There is a Proprietary driver for the V4900 in Linux, available at www.amd.com/drivers by filling out the appropriate drop-down options (namely Workstation Graphics->FirePro 3D Series->FirePro V4900->Linux x86_64) . This suite, 12.104.2, will be the latest WHQL release for our supported Linux distributions (RHEL 6.3, SLED/SLES 10SP4/11SP2, OpenSUSE 11.4/12.1 and Ubuntu 11.10/12.04/12.10).
If you are still getting the watermark, let us know, as that should only be present for the Beta releases, not the WHQL suites.
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