Comment 12 for bug 377402

Hello again
Try to set UseLegacyModeSwitch=TRUE (line 709) for your chipset (K8M890) in file via_driver.c

For example:

        case VIA_K8M890:
            pVia->VideoEngine = VIDEO_ENGINE_CME;
            pVia->agpEnable = FALSE;
            pVia->dmaXV = FALSE;
            pVia->UseLegacyModeSwitch = TRUE;
            break;

Please build/install the latest openchrome driver and enable debug mode.