pxe livecd

[Carl Karsten]

I think there is a bug report in here somewhere....

using https://wiki.ubuntu.com/LiveCDNetboot
I am somewhat able to boot the desktop live cd over pxe, but it never gets into 
X or a prompt.  but... if i boot into single, drop to a root propt, then run 
startx, it boots into X, and then hangs.

This happens on 4 different boxes, including qemu, all of which run intrepid 
just fine.

When I do it in qemu, after a min or 2 of blank display, it goes back to text 
mode and I see:

m Starting bluetooth                                        [ OK ]
Starting Network connection manager daemon: NetworkManager.
Starting Network connection manager daemon: NetworkManager
Starting GNOME Display Manager...
[  675.386467]  INFO: task loopO:2556 blocked for more than 120 seconds.
[  675.387060]  "echo O > /proc/sys/kernel/hung_task_timeout_secs" disables this 
message.
[  675.390675]  INFO: task NetworkManager:6380 blocked for more than 120 seconds.
[  675.39O798]  "echo O > /proc/sys/kernel/hung_task_timeout_secs" disables this 
message.
[  675.393575]  INFO: task gdm:6406 blocked for more than 120 seconds.
[  675.393671]  "echo O > /proc/sys/kernel/hung_task_timeout_secs" disables this 
message.

The 6 lines then repeat every 120 seconds.

Here is my config:

wget -N http://cdimage.ubuntu.com/daily-live/current/intrepid-desktop-i386.iso

  mount
/var/lib/tftpboot/ubuntu/intrepid/intrepid-desktop-i386.iso on 
/var/lib/tftpboot/ubuntu/intrepid/desktop type iso9660 (rw,loop=/dev/loop2)

# /etc/exports
/var/lib/tftpboot/ubuntu/intrepid/desktop 
192.168.1.0/255.255.255.0(async,no_root_squash,no_subtree_check,ro)

# /var/lib/tftpboot/pxelinux.cfg/default
label ubuntu-intrepid-livecd
         kernel ubuntu/intrepid/desktop/casper/vmlinuz
         append initrd=ubuntu/intrepid/desktop/casper/initrd.gz boot=casper 
netboot=nfs nfsroot=192.168.1.7:/var/lib/tftpboot/ubuntu/intrepid/desktop/ 
root=/dev/nfs single --

The details of my qemu setup: https://wiki.ubuntu.com/QemuPxe

You can see the behavior in qemu without having to setup the pxe environment by 
just loading the casper kernel into qemu:

carl at dell29:~/temp$ sudo qemu -m 400 -net tap -net nic,model=pcnet hdb.qcow2 
-kernel /mnt/nfs/shaz/intrepid/casper/vmlinuz \
-initrd /mnt/nfs/shaz/intrepid/casper/initrd.gz \
-append "boot=casper netboot=nfs 
nfsroot=192.168.1.7:/var/lib/tftpboot/ubuntu/intrepid/desktop/ root=/dev/nfs 
single -- "

and as a control, this works fine:
$ qemu hda.qcow2 -cdrom intrepid-desktop-i386.iso -boot d


Carl K