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Ubuntu version - 23.04 Laptop - HP Elitbook 840 g3 Processor - i7 6th generation RAM - 24GB DDR4 SSD - Samsung EVO Plus 970 M.2 (500GB)

My Ubuntu is installed on the M.2 along with Windows 11. Win11 seems fast enough but Ubuntu is lagging and very slow to open even a directory, terminal, browser. What can be the cause of this issue?

I have updated from Update manager and from terminal using sudo apt-get update && apt-get upgrade -y

Here is the output of recent journalctl entries: https://pastebin.com/4z5XwNbB

Archisman Panigrahi
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ShahadatRafi
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  • Do you have a dedicated graphics card? If so, try changing the driver in "Additional Drivers" tab in the "Software & Updates" app, and reboot. – Archisman Panigrahi Jun 07 '23 at 05:35
  • Also, check journalctl logs with the command journalctl -r. Can you post them in pastebin and share the link? – Archisman Panigrahi Jun 07 '23 at 05:36
  • @ArchismanPanigrahi No I don't have any dedicated graphics card. journalctl -r provides hundreds of lines in output. How can I copy all of them for you? Shareing in pastebin is not a problem at all. – ShahadatRafi Jun 07 '23 at 05:43
  • Try journalctl -r > output.txt. That would save the output to the file output.txt. Then, upload the contents of that file to pastebin (in case that is too large, we would need only the recent logs - let us know). – Archisman Panigrahi Jun 07 '23 at 06:11
  • E.g., if the file is too big, to get the last 2000 lines, enter the command journalctl -n 2000 > output.txt. If there are any major issues, it should show up in those 2000 lines – Archisman Panigrahi Jun 07 '23 at 06:13
  • Here you are.. https://pastebin.com/4z5XwNbB – ShahadatRafi Jun 07 '23 at 06:25
  • I saw a lot of PCI bus errors. Try this https://askubuntu.com/a/1041830/124466 I don't know if it would help. Please let us know if it works – Archisman Panigrahi Jun 07 '23 at 15:42
  • Okay I'll let you know. BTW thanks a million... – ShahadatRafi Jun 07 '23 at 15:53
  • Also, some people found similar issues in 23.04 https://www.reddit.com/r/Ubuntu/comments/141zjre/anyone_else_find_2304_slow_compared_to_2204/ Try 22.04 from a live USB, if it does not have these issues, just install it and stick to it – Archisman Panigrahi Jun 07 '23 at 16:34
  • Hi @ArchismanPanigrahi here is the journalctl file after following the instruction from your given link. https://pastebin.com/8tt0ZCjg

    Do you still see any issue?

     – ShahadatRafi Jun 08 '23 at 16:02
  • I still see the same error. I don't know if this error causes the slowness. I don't think I can help you further in this matter. Hope someone with more experince finds this post. – Archisman Panigrahi Jun 08 '23 at 16:04
  • I understand. You already helped me a lot. I see my Ubuntu is at least 25% faster than before. BTW what is the best place to ask question to get rid of this issue? – ShahadatRafi Jun 08 '23 at 16:08
  • This is usually the best place. You can also ask at https://discourse.ubuntu.com/ – Archisman Panigrahi Jun 08 '23 at 18:37
  • Other things to try: Check if you have the same kind of lag in Manjaro from a live USB https://manjaro.org/. Also try Ubuntu 22.04 from a live USB – Archisman Panigrahi Jun 08 '23 at 18:39

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