[K12OSN] users kicked out on 4.2.1

Julius Szelagiewicz julius at turtle.com
Fri Apr 15 17:27:45 UTC 2005


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

> Julius Szelagiewicz wrote:
>> On Thu, 14 Apr 2005, Eric Harrison wrote:
>>
>>
>>>Julius Szelagiewicz wrote:
>>>
>>>
>>>>Apr 13 10:12:45 solinden gdm[31911]: Ping to ws078.turtle.com:0 failed,
>>>>whacking display!
>>>
>>><snip>
>>>
>>>>The workstation where user jszoke was forcibly logged out is ws078.
>>>
>>>There is the guilty party right there. If the server cannot ping a
>>>terminal, after a period of time it assumes the terminal is dead and
>>>kills off the session. The default for this is 15 seconds.
>>>
>>>You can change this value in /etc/X11/gdm/gdm.conf:
>>>
>>>PingIntervalSeconds=15
>>>
>>
>> This forces me to ask some questions: 1. why it can not be pinged - when
>> I
>> ping it it is always fine. 2. why when this happens -nobody- can log in.
>> Of course the answer to those question is "network problem", but I had
>> no
>> changes to the network from before the upgrade. julius
>>
>
> At least it helps narrow down the problem set.
>
> The first thing that jumps to my mind is an ethernet driver problem. Or
> maybe the RJ45 cable got kinked as you were moving the system around.
> Etc, etc.
>
> I'd run dmesg, ifconfig, and scan /var/log/messages looking for anything
> related to the ethernet. If it is connected into a managed switch, I'd
> check the logs there & stats on the port. Etc, etc.
>
>
> I actually had this happen to me about an hour ago! I have an old junk
> Netgear hub shoved under my desk that started spontaneously rebooting. I
> fixed mine by plugging the terminal directly into the wall ;-)
>
> -Eric

OK, now I'm reasonably sure it is not network problem, or that the message
is misleading. I've been running ping to the station continously, once a
second, with no packet loss. The ping interval in gdm.conf is set to 30
seconds. the terminal went blank and eventually returned to login menu.
Below is the tail end of ping display and all the lines pertaining to the
workstation in question from /var/log/messages. There were no errors or
warnings reported in the switch logs. Any suggestions will be much
appreciated. julius

[julius at solinden ~]$ more error
64 bytes from ws076.turtle.com (192.168.5.76): icmp_seq=13497 ttl=64
time=0.165ms
64 bytes from ws076.turtle.com (192.168.5.76): icmp_seq=13498 ttl=64
time=0.175ms

- --- ws076.turtle.com ping statistics ---
13499 packets transmitted, 13499 received, 0% packet loss, time 13502930ms
rtt min/avg/max/mdev = 0.129/0.261/6.629/0.235 ms, pipe 2
[julius at solinden ~]$

[root at solinden ~]#  grep ws076 /var/log/messages|grep "Apr 15"
Apr 15 05:59:32 solinden rpc.mountd: authenticated mount request from
ws076.turtle.com:657 for /opt/ltsp/i386 (/opt/ltsp/i386)
Apr 15 05:59:34 ws076 syslogd started: BusyBox v0.60.4
(2004.11.12-23:02+0000)
Apr 15 05:59:39 ws076 init: Entering runlevel: 5
Apr 15 06:00:14 ws076 ltspinfod: Connection from 192.168.5.254 port 41299
Apr 15 06:26:06 solinden gdm[22288]: Ping to ws076.turtle.com:0 failed,
whacking display!
Apr 15 06:34:41 ws076 ltspinfod: Connection from 192.168.5.254 port 41407
Apr 15 06:40:27 solinden rpc.mountd: authenticated mount request from
ws076.turtle.com:657 for /opt/ltsp/i386 (/opt/ltsp/i386)
Apr 15 06:40:30 ws076 syslogd started: BusyBox v0.60.4
(2004.11.12-23:02+0000)
Apr 15 06:40:34 ws076 init: Entering runlevel: 5
Apr 15 06:41:29 ws076 ltspinfod: Connection from 192.168.5.254 port 32789
Apr 15 06:53:31 solinden rpc.mountd: authenticated mount request from
ws076.turtle.com:657 for /opt/ltsp/i386 (/opt/ltsp/i386)
Apr 15 06:53:33 ws076 syslogd started: BusyBox v0.60.4
(2004.11.12-23:02+0000)
Apr 15 06:53:37 ws076 init: Entering runlevel: 5
Apr 15 06:53:41 solinden gdm[4581]: gdm_slave_xioerror_handler: Fatal X
error - Restarting ws076.turtle.com:0
Apr 15 07:03:59 ws076 ltspinfod: Connection from 192.168.5.254 port 32909
Apr 15 07:53:33 ws076 -- MARK --
Apr 15 08:53:33 ws076 -- MARK --
Apr 15 09:53:33 ws076 -- MARK --
Apr 15 10:53:33 ws076 -- MARK --
Apr 15 11:44:21 solinden gdm[4777]: Ping to ws076.turtle.com:0 failed,
whacking display!
Apr 15 11:53:33 ws076 -- MARK --
Apr 15 12:53:34 ws076 -- MARK --
[julius at solinden ~]$



-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.3 (GNU/Linux)

iD8DBQFCX/mR2LhlZOaj6vURAvQmAJ9dOIWL0Sb4MJaZItefDSETteAfsgCcCtgf
V5G4Jms5PXCUcR0NM4a2Q0I=
=wyML
-----END PGP SIGNATURE-----




More information about the K12OSN mailing list