To reproduce, run the herd 2 desktop installer in Qemu with the -std-vga option (it fails without that option too, but differently). The installer switches to text mode (without clearing video ram). Note: doing CTRL-ALT-F1, CTRL-ALT-F7 fixes the screen corruption.
-- installer hangs in feisty https://launchpad.net/bugs/77292 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs