itjust.works 5 points 11 months ago

I've not broken my setup (yet), but I've came close to it one time when I accidentally made a lesser fork bomb.

I was writting a function that would display how many jobs I currently had in the command prompt, but when writting the function instead of calling jobs I called the function itself, sourced .bashrc and now everything was laggy (my pc only has 4GB). Thankfully I was able to shut down the terminal before my swap got completely consumed.

[-] marionberrycore@lemmy.blahaj.zone 5 points 11 months ago

About a year ago I somehow fucked up installing a new window manager on my tablet so badly I had to start from scratch - to this day I have no idea what happened there, but it just wouldn't boot properly or anything after that 🤷 I needed it for school pretty quickly though so my top priority was getting it working again, so I set up a fresh install instead of continuing to fuck around.

Not the same level of destruction, but I fucked up my first ever install a couple months in trying to resolve dependencies related to python and wine, which is why I'm more interested in sandboxing whenever feasible these days. After only two months I guess I had been fucking around with linux long enough to have a little too much unearned confidence, lol

[-] ulterno@lemmy.kde.social 5 points 11 months ago

I'm not sure how funny this will be, but here's how I broke my system twice in a single case. Step by step:

  1. Migrated from Manjaro KDE to EndeavourOS KDE. Kept the previous home directory.
  2. After a few updates, there was a problem with Plasma. Applications were not starting from the panels or the .desktop files (they worked from the terminal. The terminal emulator was in startup and worked that way)
  3. After a few google searches, found out that downgrading glibc would do something, so downgraded... Worked for a while
  4. While using pacman -Syu, I always checked for warnings (foolishly thinking that the downgraded and ignored glibc would cause a pacman warning if it broke dependencies) and there were none. So, the updated OS stopped working due to unmatched glibc. BREAK 1
  5. To fix it, I opened one of my multiple boots (another EndeavourOS) and made a script using pacman -Ql and cp to copy new glibc related files into the broken system (because I was too lazy to learn how to do it the correct way with pacman and chroot didn't work because glibc is needed by bash).
  6. Turned out the script I made was wrong and I hadn't checked the intermediate output from pacman -Ql, which was telling cp to copy the whole /etc /usr and other directories. (just if I hadn't given the -r to cp) BREAK 2

In the end, I just made a new installation, this time with a new home and hand-picked whatever settings I wanted from the previous home, Viva la multi-HDD

[-] tanuki@lemmy.world 5 points 11 months ago

The first time I wanted to try Linux I did by installing elementary OS in dual boot mode (with windows) and everything went well, I played with it a bit and then I returned to Windows..

So, few days after that I realize that I have a lot of space in the Linux partition and I didn't have plans to use it anymore so I go to drive's & partition's manager on windows to delete my elementary OS partition..

Oh Lord when I restarted my PC, grub was showing nonsenses and I couldn't boot on windows again, I was in panic, I spent the rest of the day trying to fix grub to boot windows. At the end of the day I did it and save all my files and I uninstall grub properly, but what a day 😂

[-] Theharpyeagle@lemmy.world 5 points 11 months ago

Back when I started using Linux, I really wanted something that was super different from windows (I used Gnome 3 for like 3 years). I decided one day to try out Fedora cause, hey, I can live on the bleeding edge.

Second day I had it installed, I was having issues with the audio. Decided to try reinstalling pulse. Apt autoremoved it and somehow completely nuked the entire GUI. Stuck in terminal mode, I found that I had no ethernet to connect to, nor could I figure out how to connect to a wifi network with a password or download packages to a USB. After a couple hours, I gave up, wiped the drive, and went back to Mint.

Nowadays I'm happier in my little comfort zone.

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[-] ULS@lemmy.ml 5 points 11 months ago

A regular update I guess...

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[-] linearchaos@lemmy.world 5 points 11 months ago

I used to work at this place that had a gigantic QNX install. I don't know if QNX that we used back then had any relation to q&x now They certainly don't look very close.

It was in the '90s and they had it set up so that particular nodes handled particular jobs. One node to handle boot images and serve as a net boot provider, one node handled all of the arcnet to ethernet communication, one node handled all the serial to mainframe, a number of the nodes were main worker nodes that collected data and operated machinery and diverters. All of these primary systems were on upper-end 386s or 486s ,they all had local hard disks.

The last class of node they called slave nodes. They were mainly designed for user data ingest, data scanning stations, touch screen terminals, simple things that weren't very high priority.

These nodes could have hard discs in them, and if they did, they would attempt to boot from them saving the net boot server a few cycles.

If for some reason they were unable to boot from their local hard drive, They would netboot format their local hard drive and rewrite their local file system.

If they were on able to rewrite their local file system they could still operate perfectly fine purely off the net boot. The Achilles heel of the system was that you had no idea that they had net booted unless you looked into the log files. If you boot it off your local hard drive of course your root file system would be on your local hard drive. If you had net booted, and it could not rebuild your local file system, your local root file / was actually the literal partition on the boot server. Because of the design of the network boot, nothing looked like it was remotely mounted.

SOP for problems on one of the slave nodes was to wipe the hard disk and reboot, in the process it would format the hard drive and either fix itself or show up as unreliable and you could then replace the disc or just leave the disc out of it. Of course If the local disk had failed and the box had already rebooted off netboot without a technician standing there to witness it, rm -Rf would wipe out the master boot node.

I wasn't the one that wiped it, but I fully understand why the guy did.

Turns out we were on a really old version of QNX, we were kind of a remote warehouse mostly automated. They just shut us down for about a week. Flew a team out. Rebuilt the system from newer software, and setup backups.

[-] musicmatze@lemmy.ml 5 points 11 months ago* (last edited 11 months ago)

Not really a "braking my linux setup", but still fun as hell! Back in university, a friend of mine got a new notebook at a time... we spent the night at the university hacking and they wanted to set the notebook up in the evening. They got to the point where they had to setup luks via the cryptsetup CLI. But they got stuck, it just wouldn't work. They tried for HOURS to debug why cryptsetup didn't let them setup LUKS on the drive.

At some point, in the middle of the night (literally something like 2 in the morning) they suddenly JUMPED from their seat and screamed "TYPE UPPERCASE 'YES' - FUCK!!!"

They debugged for about six hours and the conclusion was that cryptsetup asks "If you are sure you want to overwrite, type uppercase 'yes'". ... and they typed lowercase. For six hours. Literally.

The room was on the floor, holding their stomach laughing.

[-] elax102@lemmy.world 4 points 11 months ago* (last edited 11 months ago)
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[-] gianni@lemmy.ml 4 points 11 months ago

Just yesterday I overwrote some pacnew files and borked user authentication for myself. Very rough time

[-] haruajsuru@lemmy.world 4 points 11 months ago* (last edited 11 months ago)

I mistyped my SU password when setup the OS...

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[-] drathvedro@lemm.ee 4 points 11 months ago

Actually, I have a story that I'd consider an achievement even though it was extremely stupid and by all accounts should've bricked the system but didnt.

So I was on windows and wanted to install linux as a dual-boot on the main drive. The problem was that my mobo didnt like this particular and the only flash drive I've had, dropping it out mid-boot, before I got any usable terminal, so a usual install method wasn't an option. So I had this crazy idea to start a vmware vm in windows and pass the linux iso and the boot drive directly to it and try to install it live over the running system. Unfortunately, vmware guys thought of this and there's a check that disallows passing the boot drive to vms. So i created a bunch of .vmdks for another drive and fiddled with them in notepad until I somehow managed to trick vmware and at some point it started booting the same windows copy that I was sitting on. I quickly powered it off, added the linux iso and proceeded to install like I usually would. It did involve some partition shuffling, but, somehow, it went smoothly, linux installed, grub caught on, and even windows somehow survived, even though it was physically moved around on the disk. It serms that vmware later patched this out, because later in an attempt to re-create the trick of running the same copy of windows twice, but after updates to both windows and vmware, I was met with the same old error that boot drive is not allowed when trying to add that same virtual drive I had laying around.

[-] JATtho@sopuli.xyz 3 points 11 months ago

I had a similar debacle, when I managed to corrupt a btrfs file system to point it wouldn't mount again...

I was preparing it to have as my main system on bare hardware. I had accidentally mounted the same block device simultaneously in the host and guest: kablamo silent corruption and all 5 hours of progress lost.^*^ :(

*shred the guest VM, host was ok.

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[-] Tarogar@feddit.de 4 points 11 months ago

I suppose it doesn't quite qualify as breaking the system in a funny or stupid way but it certainly was one of those stupid things that was easy to fix after a ton of trouble shooting, ignoring the issue for a while and trying to fix it again.

So i had an old pc where I had a failed hard drive which I replaced. Obviously I also accidentally unplugged my optical disc drive and plugged it back in. Now that failed drive was just a data drive so the system should have booted up no problem since the os was on a SSD but instead it got a kernel panic and got stuck at boot. Since it was late I left it at that and came back to that the next day where it would still not boot. So I unplugged the disc drive and looked up what it could be. Tried a ton of different possible solutions but every time I added that disc drive it would panic.

I eventually kind of gave up and just didn't use that disc drive at all and just had it as a paperweight in the system. Unplugged and all that. When my replacement SSDs for my old data drive and backup drive came in I tried again to get that optical drive working but to no avail. So I unplugged it again, got it all set up and ran into another issue where for some reason Linux couldn't properly use my backup SSD. So I investigated that as well and trough some miracle found a post on the forum from my Mainboard manufacturer... Turns out that particular Mainboard had a data retention chip on it that didn't like Linux.

So naturally I just plugged everything into the data ports that were not controlled by that chip and it all worked as intended.

Stupid dumb chip on a Mainboard, all I had to do was try the simple idea of unplugging and trying a different connector but instead I did all that other stuff first that didn't work and cost me so much of my time.

Moral of the story, when in doubt try and put stuff on different connectors and see if that fixes it. Might just be a dead connector for all you know. Or an incompatible chip on the Mainboard.

FWIW I bought that Mainboard long before I switched to Linux and didn't plan at all to switch at the time. But that's a different story.

[-] inetknght@lemmy.ml 4 points 11 months ago

I was running Fedora. Something like 27 or so. I needed drivers. I don't remember if it was AMD or Nvidia, but they were only available on RedHat.

So I downloaded the RedHat drivers for the GPU and forced it to install. It worked! It was great.

Then when I updated the distro to the next release... everything failed. It was dropping into grub, but no video was output. Ooof.

So I ended up enabling a terminal console and connecting to it via a serial port to debug. I had to completely uninstall that RPM and I was never happy that it was properly gone. So a few months later I ended up reinstalling the whole OS.

On the plus side, I learned a lot about grub and serial consoles. Worth it.

[-] bitwolf@lemmy.one 4 points 11 months ago* (last edited 11 months ago)

The only time was within a VM. I accidentally wrote

rm -rf ./* while my cwd was /

I use absolute paths with -rf now, to prevent the error again.

Every other breakage I had was with apt shitting itself. It has always been fixable just annoying.

I now use Fedora, to prevent the error again.

[-] callyral@pawb.social 4 points 11 months ago

and a need to find another PC to flash an archiso to a flash drive ('cause ofc I didn’t have one at the time).

you can do that from your phone using etchdroid

i don't remember ever breaking my system in a terrible way, but when i started using linux (with linux mint) i uninstalled ca-certificates and i think that uninstalled the whole DE

[-] ethanolparty@lemmy.ml 4 points 11 months ago

A few years ago I was having obscure audio problems on Ubuntu so I tried replacing pulseaudio with pipewire. I was feeling pretty cocky with using the package manager so I tried

sudo apt install pipewire

Installed successfully, realized nothing changed, figured maybe I had to get rid of pulseaudio to make it stick.

sudo apt remove pulseaudio

Just two commands. Instant black screen, PC reboots into the terminal interface. No GUI. Rebooting again just brings me back to the terminal.

I fixed it eventually, but I'm really not very computer literate despite using Linux, so I was sweating bullets for a minute that I might have bricked it irreversibly or something.

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[-] cyberfae@lemmy.world 4 points 11 months ago

I can't remember what I did to break it, but back when I was in high school I was tinkering right before class and rendered my laptop unbootable. I booted into an Arch Linux USB, chrooted into my install, found the config file I messed with, then reverted it. I booted back into my system and started the bell ringer assignment as quickly as I could. I had one minute left when the teacher walks by, looks at it, and says that I did a really good job. She never knew my laptop was unbootable just 2 minutes earlier.

[-] tigerjerusalem@lemmy.world 4 points 11 months ago* (last edited 11 months ago)

sudo apt upgrade -y

To this day I can’t figure out why it killed the GUI and all terminal commands on a Mint install…

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[-] thomasdouwes@sopuli.xyz 4 points 11 months ago* (last edited 11 months ago)

I was testing a custom initramfs that would load a full root into a ramdisk, and when I was going to shut down I tried to run rm -rf --no-preserve-root / to see what would happen, since I was on a ramdisk anyway. The computer would not boot after that because it nuked the UEFI options.

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[-] ArmainAP@programming.dev 3 points 11 months ago

Somehow I found ways to remove and break the GUI multiple times in multiple ways in multiple distros.

Different scenarios, different times, different issues trying to "fix". My usual fix after this was always to copy what I think I still had important and then move on with a reinstall.

Recently I have been playing with ZorinOS and broke it in the same way by fidgeting with pipewire. Distro hoped to Fedora Silverblue due to the immutable filesystem. I wonder if I will break this one in a way I cannot revert it easily with rpm-ostree. I almost feel challenged.

[-] Head 3 points 11 months ago

I deleted the entire taskbar.

[-] AlijahTheMediocre@lemmy.world 3 points 11 months ago

I somehow locked myself out of sudo when trying to give my user permission to read serial devices.

Had to reinstall.

[-] zako@lemmy.world 3 points 11 months ago

rm -rf /var

I don't know what I was thinking on to type it 😅

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this post was submitted on 22 Jan 2024
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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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