I have installed Ubuntu 16.04 alongside Windows 10. The Ubuntu partition has 419 GB, and another 8 GB to swap. My issue is that when the installation is finished, when I log in to Ubuntu, second by second the memory space is used without my installing anything.

Used 8,3G

Then after some minutes:

Used 11G

And then after a lot of minutes:

Used 48G

Used 55G

This happens until Ubuntu runs out of space. I reinstalled Ubuntu many times but it's still happening.


I used ncdu command and I get it


df -h

df -h

sudo find / -xdev -type f -size +100M

find size


syslog file


  • See askubuntu.com/questions/73160/… for tools to analyze disk usage. – N0rbert Jul 26 '18 at 15:01
  • Thanks for your response, but Im a really novice, so, I dont know what to do. I execute all commands that display in the links and the output is /var/log/syslog.1 /var/log/kern.log /var/log/syslog , I dont know what to do! – Carlos Andres Jul 27 '18 at 0:47
  • Is correct delete the files /var/log/syslog.1 /var/log/kern.log /var/log/syslog? – Carlos Andres Jul 27 '18 at 0:58
  • Youre right, I deleted it files and my memory space decreace again. How can I fix ? I dont know what more to do – Carlos Andres Jul 29 '18 at 7:13

Ok , I solved my issue. The first step was see what is the files which have a lot of disk space in my machine. For that, I executed this command suggested by dsstorefile1:

find / -xdev -type f -size +100M

Where the most file which have disk space occupied was:

/var/log/kern.log /var/log/syslog

Then, I opened the file syslog to see what is the issue which fill my syslog, and I find this issue:

PCIe Bus Error, id=00e8

So, searching in the internet, I came to the answer that gave me solution:

  1. edit /etc/default/grub and and add pci=noaer to the line starting with GRUB_CMDLINE_LINUX_DEFAULT. It will look like this: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pci=noaer"
  2. run "sudo update-grub"
  3. reboot

REFERENCE: "PCIe Bus Error, id=00e8" both 16.04 and 17.04

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.