I opened the aforementioned legacy system (for the first time in several years) to examine the video card visually. It is in fact an ATI All-In- Wonder card; the ATI copyright is 1997.
Although the card plugs into a PCI slot, the video chip on the card is labeled "3D RAGE PRO AGP 2X". (ATI made both PCI and AGP versions of this All-In-Wonder card.) -- Dapper install fails using ATI Mach64 Rage Pro https://launchpad.net/bugs/48330 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs