Ubuntu Server Not Responding From Outside

Dell / DIMENSION 2400
March 28, 2011 at 17:16:47
Specs: Ubuntu Server 10.10, 1.1 GHZ AMD
I have an Ubuntu Server 10.10 box running. I mainly use SSH through putty (Open-SSH on the server) for administration of the computer, but sometimes Open-SSH stops responding. If I log out from the server via SSH or at the terminal and leave it for a few hours, the server is completely unresponsive from the outside. I can't ping it, log in via SSH, open at HTTP connection from it, or anything. However, if I hit any key on the keyboard that is plugged into the machine then it will start responding from the outside again. And ideas?

~William
My Site: http://willstech.org/


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#1
March 28, 2011 at 19:22:21
Have you checked the powersave options in ubuntu?

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#2
March 28, 2011 at 19:42:42
Are there power save options in Ubuntu Server?

~William
My Site: http://willstech.org/


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#3
March 28, 2011 at 20:02:23
There is power saving package for ubuntu, that might be installed and maybe running. Also check the powersave setting in your system bios.

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#4
March 28, 2011 at 20:10:18
What would this package be called? Unless I'm Google'ing the wrong things, I can't find the name of this package anywhere.

~William
My Site: http://willstech.org/


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#5
March 28, 2011 at 21:15:28
I don't run Ubuntu so I don't know the name, but try powersave -c at console prompt, to see, what powersave policy is used, if powersave is active.

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#6
March 29, 2011 at 06:35:04
powersave is not installed

~William
My Site: http://willstech.org/


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#7
March 29, 2011 at 09:32:31
What's about the system bios settings for power saving?

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#8
March 29, 2011 at 18:24:34
There are none

~William
My Site: http://willstech.org/


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#9
March 29, 2011 at 19:25:56
Have you checked the log files, to figure out, what causes the interruption?

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#10
March 29, 2011 at 19:35:06
I already thought about that, but I have no idea where these log files would be or even which ones to check

~William
My Site: http://willstech.org/


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#11
March 29, 2011 at 19:45:08
Main logs are stored in /var/log directory.
Check the messages log file first.

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#12
March 29, 2011 at 20:28:04
I'm going to wait for it to do it again and then post the log of now until then!

~William
My Site: http://willstech.org/


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#13
March 30, 2011 at 01:24:33
You don't have to post the logs, you have to search the logs for hints.
Those logs can be very large.
You simply have to search the log entries of one day, where it happens, that you can't access the server and have to press any key at the server, to wake it up again.

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#14
June 2, 2011 at 14:12:43
I have experienced this before and it turned out to be a firewall in-between that was enforcing some strange policies regarding SSH traffic.

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