Bug 1040319

Description of problem:
Boot up a win8 guest on RHEL7 (or even RHEL6.5) host with "-M rhel6.4.0" machine type, guest will hit the following problems: (1) guest could boot up, however the screen resolution changes to 640x480 and the desktop has no colour (2) guest fails to boot up. Screenshot will be uploaded.

Version-Release number of selected component (if applicable):
kernel-3.10.0-57.el7.x86_64
qemu-kvm-1.5.3-21.el7.x86_64
seabios-bin-1.7.2.2-4.el7.noarch

How reproducible:
Always

Steps to Reproduce:
1. Boot up a win8 guest with "-M rhel6.4.0" machine type. eg:

 /usr/libexec/qemu-kvm -cpu SandyBridge -M rhel6.4.0 -enable-kvm -m 4096 -smp 2,sockets=2,cores=1,threads=1 -name rhel7.0-64 -uuid 9a0e67ec-f286-d8e7-0548-0c1c9ec93009 -nodefconfig -nodefaults -monitor stdio -rtc base=utc,clock=host,driftfix=slew -no-kvm-pit-reinjection -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x7 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x4 -drive file=/home/win8-32-virtio-el6.qcow2,if=none,id=drive-disk0,format=qcow2,cache=none,id=disk0 -device virtio-blk-pci,bus=pci.0,addr=0x8,drive=drive-disk0,id=disk-0  -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,drive=drive-ide0-1-0,bus=ide.0,unit=1,id=scsi-cdrom -netdev tap,id=hostnet0,vhost=on,fd=4 4<>/dev/tap4 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=ee:e7:9c:92:1e:f5,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev socket,id=channel1,path=/tmp/helloworld1,server,nowait -device virtserialport,chardev=channel1,name=port1,bus=virtio-serial0.0,id=port1 -chardev socket,id=channel2,path=/tmp/helloworld2,server,nowait -device virtserialport,chardev=channel2,name=port2,bus=virtio-serial0.0,id=port2 -device usb-tablet,id=input0 -vnc :10 -vga std -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6  -drive if=none,id=drive-fdc0-0-0,format=raw,cache=none -global isa-fdc.driveA=drive-fdc0-0-0 -qmp tcp:0:5555,server,nowait -global PIIX4_PM.disable_s3=0 -global PIIX4_PM.disable_s4=0 

2. 
3.

Actual results:
Guest (1) fails to boot up or (2) screen resolution has problem.


Expected results:
Guest could boot up with correct screen view.

Additional info:
Host info:

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 42
model name	: Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz
stepping	: 7
microcode	: 0x29
cpu MHz		: 2793.148
cache size	: 6144 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
initial apicid	: 6
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 nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips	: 6186.35
clflush size	: 64
cache_alignment	: 64
address sizes	: 36 bits physical, 48 bits virtual
power management: