Description of problem:

Login via serial console fails to accept password for a guest(F16) on an F16 host.The prompt doesn't even let you type the complete password as the Login/Entry fields are distorted.

NOTE: Login via serial console worked fine during F12-F13-F14 release time frame. This appears to be a regression.


Version-Release number of selected component (if applicable):

Fully updated host (KVM based virtualization)
====================
$ rpm -q util-linux-ng qemu-kvm libvirt python-virtinst plymouth
package util-linux-ng is not installed
qemu-kvm-0.15.1-3.fc16.x86_64
libvirt-0.9.6-2.fc16.x86_64
python-virtinst-0.600.0-5.fc16.noarch
plymouth-0.8.4-0.20110822.2.fc16.x86_64
====================
$ cat /etc/fedora-release 
Fedora release 16 (Verne)
$ 
====================

How reproducible:
All the time.

Steps to Reproduce:

1/ Create a guest using the below virt-install command-line
===================
virt-install --connect=qemu:///system \
    --network=bridge:br0 \
    --initrd-inject=/export/fed-minimal.ks \
    --extra-args="ks=file:/fed.ks console=tty0 console=ttyS0,115200 serial rd_NO_PLYMOUTH" \
    --name=fedora16-test \
    --disk /export/vmimgs/$domname.img,size=10 \
    --ram 2048 \
    --vcpus=2 \
    --check-cpu \
    --accelerate \
    --hvm \
    --location=/path/to/fedora/16/tree/ \
    --nographics 
===================
Fedora minimal kickstart I used -- http://kashyapc.fedorapeople.org/virt/fed-minimal.ks


2/ Reboot the guest and start the guest with serial console option.
====
$ virsh start --console fedora16-test
====
 
Actual results:
---------------

Output from the serial console:
==============
.
.
.
.
Started /etc/rc.local Compatibility.
Starting Terminate Plymouth Boot Screen...
Starting Wait for Plymouth Boot Screen to Quit...
Starting D-Bus System Message Bus...
Starting Login Service...
Started Console System Startup Logging.
Started Security Auditing Service.

Fedora release 16 (Verne)
Kernel 3.1.0-7.fc16.x86_64 on an x86_64 (ttyS0)

dhcp201-193 login: root
Password: 
Login incorrect

login: 
Password: 
Login incorrect

login: 
Password: 
Login incorrect

login: 

=================



Expected results:
------------------
Login via serial console interface should be successful


Additional info:
----------------
That's the Fedora-16 'guest' kernel command-line info. (note that I also disabled plymouth with the option rd_NO_PLYMOUTH to no avail) -- which worked during F13-F14 time frame.
====================
.
.
	linux	/vmlinuz-3.1.0-7.fc16.x86_64 root=/dev/mapper/vg_dhcp201193-lv_root ro rd.md=0 rd.lvm.lv=vg_dhcp201193/lv_swap rd.lvm.lv=vg_dhcp201193/lv_root text console=tty0  KEYTABLE=us quiet console=ttyS0,115200 rhgb rd.luks=0 rd_NO_PLYMOUTH LANG=en_US.UTF-8 serial SYSFONT=latarcyrheb-sun16 rd.dm=0 
	echo	'Loading initial ramdisk ...'
	initrd	/initramfs-3.1.0-7.fc16.x86_64.img
.
.
====================