Same here with 15.04 (as well as previous releases for at least a few years; I tend to update every six months).
Running two screens with an older NVidia nvs280 (or 285), and now three screens at work with a radeon. So not a chipset issue.
Same here with 15.04 (as well as previous releases for at least a few years; I tend to update every six months).
Running two screens with an older NVidia nvs280 (or 285), and now three screens at work with a radeon. So not a chipset issue.