System loks up after upgrade from 14.04 to 16.04 Post: 302979356

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Operating Systems Linux Ubuntu System loks up after upgrade from 14.04 to 16.04 Post 302979356 by migurus on Saturday 13th of August 2016 01:46:08 PM

08-13-2016

Registered User

any pointers on how to bring it up without X server (graphical UI)?

---------- Post updated at 05:34 PM ---------- Previous update was at 05:30 PM ----------

Quote:

Originally Posted by rbatte1

Would it be useful to post the "some more debug dump info." perhaps?

Yes, I understand that I show very little info, but I don't know what should I show, I was asking about it in my post - what can I show here to get help?

---------- Post updated 08-13-16 at 10:46 AM ---------- Previous update was 08-12-16 at 05:34 PM ----------

Per your suggestion, I brought system up, switched to console tty1 and stopped lightdm service. Then I just left system on overnight and in the morning I saw many soft lock up messages on the console. I tried sudo reboot, but it got locked and did not work, see log below:

Aug 13 10:01:30 XPS-8700 kernel: [40741.481197] NMI watchdog: BUG: soft lockup - CPU#5 stuck for 22s! [reboot:4965]

I am not sure if stopping lightdm service was enough for this experiment. Any suggestions, please?

migurus

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show_link

show link(1m)															     show link(1m)

NAME

       show link - Displays attribute information about the specified soft link

SYNOPSIS

       cdscp show link link-name [attribute-name] [with attribute-name = attribute-value]

ARGUMENTS

       The  full  name	of  a  specific soft link.  The last simple name can contain wildcard characters.  The name of a particular attribute; see
       Description for valid attribute names.  The value of a particular attribute.

DESCRIPTION

       The show link command displays the names and values of the attributes specified in attribute-name.  You can use a combination of attributes
       in  any	sequence  in  a  single command. Use a space to separate multiple attributes.  You can use a with attribute-name = attribute-value
       clause to limit output only to soft links whose attributes have values equal to the specified values.  A space must precede and follow  the
       = (equals sign).  If you do not supply any attributes, the command displays all attributes and their values. The following is a description
       of soft link attributes: Specifies the creation timestamp (CTS) of this soft link Specifies the full name of the directory,  object  entry,
       or other soft link to which the soft link points Specifies a timeout value after which the soft link is either checked or deleted Specifies
       the timestamp of the most recent update to an attribute of the soft link

   Privilege Required
       You must have read permission to the soft link.	If you specify a wildcard soft link name, you also need read permission to  the  directory
       that stores the soft link.

NOTE

       This command is replaced at Revision 1.1 by the dcecp command and may not be provided in future releases of DCE.

EXAMPLE

       The  following command displays the current values of all the attributes associated with the soft link /.:/sales/region1.  cdscp> show link
       /.:/sales/region1

			       SHOW
			   SOFTLINK   /.../abc.com/sales/region1
				 AT   1991-10-15-15:54:40
			    CDS_CTS = 1991-10-15-19:54:35.00000003/08-00-2b-1c-8f-1f
			    CDS_UTS = 1991-10-15-19:54:35.00000006/08-00-2b-1c-8f-1f
		     CDS_LinkTarget = /.../abc.com/sales/service

			       SHOW
			   SOFTLINK   /.../abc.com/sales/region1
				 AT   1991-10-15-15:54:41
			    CDS_CTS = 1991-10-15-19:54:36.00000077/08-00-2b-1c-8f-1f
			    CDS_UTS = 1991-10-15-19:54:36.00000009/08-00-2b-1c-8f-1f
		     CDS_LinkTarget = /.../abc.com/sales/software
		    CDS_LinkTimeout = :
			 Expiration = 1991-10-15-00:00:00.0
			  Extension = +1-00:00:00.000

RELATED INFORMATION

       Commands: create link(1m), delete link(1m), list link(1m), remove link(1m), set link(1m)

																     show link(1m)