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I just installed Ubuntu 14.10 on my external HD and everything works just fine (I haven't made any changes to the system files yet), but after a little while (I don't know how long, sometimes it's 15 min, sometimes 30 min) Ubuntu restarts on its own (no, I didn't have many processes running at the same time, most times I was just copying a file or watching a video on youtube)

I've already researched this but haven't found a solution yet and I don't know what I have to specify, since I'm new to Ubuntu...

Can anyone help me?

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  • Could you provide the research you've already done so we don't try things you've already tried? ;-)
    – Fabby
    Dec 5, 2014 at 0:36
  • Also check the syslog for that time, there is always some important info in there.
    – heemayl
    Dec 5, 2014 at 1:50
  • how do I do that? (btw, I haven't found any info yet) Here's my hw: Memory: 6.7 GiB Processor: 410 APU 410 APU with AMD Radeon R5 Graphics AMD A8-6410 APU with AMD Radeon R5 Graphics × 3 Graphics: Gallium 0.4 on AMD MULLINS OS type: 64-bit Disk: 97.6 GB
    – Gabriel Vale
    Dec 6, 2014 at 19:55
  • I got something form dmesg: [ 24.964475] systemd-logind[973]: Failed to start unit [email protected]: Unknown unit: [email protected] [ 24.964486] systemd-logind[973]: Failed to start user service: Unknown unit: [email protected] [ 24.971079] systemd-logind[973]: New session c1 of user lightdm. [ 24.971116] systemd-logind[973]: Linked /tmp/.X11-unix/X0 to /run/user/112/X11-display. [ 37.854929] systemd-logind[973]: Failed to start unit [email protected]: Unknown unit: [email protected] [ 37.854945] systemd-logind[973]: Failed to start user service: Unknown unit: [email protected]
    – Gabriel Vale
    Feb 2, 2015 at 20:34
  • here's the link with the full output: drive.google.com/file/d/0ByLU2bCAP7UdLUVqbzFOQ2owaHc/…
    – Gabriel Vale
    Feb 2, 2015 at 20:35

1 Answer 1

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You can check the syslog by entering this command in your terminal:

less /var/log/syslog

or, if you want to explore the result in your favorite text editor (Geany in this example) :

geany /var/log/syslog

(but you'll have to save the result elsewhere).

dmesg returns me the same message (systemd-logind[1114]: Failed to start unit [email protected]: Unknown unit: [email protected]), but I don't have Ubuntu restarting on its own, so I suppose it will be unnecessary to search in this direction...

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