Upstream suggests this kernel patch may help the RS480 for when KMS is active: http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=patch;h=d805f50aa1d9eef63fec356b2be557e2da3cd643
Upstream suggests this kernel patch may help the RS480 for when KMS is active: git.kernel. org/?p= linux/kernel/ git/airlied/ drm-2.6. git;a=patch; h=d805f50aa1d9e ef63fec356b2be5 57e2da3cd643
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