SUMO is the firmware that my radeon card requests when I don't have the firmware on my computer, it's the one that it uses so wait, u want me to CHANGE the firmware to the 700 one? are u sure?
you should use wiwi and wait next distro releases . Linux is not as fast as wiwi with drivers and with linux they are added in the kernel , may be your vga has needed files in the latest kernel 3.1 ?
about your vga trouble with driver , may be you should add an options file in the etc/modprobe.d with some settings .
i have a hvr2200 that is a tvcard , kernel did the same as for you , asked for the firmware file-name but i also had to add the option file with parameters for the driver
First you need to install the ATI Stream SDK and if not, you can find the installed
Also your GPU doesn't support OpenCL, so you will get only the CPU OpenCL device, without much performance improvement.
you need to have libOpenCL.so in /usr/lib/ as your card doesn't support OpenCL and this library is included in both the ATI Stream SDK (for ATI users) and the NVIDIA GPU Computing SDK .