Increase the minimum pixel clock for Matrox cards based on feedback from
Teemu Ikonen.  See <URL:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=261993 >.

This patch by Branden Robinson.

Not submitted upstream to XFree86.

--- xc/programs/Xserver/hw/xfree86/drivers/mga/mga_driver.c~	2004-12-09 13:01:06.000000000 -0500
+++ xc/programs/Xserver/hw/xfree86/drivers/mga/mga_driver.c	2004-12-09 13:03:50.000000000 -0500
@@ -2012,8 +2012,13 @@
 
     /* XXX Set HW cursor use */
 
-    /* Set the min pixel clock */
-    pMga->MinClock = 12000;	/* XXX Guess, need to check this */
+    /*
+     * Set the min pixel clock; this was originally guessed to be 12000,
+     * but an MGA G550 user reports that modes with clocks less than 17750
+     * lock up the card.  See
+     * <URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=261993 >
+     */
+    pMga->MinClock = 17750;
     xf86DrvMsg(pScrn->scrnIndex, X_DEFAULT, "Min pixel clock is %d MHz\n",
 	       pMga->MinClock / 1000);
     /*