Hi, I've just ran into this exact same problem after upgrading a zx6000 system I run from squeeze.
The machine has two identical 1.4Ghz processors installed: processor : 0 vendor : GenuineIntel arch : IA-64 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 BogoMIPS : 2097.15 siblings : 1 physical id: 0 The symptoms are exactly the same as you describe. Snipped from my original email to debian-ia64@l.d.o: 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). I'm going to up the priority of this bug to "critical" since AFAICT this breaks the entire system. Also, the bug has been confirmed by Lennert van Alboom when booting this kernel in an Integrity VM on a zx6000, for more details see here: http://lists.debian.org/debian-ia64/2013/08/msg00009.html Regards, Martin
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