VM not booting anymore after Ubuntu upgrade

["André Weidemann" <Andre.Weidemann@web.de>]

Hi,
I recently upgraded my machine from Ubuntu 9.10 to 10.4 (x86_64).
Ever since I upgraded my machine I cannot get qemu-kvm to start again.

I did not install the kvm package provided by Ubuntu. Instead I pulled 
todays git from git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git and 
ran ./configure && make -j6 && make install.
The configure output can be found here: http://pastebin.org/447003

I am using the following command line to boot qemu-kvm:

qemu-system-x86_64 -vnc :2 -k de -m 1024 -drive file=/dev/sda,if=ide,index=0

When connecting to the VNC console I only get a black screen.

I did an strace -p $(pidof qemu-system-x86_64) and I only see those 
lines looping endlessly:

timer_gettime(0, {it_interval={0, 0}, it_value={0, 0}}) = 0
timer_settime(0, 0, {it_interval={0, 0}, it_value={0, 250000}}, NULL) = 0
timer_gettime(0, {it_interval={0, 0}, it_value={0, 225694}}) = 0
select(14, [5 8 10 11 13], [], [], {1, 0}) = 1 (in [11], left {0, 999997})
read(11, "\1\0\0\0\0\0\0\0", 512)       = 8
select(14, [5 8 10 11 13], [], [], {1, 0}) = 1 (in [13], left {0, 999876})
read(13, 
"\16\0\0\0\0\0\0\0\376\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 
128) = 128
rt_sigaction(SIGALRM, NULL, {0x49f430, ~[KILL STOP RTMIN RT_1], 
SA_RESTORER, 0x7f145a4c48f0}, 8) = 0
write(12, "\1\0\0\0\0\0\0\0", 8)        = 8
read(13, 0x7fff5dbaa570, 128)           = -1 EAGAIN (Resource 
temporarily unavailable)


Can anyone help me on what is going (wr)on(g) here?

Thank you in advance
  André