Comment 20 for bug 1043518

Please run ' apport-collect -p plymouth 1043518' from the affected system after booting the live cd without splash (do *not* boot with nomodeset).
I would also like to see plymouth debug output from this machine, but I realize that may be difficult to capture if the video is corrupted after boot. By any chance, does switching to vt1 give you uncorrupted video after boot, allowing you to copy files off?

Fwiw, the display here looks like a framebuffer that plymouth (and X) is expecting to be set up as a linear framebuffer isn't. That's likely to be a kernel or bootloader bug rather than a plymouth bug. (bearing in mind that the live cd uses a different bootloader than the installed system) It may be helpful to test writing the image to a usb stick and check whether the behavior is the same.