It seems there are a couple of similar bugs which were tracked in the fedora bug tracking system last year.
Of particular interest is https://bugzilla.redhat.com/show_bug.cgi?id=802069<709...@bugs.debian.org> Scrolling to the bottom, one of the reporters states: "This video controller is integrated onto an Nvidia MCP61 motherboard, and lspci identifies it as "GeForce 6150SE nForce 430"". This is the same as my lspci output, so the bug may be the same one. -- Amat Victoria Carum