Bug 1021337

Description of problem:
Ubuntu guest sometimes fail to S4

Version-Release number of selected component (if applicable):
kernel-2.6.32-422.el6.x86_64
qemu-kvm-rhev-0.12.1.2-2.412.el6.x86_64
vgabios-0.6b-3.7.el6.noarch
seabios-0.6.1.2-28.el6.x86_64
ubuntu 12.04 - server


How reproducible:

2 /10

Steps to Reproduce:
1./root/staf-kvm-devel/autotest-devel/client/tests/virt/qemu/qemu -monitor stdio \
    -S \
    -name 'virt-tests-vm1' \
    -nodefaults \
    -chardev socket,id=qmp_id_qmpmonitor1,path=/tmp/monitor-qmpmonitor1-20131018-012515-LK8f8RtO,server,nowait \
    -mon chardev=qmp_id_qmpmonitor1,mode=control \
    -chardev socket,id=serial_id_serial1,path=/tmp/serial-serial1-20131018-012515-LK8f8RtO,server,nowait \
    -device isa-serial,chardev=serial_id_serial1 \
    -chardev socket,id=seabioslog_id_20131018-012515-LK8f8RtO,path=/tmp/seabios-20131018-012515-LK8f8RtO,server,nowait \
    -device isa-debugcon,chardev=seabioslog_id_20131018-012515-LK8f8RtO,iobase=0x402 \
    -device ich9-usb-uhci1,id=usb1,bus=pci.0,addr=0x4 \
    -drive file='/root/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/ubuntu-12.04-server-64.qcow2',index=0,if=none,id=drive-ide0-0-0,media=disk,cache=none,snapshot=off,format=qcow2,aio=native \
    -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0 \
    -device e1000,netdev=idOaE0A8,mac='9a:f6:f7:f8:f9:fa',bus=pci.0,addr=0x3,id='idu6YVwB' \
    -netdev tap,id=idOaE0A8,vhost=on \
    -m 1024 \
    -smp 2,maxcpus=2,cores=1,threads=1,sockets=2 \
    -cpu 'SandyBridge' \
    -M rhel6.5.0 \
    -device AC97,addr=0x5 \
    -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1 \
    -vnc :0 \
    -vga cirrus \
    -rtc base=utc,clock=host,driftfix=slew  \
    -boot order=cdn,once=c,menu=off   \
    -global PIIX4_PM.disable_s4=0 \
    -no-kvm-pit-reinjection \
    -device virtio-balloon-pci \
    -enable-kvm

2. ubuntu# echo disk > /sys/power/state
3.

Actual results:
guest just wont output anything, neither screen nor console, at least for 10 mins

Expected results:
guset s4 success

Additional info:


host info:
processor       : 7
vendor_id       : GenuineIntel
cpu family      : 6
model           : 42
model name      : Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
stepping        : 7
cpu MHz         : 1600.000
cache size      : 8192 KB
physical id     : 0
siblings        : 8
core id         : 3
cpu cores       : 4
apicid          : 7
initial apicid  : 7
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid
bogomips        : 6784.20
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

[root@localhost virt]# free -m
             total       used       free     shared    buffers     cached
Mem:          7750       1347       6402          0        141        232
-/+ buffers/cache:        973       6776
Swap:        57343         50      57293