It seems unlikely to me that this is a GRUB bug. The evidence suggests
that GRUB is simply not being loaded at all.
Here is the Syslinux documentation on LOCALBOOT, and note that the
permissible values for PXELINUX are *not* the same as for ISOLINUX:
LOCALBOOT type [ISOLINUX, PXELINUX]
On PXELINUX, specifying "LOCALBOOT 0" instead of a "KERNEL"
option means invoking this particular label will cause a local
disk boot instead of booting a kernel.
The argument 0 means perform a normal boot. The argument 4
will perform a local boot with the Universal Network Driver
Interface (UNDI) driver still resident in memory. Finally,
the argument 5 will perform a local boot with the entire PXE
stack, including the UNDI driver, still resident in memory.
All other values are undefined. If you don't know what the
UNDI or PXE stacks are, don't worry -- you don't want them,
just specify 0.
On ISOLINUX, the "type" specifies the local drive number to
boot from; 0x00 is the primary floppy drive and 0x80 is the
primary hard drive. The special value -1 causes ISOLINUX to
report failure to the BIOS, which, on recent BIOSes, should
mean that the next boot device in the boot sequence should be
activated.
In addition, the Syslinux 4.00 changelog says that -1 is also supported
for PXELINUX. However, 0x80 is out of spec for PXELINUX.
If the BIOS doesn't do what you want for any of these defined values,
then it is not at all clear to me that there is anything that we can do
about it. I don't know what to suggest.
** Package changed: grub2 (Ubuntu Maverick) => syslinux (Ubuntu
Maverick)
--
grub hangs at early booting after handoff from PXE
https://bugs.launchpad.net/bugs/625383
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