3.4.1 suspend / hibernate resume not working.

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3.4.1 suspend / hibernate resume not working.

n4rC0t1C
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Hi guys,
i've read, a few threads ago, that suspend/resume should work on 3.4 kernels.
Actually it doesn't work for me, the system goes on suspend, keeping monitors on and power led blinking, but it never resumes, I always have to brutally shutdown it. CONFIG_XEN_ACPI_PROCESSOR is set.
Same thing it always did with previouses kernels.
It works flawlessy if I start the system without the xen hypervisor.
I was wondering, is there anyway to debug this? Any hints? Am I missing something?

I attach my dmesg log and xl info output.

Ubuntu 12.04
Linux thebeast 3.4.1-030401-generic #201206041411 SMP Mon Jun 4 18:12:24 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
host                   : thebeast
release                : 3.4.1-030401-generic
version                : #201206041411 SMP Mon Jun 4 18:12:24 UTC 2012
machine                : x86_64
nr_cpus                : 4
max_cpu_id             : 3
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 3292
hw_caps                : bfebfbff:28100800:00000000:00003f40:17bae3ff:00000000:00000001:00000000
virt_caps              : hvm hvm_directio
total_memory           : 8081
free_memory            : 996
sharing_freed_memory   : 0
sharing_used_memory    : 0
free_cpus              : 0
xen_major              : 4
xen_minor              : 2
xen_extra              : -unstable
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : Thu Jun 07 19:46:57 2012 +0100 25467:32034d1914a6
xen_commandline        : placeholder
cc_compiler            : gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
cc_compile_by          : ivobacco
cc_compile_domain      :
cc_compile_date        : Fri Jun  8 02:54:27 CEST 2012
xend_config_format     : 4

dmesg