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I'm using Ubuntu 22.04 LTS. Unexpectedly for me all operations with the file system stopped working. I tried ls /, df and nautilus - all of this command takes forever to execute. What happened to my OS?

I can't insert image because nautilus doesn't work.

vim and findmnt works as usual; I don't use any commands like sshfs, but sudo ls / works as usual.

dmesg -Hx output:

...
kern  :notice: [  +0,000007] audit: type=1400 audit(1695399711.961:212677): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :notice: [  +0,000013] audit: type=1400 audit(1695399711.961:212678): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :notice: [  +0,000035] audit: type=1400 audit(1695399711.961:212679): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :notice: [  +0,000028] audit: type=1400 audit(1695399711.961:212680): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :notice: [  +0,000044] audit: type=1400 audit(1695399711.961:212681): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :notice: [  +0,000028] audit: type=1400 audit(1695399711.961:212682): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :notice: [  +0,000052] audit: type=1400 audit(1695399711.961:212683): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :notice: [  +0,000028] audit: type=1400 audit(1695399711.961:212684): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :notice: [  +0,000044] audit: type=1400 audit(1695399711.961:212685): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :notice: [  +0,000028] audit: type=1400 audit(1695399711.961:212686): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un>
kern  :warn  : [  +7,435158] kauditd_printk_skb: 327 callbacks suppressed
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  • check dmesg -Hx for errors related to devices.
    – Marcus Müller
    Commented Sep 22, 2023 at 16:07
  • @MarcusMüller, Output looks like this: kern :notice: [ +0,000001] audit: type=1400 audit(1695398720.974:174754): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un> kern :notice: [ +0,000055] audit: type=1400 audit(1695398720.974:174755): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un> kern :warn : [ +5,015120] kauditd_printk_skb: 181 callbacks suppressed
    – Minuta18
    Commented Sep 22, 2023 at 16:18
  • can't read that without the line breaks. Also, that just seems to be like the last three messages. PLease edit your question to show things that aren't about ptrace not being allowed for discord.
    – Marcus Müller
    Commented Sep 22, 2023 at 16:20
  • kern :notice: [ +0,000046] audit: type=1400 audit(1695398946.477:183354): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.discord.discord" pid=4642 comm="Utils" requested_mask="read" denied_mask="read" peer="un> ........................ kern :warn : [ +5,000326] kauditd_printk_skb: 333 callbacks suppressed........................... There are probably nothing instead of discord
    – Minuta18
    Commented Sep 22, 2023 at 16:25
  • How about you uninstall discord and reboot, and see what you get then?
    – Marcus Müller
    Commented Sep 22, 2023 at 16:30

1 Answer 1

Reset to default
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After reloading my computer four times, all started to work fine. There are some actions I do before:

  • Install dbus-launch
  • Updated all
  • Fixed warning while I tried sudo dpkg configure -a
  • Reinstall discord
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  • 1
    If this is a clarification to the question, it should go in the question, not as an answer. If it is an actual answer, please clarify that this solved the issue and if possible also explain why this solved the issue.
    – Kusalananda ♦
    Commented Sep 22, 2023 at 19:07

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