A further data point. One of my desktop systems that doesn't have a problem is an X300 on PCI Express.
01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60 [Radeon X300 (PCIE)] 01:00.1 Display controller: ATI Technologies Inc RV370 [Radeon X300SE]
I don't know why it has two entries.
A further data point. One of my desktop systems that doesn't have a problem is an X300 on PCI Express.
01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60 [Radeon X300 (PCIE)]
01:00.1 Display controller: ATI Technologies Inc RV370 [Radeon X300SE]
I don't know why it has two entries.