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Re: [K12OSN] Slow Booting LTSP Clients - K12LTSP5EL



Stephen Crampton wrote:
In response to the problems with slow DHCP under Edubuntu, I've decided to
try and install the K12LTSP Centos 5EL.

I'm using the same machine.  I just switched hard drives (same make and
model).

I'm using the 6 install CDs (the install DVD would not burn on my system --
too big).

The installation stops and says I do not have any hard drives.  The BIOS
recognizes the hard drive and indeed I can boot from it.

The motherboard says M2V-MX SE on it.  I searched around and found reference
to a sata_via module.  I tried adding the module through the Centos
installation menu (where it says, "do you want to add any hardware
modules?").  However, the installation still fails a few screens later
(after I choose English language and keyboard and LTSP system).  It says
there is no hard drive again.

Please help.  I didn't mean to start flames between K12LTSP and Edubuntu.
I'm just trying to get a working system.  I have parents coming in on Monday
night, so I'm working this weekend to try and iron out the problem.  I would
like them to come away saying, "Wow, this is cool.  Why is the school
district spending money on Windows software?"

The quick fix would be to toss in a different SATA card if you have one sitting around, but it might be worth trying 'linux noapm noacpi'at the install disk's boot prompt.
https://www.centos.org/modules/newbb/viewtopic.php?viewmode=flat&order=ASC&topic_id=8588&forum=39&move=prev&topic_time=1179877975
indicates there was a bug in power management with that module - not sure if if would affect installs. This may be fixed in updates, so if you do get the install to work, do a 'yum update' to get the latest.

However, if your problem really has to do with concurrent network activity below what you'd expect to be a problem I doubt if the OS or distribution is the cause. I'd concentrate first on the shared parts of the network - which may just be your uplink port and the gig port of the switch. Use ethtool to check that the speed/duplex settings are correct on the linux side and the switch management tools to see that it matches and that you are not getting errors.

--
  Les Mikesell
   lesmikesell gmail com


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