I had the same results. I can boot the Debian vmlinuz-2.6.26-1-versatile kernel perfectly, but when I try to boot the Ubuntu vmlinuz-2.6.28-4-versatile I get no video output. I cannot even get console output with -monitor stdio. I tested both kernels with no initrd.img and no hard drive. Debian kernel returns kernel panic about no rootfs. The Ubuntu kernel still returns the same results. I am using Ubuntu 8.10 i386 (2.6.27-9-generic) and Qemu version 0.9.1-5ubuntu3.
I had the same results. I can boot the Debian vmlinuz- 2.6.26- 1-versatile kernel perfectly, but when I try to boot the Ubuntu vmlinuz- 2.6.28- 4-versatile I get no video output. I cannot even get console output with -monitor stdio. I tested both kernels with no initrd.img and no hard drive. Debian kernel returns kernel panic about no rootfs. The Ubuntu kernel still returns the same results. I am using Ubuntu 8.10 i386 (2.6.27-9-generic) and Qemu version 0.9.1-5ubuntu3.