have ubuntu 17.10 and cannot find any amd driver for my hd76700M g-card???
Unfortunately, your HD 7670M card is not supported by AMD anymore. It is considered to be legacy. There will not be anymore driver updates for this Graphics card. The last Driver supported by linux you can find from here: https://support.amd.com/en-us/download/desktop/previous/detail?os=Ubuntu%20x86%2064&rev=15.9
The last AMD Supported Linux driver for Ubuntu is version 15.9.