I, too, had this problem - caused by an unknown dhcp server on the network.
The clients were picking up an address and then it went wrong.
I also once had a similar issue with an old netgear hub (something to do
with auto-negotiation failing) - it only was a problem at *boot* and
*only*with ltsp clients. Might be worth swapping it out if you have
another to
hand.
--
Matt
On 15 July 2013 22:22, James Butler <stupidscr...@gmail.com> wrote:
> Thank you for the reply.
>
> My setup is simply the Ubuntu LTSP box connected via 1 NIC to a hub, and a
> client connected by a single NIC to the same hub.
>
> There are no other computers/routers connected, so I assume that the DHCP
> server on the Ubuntu box is the only one active.
>
> Please note that each client successfully receives an address from the
> DHCP server on the Ubuntu box, and each one successfully makes it past the
> TFTP process.
>
> I'd like to add that the last command visible before the screen flickers
> and I enter initramfs is:
> <code>
> Trying to load: pxelinux.cfg/default [ok]
> </code>
>
> So it gets that far and finds the file on the Ubuntu box ... it just craps
> out after that.
>
> I'm guessing at this point, due to the consistency of the messages I
> receive, that the problem is not with the clients, but with something on
> the Ubuntu box.
>
>
>
> On Mon, Jul 15, 2013 at 1:01 PM, James McQuillan <j...@mcquil.com> wrote:
>
>> is there any chance you have 2 DHCP servers on your network?
>>
>> perhaps once DHCP server is providing the config that is used during the
>> PXE phase, and a different DHCP server is providing different values to the
>> kernel.
>>
>>
>> Jim McQuillan
>> j...@ltsp.org
>>
>>
>> On Mon, Jul 15, 2013 at 3:47 PM, James Butler <stupidscr...@gmail.com>wrote:
>>
>>> Master LTSP System: HP Proliant 4-drive RAID (1.4TB total), 12GB RAM
>>> Thin Clients: Dell Optiplex (old), Sony Vaio (2012), HP Pavillion (2013)
>>> Connection: Proliant eth0 into Netgear hub, Thin client eth0 into same
>>> Netgear hu
>>> (exactly as shown in the UbuntuLTSP/LTSPWiring diagram from the docs
>>> wiki)
>>>
>>> I've been trying to get LTSP going for several days, using both Ubuntu
>>> LTS 12.04 and now Edubuntu LTS 12.04.
>>>
>>> The OS installs fine, no problems in either case, but the LTSP
>>> installation is ... problematic, to say the least.
>>>
>>> There is no problem for the clients to get an IP address from the DHCP
>>> server, and they all log in via TFTP.
>>>
>>> However, in every case, seemingly no matter which config file I modify
>>> or how my stuff is connected, I can only boot the thin clients into the
>>> BusyBox initramfs ... never into a graphical interface, and I always
>>> receive the same messages, viewed by pressing CTL+ALT+F7 once I'm in
>>> initramfs regardless of the machine.
>>>
>>> Here are the messages I receive in their entirety (CTL+ALT+F7). Same
>>> message whether I do a fresh install and try to connect without messing
>>> with anything or after any of my multiple attempts to resolve the problem:
>>> <code>
>>> No interfaces found! Aborting...
>>> ipconfig: no devices to configure
>>> ipconfig: no devices to configure
>>> ipconfig: no devices to configure
>>> ipconfig: no devices to configure
>>> ipconfig: no devices to configure
>>> ipconfig: no devices to configure
>>> ipconfig: no devices to configure
>>> ipconfig: no devices to configure
>>> ipconfig: no devices to configure
>>> ipconfig: no devices to configure
>>> /scripts/local-top/nbd: .: line 34: can't open '/tmp/net-*.conf'
>>> mount: mounting /dev/nbd0 on /root failed: Input/output error
>>> /scripts/init-bottom/ltsp: line 27: panic: not found
>>> chroot: can't execute '/usr/bin/test/': No such file or directory
>>> mount: mounting /root on /rofs failed: Invalid argument
>>> mount: mounting /rofs on /root/rofs failed: Invalid argument
>>> cp: can't stat '/tmp/net-*.conf': No such file or directory
>>> mount: mounting /dev on /root/dev failed: No such file or directory
>>> mount: mounting /sys on /root/sys failed: No such file or directory
>>> mount: mounting /proc on /root/proc failed: No such file or directory
>>> Target filesystem doesn't have requested /sbin/init-ltsp.
>>> No init found. Try passing init= bootarg.
>>> </code>
>>>
>>> I do realize that this indicates a failure to accomplish things AFTER a
>>> failure to connect (so things didn't get found because there was no
>>> connection) ...
>>>
>>> HOWEVER ... did not the client connect and get an address from DHCP and
>>> then, further, successfully log in through TFTP?
>>>
>>> It did ... so why the failure following the TFTP exchange? What's it
>>> looking for?
>>>
>>> I have tried everything I could find online, in any documentation and
>>> through searching, including:
>>>
>>> - Install NFS/NBD server
>>> - Modify /etc/ltsp/dhcpd.conf with every conceivable variant (but not a
>>> problem to get an IP via DHCP)
>>> - Modify /tftp/ltsp/lts.conf with many variants
>>> - Rebuild client, update sshkeys/image
>>>
>>> and many more over the past several days. I have also re-installed both
>>> of the OSs at least 5 times, first letting them setup LTSP for me and then
>>> with me setting it up manually after the main OS was installed.
>>>
>>> I had high hopes for Edubuntu, realizing that it is a distro intended
>>> for non-admins, but I am in the same spot.
>>>
>>> I have found no messages online showing the same errors as I am
>>> receiving ... most talk about a kernel panic or network card drivers ... so
>>> I am posting here.
>>>
>>> I super-appreciate any help at all resolving this problem. Note that the
>>> links to the Edubuntu troubleshooting docs are non-functional.
>>>
>>> Thanks in advance for anything at all.
>>>
>>>
>>> ------------------------------------------------------------------------------
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>>> _____________________________________________________________________
>>> Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
>>> https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
>>> For additional LTSP help, try #ltsp channel on irc.freenode.net
>>>
>>>
>>
>>
>> ------------------------------------------------------------------------------
>> See everything from the browser to the database with AppDynamics
>> Get end-to-end visibility with application monitoring from AppDynamics
>> Isolate bottlenecks and diagnose root cause in seconds.
>> Start your free trial of AppDynamics Pro today!
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>> _____________________________________________________________________
>> Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
>> https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
>> For additional LTSP help, try #ltsp channel on irc.freenode.net
>>
>>
>
>
> ------------------------------------------------------------------------------
> See everything from the browser to the database with AppDynamics
> Get end-to-end visibility with application monitoring from AppDynamics
> Isolate bottlenecks and diagnose root cause in seconds.
> Start your free trial of AppDynamics Pro today!
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> _____________________________________________________________________
> Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
> https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
> For additional LTSP help, try #ltsp channel on irc.freenode.net
>
>
------------------------------------------------------------------------------
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Get end-to-end visibility with application monitoring from AppDynamics
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