I have the same problem but with a nVidia card:
sudo lshw -c video
*-display
description: VGA compatible controller
product: GT218 [NVS 3100M]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a2
width: 64 bits
clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nouveau latency=0
I have the same problem but with a nVidia card:
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nouveau latency=0
sudo lshw -c video
*-display
description: VGA compatible controller
product: GT218 [NVS 3100M]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a2
width: 64 bits
clock: 33MHz