Wheezy kernel does not boot on HP zx6000
Hi,
today I upgraded a HP zx6000 from squeeze to wheezy and ran into a major
showstopper. The kernel installed by linux-image-mckinley
(linux-image-3.2.0-4-mckinley 3.2.46-1+deb7u1) will not boot on my machine.
The machine has two of the following CPUs in it:
family : 31
model : 1
model name : Madison
revision : 5
archrev : 0
features : branchlong
cpu number : 0
cpu regs : 4
cpu MHz : 1400.000
itc MHz : 1400.000000
By "will not boot" I mean that:
1) immediately after ELILO loads the kernel and initrd I see no messages
and the system appears to freeze.
2) after about 60 seconds the diagnostic LEDs on the front panel change to
System - blinking, RED and LED 2 - on, RED and the system reboots.
According to the manual this is a "System firmware hang or system fault".
The system still boots up OK with the squeeze kernel (2.6.32-48squeeze3).
Presumably I should report this as a serious / grave bug against the
linux-image packages, but before I do that I'd like to get some advice on
how I can try and diagnose this, if at all?
Is there any way to bring up some kind of "early console" in the kernel to
try and get a handle on what might be going wrong? Can this be done using a
serial console?
Thanks,
Martin
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