File xf86-video-intel-sdvo_detect.diff of Package xorg-x11-driver-video

diff --git a/src/i830_sdvo.c b/src/i830_sdvo.c
index 256d16d..011e1c9 100644
--- a/src/i830_sdvo.c
+++ b/src/i830_sdvo.c
@@ -1756,7 +1756,9 @@ i830_sdvo_init(ScrnInfoPtr pScrn, int output_device)
     xf86OutputPtr	    output;
     I830OutputPrivatePtr    intel_output;
     struct i830_sdvo_priv   *dev_priv;
+    I830Ptr	     pI830 ;
     int			    i;
+    int                     val;
     unsigned char	    ch[0x40];
     I2CBusPtr		    i2cbus = NULL, ddcbus;
     char		    name[60];
@@ -1821,16 +1823,15 @@ i830_sdvo_init(ScrnInfoPtr pScrn, int output_device)
     }
 
     intel_output->pI2CBus = i2cbus;
-
-    /* Read the regs to test if we can talk to the device */
-    for (i = 0; i < 0x40; i++) {
-	if (!i830_sdvo_read_byte_quiet(output, i, &ch[i])) {
-	    xf86DrvMsg(pScrn->scrnIndex, X_INFO,
-		       "No SDVO device found on SDVO%c\n",
-		       output_device == SDVOB ? 'B' : 'C');
-	    xf86OutputDestroy (output);
-	    return FALSE;
-	}
+    
+    pI830 = I830PTR(pScrn);
+    val = INREG(SDVOB);
+    if (0 == (val & 0x04)) {
+        xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+                   "No SDVO device found on SDVO%c\n",
+                   output_device == SDVOB ? 'B' : 'C');
+        xf86OutputDestroy (output);
+        return FALSE;
     }
 
     /* Set up our wrapper I2C bus for DDC.  It acts just like the regular I2C