Quoting Richard Kweskin:

> Normally my suspicions would fall on the hardware. In this case when
> booting the same server from another partition with Ubuntu 12.04 with
> ltsp 5.4.3-1+r2462+p1163~precise1, also without separate chroot, the
> same client with all the same hardware (router, cables etc.) boots
> fine. I am writing this mail from the client now.

I now have more info to share:

The client is an old laptop with 512 MB of ram and so is fat. The  
video ram is 16384 kBytes. The cpu is an old celeron coppermine  
(pentium 3.) The bios is set to boot pxe using the onboard nic.

I edited in /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default so that  
the append line is:

append ro initrd=initrd.img-3.2.0-4-486 init=/sbin/init-ltsp root=/dev/nbd0

Booting the client (skipping the first several lines) the last few  
from the client are:

Begin: Running /scripts/local-premount ... done.
Begin: Running /scripts/local-bottom ... done.
done.
Begin: Running /scripts/init-bottom ... modprobe: module overlayfs not  
found in modules.dep
[    7.518843] aufs: module is from the staging directory, the quality  
is unknown, you have been warned.
[    7.533145] aufs 3.2-20130204
done.

At this point the client waits but without an indication or log to  
point to what it waits for. Is it possible that something happens in  
or with the script /sbin/init-ltsp? The client's kernel has not  
panicked. The server can ping the client but ssh is refused. On the  
client when pressing Alt+SysRq+r the client responds:

[   53.064089] SysRq : Keyboard mode set to system default

When pressing Alt+SysRq+e the client responds:

[   59.122614] SysRq : This sysrq operation is disabled.

When pressing Alt+SysRq+i the client responds:

[   65.000246] SysRq : This sysrq operation is disabled.

When pressing Alt+SysRq+s the client responds:

[   72.204238] SysRq : Emergency Sync
[   72.204454] Emergency Sync complete

Richard


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