+ matroxfb_DAC_out(PMINFO M1064_XPIXCLKCTRL, tmp);
+#ifdef __powerpc__
+ /* This is necessary to avoid jitter on PowerPC
+ * (OpenFirmware) systems, but apparently
+ * introduces jitter, at least on a x86-64
+ * using DVI.
+ * A simple workaround is disable for non-PPC.
+ */
+ matroxfb_DAC_out(PMINFO M1064_XDVICLKCTRL, 0);
+#endif /* __powerpc__ */
+ matroxfb_DAC_out(PMINFO M1064_XPWRCTRL, xpwrctrl);
+