Attachment 155549 Details for Bug 236416 – Patch to debug EDID BIOS fetch

[patch] Patch to debug EDID BIOS fetch

xorg-x11-server-1.1.1-debug.patch (text/plain), 2.03 KB, created by Charles R. Anderson on 2007-05-28 18:30:55 UTC

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Creator: Charles R. Anderson

Created: 2007-05-28 18:30:55 UTC

Size: 2.03 KB

patch

obsolete

>--- xorg-server-1.1.1/hw/xfree86/ddc/interpret_edid.c.debug	2007-05-28 12:58:43.000000000 -0400
>+++ xorg-server-1.1.1/hw/xfree86/ddc/interpret_edid.c	2007-05-28 13:28:23.000000000 -0400
>@@ -309,8 +309,11 @@
> static Bool
> validate_version(int scrnIndex, struct edid_version *r)
> {
>-    if (r->version != 1)
>+    if (r->version != 1) {
>+	xf86DrvMsg(scrnIndex, X_ERROR,"EDID Major Version %i not valid\n",
>+		   r->version);
> 	return FALSE;
>+    }
>     if (r->revision > 3) {
> 	xf86DrvMsg(scrnIndex, X_ERROR,"EDID Version 1.%i not yet supported\n",
> 		   r->revision);
>--- xorg-server-1.1.1/hw/xfree86/vbe/vbe.c.debug	2006-07-05 14:31:42.000000000 -0400
>+++ xorg-server-1.1.1/hw/xfree86/vbe/vbe.c	2007-05-28 13:42:02.000000000 -0400
>@@ -263,6 +263,9 @@
>     Bool noddc = FALSE;
>     int screen = pVbe->pInt10->scrnIndex;
>     OptionInfoPtr options;
>+#define EDID_WIDTH      16
>+    CARD16 i, j;
>+    char buf[EDID_WIDTH * 2 + 1];
> 
>     if (!page) return NULL;
> 
>@@ -276,7 +279,7 @@
>     
>     if (!vbeProbeDDC(pVbe)) goto error;
> 
>-    memset(page,0,sizeof(vbeInfoPtr));
>+    memset(page,0,128); /* EDID fetch is 128 bytes */
>     strcpy(page,vbeVersionString);
> 
>     pVbe->pInt10->ax = 0x4F15;
>@@ -287,6 +290,7 @@
>     pVbe->pInt10->di = SEG_OFF(RealOff);
>     pVbe->pInt10->num = 0x10;
> 
>+    sleep(2);  /* Pausing here seems to help obtain any data at all. */
>     xf86ExecX86int10(pVbe->pInt10);
> 
>     if ((pVbe->pInt10->ax & 0xff) != 0x4f) {
>@@ -297,7 +301,18 @@
>     case 0x0:
> 	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC read successfully\n");
>   	tmp = (unsigned char *)xnfalloc(128); 
>+	if (!tmp) {
>+		xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC bad xnfalloc\n");
>+	}
>   	memcpy(tmp,page,128); 
>+
>+	xf86DrvMsg(screen, X_INFO, "vbeReadEDID DEBUG: EDID AFTER BIOS CALL (in hex):\n");
>+	for (i = 0; i < 128; i += j) {
>+	    for (j = 0; j < EDID_WIDTH; ++j) {
>+	        sprintf(&buf[j * 2], "%02x", tmp[i + j]);
>+	    }
>+	    xf86DrvMsg(screen, X_INFO, "\t%s\n", buf);
>+        }
> 	break;
>     case 0x100:
> 	xf86DrvMsgVerb(screen,X_INFO,3,"VESA VBE DDC read failed\n");

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Attachments on bug 236416: 152574 | 152575 | 154575 | 155549 | 155550 | 155551 | 155552 | 155553 | 155646 | 156806 | 156807 | 158912 | 159000 | 160558 | 160559 | 160561