Did that change recently? I thought laptop manufacturers provide the graphics drivers (repackage the Catalyst ones).
Not that I am aware of, thats why I said it does matter. From the release notes:
AMD Mobility Product Family Compatibility
AMD Catalyst Mobility is a notebook reference graphics driver with limited support for system vendor specific features. When used with Windows Vista or Windows 7, users may have unwanted experiences.
The Installation Verification Software will prevent driver download on certain notebook products. This is to protect against the installing of drivers that may disable features or functionality provided by the system manufacturer. If unwanted experiences occur using Catalyst Mobility, it is recommended to revert back to the driver provided by your system vendor for your specific platform. Please contact your system vendor for the most recent drivers for your notebook.
AMD Mobility Product Families
ATI Mobility Radeon HD 6900M Series of Products
ATI Mobility Radeon HD 4200 Series of Products
ATI Mobility Radeon HD 6800M Series of Products
ATI Mobility Radeon HD 4100 Series of Products
ATI Mobility Radeon HD 6300M Series of Products
ATI Mobility Radeon HD 3800 Series of Products
ATI Mobility Radeon HD 6300 Series of Products
ATI Mobility Radeon HD 3600 Series of Products
ATI Mobility Radeon HD 6200 Series of Products
ATI Mobility Radeon HD 3400 Series of Products
ATI Mobility Radeon HD 5800 Series of Products
ATI Mobility Radeon HD 3200 Series of Products
ATI Mobility Radeon HD 5700 Series of Products
ATI Mobility Radeon HD 3100 Series of Products
ATI Mobility Radeon HD 5600 Series of Products
ATI Mobility Radeon HD 2700 Series of Products
ATI Mobility Radeon HD 5400 Series of Products
ATI Mobility Radeon HD 2600 Series of Products
ATI Mobility Radeon HD 5100 Series of Products
ATI Mobility Radeon HD 2400 Series of Products
ATI Mobility Radeon HD 4800 Series of Products
ATI PowerXpress™ enabled notebooks
ATI Mobility Radeon HD 4600 Series of Products
using AMD chipsets
ATI Mobility Radeon HD 4500 Series of Products