Same problem on feisty for 86c775/86c785 [Trio 64V2/DX or /GX] with xserver-xorg-video-s3 0.4.1-0ubuntu1.
Same problem on feisty for 86c775/86c785 [Trio 64V2/DX or /GX] with xserver- xorg-video- s3 0.4.1-0ubuntu1.