I've been running 12.04 for several weeks now under VirtualBox, and everything was working fine. But I just installed an Ubuntu update, which included a kernel update, and now I cannot change screen resolution above 1600 x 1200. I was formerly running at 1900 x 1200, but that seems to be no longer an option.
Has anyone else experienced this, and is there a way to return to 1900 x 1200?
Thanks in advance.