On 2015-04-09, Bret Busby <bret.busby@gmail.com> wrote: > Hello. > > On a new installation of Debian 7 on an Acer "laptop" computer with an > AMD Radeon R2 graphics adaptor, the external monitor does not work. > > The external monitor works with MS Win 7, with MS Win 8, with Debian > 6, and with Ununtu 12.04 and with Ubuntu 14.04. Driver? (Ubuntu/Debian--compare).