this post was submitted on 26 Mar 2024
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    What is the most difficult problem that you have fixed in linux? (lemmy.world)
    submitted 7 months ago by Waffelson@lemmy.world to c/linuxmemes@lemmy.world
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    [–] shadowintheday2@lemmy.world 1 points 7 months ago

    Used to be messing with kernel arguments and installing/tweaking boot parameters. That was until Grub broke, I learned systemd-boot and chrooting into the system via live USB

    Now if I break anything it's just a matter of "sigh, let me get the USB and type a few commands"

    [–] Samsy@lemmy.ml 1 points 7 months ago

    My first home server would get lost on the network every week, at different times and without any apparent reason. I performed hard resets by unplugging and plugging it back in.

    After several months, I decided to connect a screen to it, and I initially thought it had hung up, but it hadn't. After some investigation, I discovered that every time my router obtained a new dynamic IP address, the server lost its network connection, requiring a reset. I wrote a script to check the network connection every minute, and if it's lost again, it will be reset.

    [–] dlok@lemmy.ml 1 points 7 months ago (1 children)

    I feel seen here, I was building a Ubuntu server and messed up the firewall settings not being able to get an internet connection, hours of trying to get back to where I was I gave up and plan to just start from scratch next time.

    Is there a way of taking system snapshots with Linux?

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    [–] megabat@lemm.ee 1 points 7 months ago

    Hmm I have come up with a bunch of neat solutions over the years. Where to start?

    One time I broke the sudoers file on a distro without a root account, thoroughly locking myself out. I used docker -v /:/chroot to get myself root access to my root filesystem where I fixed the sudoers file. Protip always use visudo

    [–] Nithanim@programming.dev 1 points 7 months ago* (last edited 7 months ago)

    Jumping from the default kernel with zfs to the xanmod kernel using a manually compiled version of zfs. I don't rememeber a whole lot but it was quite... interesting. Next would be a suddenly vanished efi partition and my f* mainboard refusing to boot ZBM.

    Bonus: my currently still unfixed problem is a very weird freezing/stuttering of the whole OS and the only (useless) "lead" I have is workqueue: fill_page_cache_func hogged CPU for >10000us 4 times, consider switching to WQ_UNBOUND

    [–] raspberriesareyummy@lemmy.world 1 points 7 months ago

    Fast data transmission via TCP over a lossy link.

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