Thank you for these tips. I will try a few things out and report back my findings.
On 07/01/2008, Gavin McCullagh <[EMAIL PROTECTED]> wrote: > > Hi, > > On Mon, 07 Jan 2008, Krsnendu dasa wrote: > > > I am experiencing an unusual problem. Occasionally (every 15 mins or so) > all > > the terminals just disconnect. The terminals need restarting before they > > work again. > > What you say all, you mean every thin client connected to the server? > > Every 15 minutes is pretty nasty. I guess at least it's easy enough to > repeat if you're testing. > > You say the clients need restarting and I gather the server doesn't. Can > you ping a thin client after this happens (ie without rebooting it)? If > you press <ctrl><alt><backspace> is that enough to restart the thin > client? > > > In what I think may be a related issue, some times when someone is > logged in > > their terminal freezes and the panel at the bottom of the screen which > shows > > which windows are open just has three tabs that all say untitled window. > > Have you had opportunity to watch top for a few minutes and see does some > process go wild around this point? > > > Background: I am using 32 Edubuntu 7.04 on Intel Quad Core. 4 Gb RAM. I > am > > using directx ldm and smbldap. > > Would it be possible for you to try not using direct-x and go back to the > default ssh method? > > > I am using a 100/1000 unmanaged switch which feeds 10/100 switches in > each > > class. > > > > Things I have already tried. > > At first I thought it could be the 1000 switch, so I swapped it for > another > > one, but the problem remains. > > Was it another similar switch? Could it be a problem between the > switches? > > > Possible solutions: > > Could upgrading to Gutsy help? > > It's hard to say without knowing what the cause of the problem is. > > > Could it be the network card in the server? > > Sounds plausible. > > > Can someone help me debug this? Are there any log files I can check to > trace > > the origin of this problem? > > Yes: > /var/log/syslog > /var/log/messages > /var/log/kern.log > /var/log/daemon.log > > > Thanks for any help. This is really frustrating, because I had a very > stable > > system with K12LTSP 6, and now with Edubutnu 7.04 I have having quite a > few > > problems. > > How long have you had this problem? You've been using 7.04 for a while, > right? Has it always happened? Has anything changed to prompt this? > > Gavin > > > -- > edubuntu-users mailing list > [email protected] > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/edubuntu-users >
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