Re: Intel 965 and Custom Resolutions

From: The Fungi <fungi@yuggoth.org>
To: intel-gfx@lists.freedesktop.org
Subject: Re: Intel 965 and Custom Resolutions
Date: Tue, 31 Aug 2010 15:48:37 +0000	[thread overview]
Message-ID: <20100831154836.GL2241@yuggoth.org> (raw)
In-Reply-To: <1283268520.7791.7018.camel@atropine>

On Tue, Aug 31, 2010 at 11:28:40AM -0400, Adam Jackson wrote:
> Sigh, okay. You should be able to get the complete EDID block out
> of /sys/class/drm/card0/*/edid
[...]

Aha! Mystery solved... so here's the diff in edid-decode output
between feeding it the EDID reoprted by get-edid/xrandr --verbose
and the contents of /sys/class/drm/card0/card0-HDMI Type A-1/edid:

@@ -36,9 +36,41 @@
 Has 1 extension blocks
 Checksum: 0xdf

-Unknown extension block
+CEA extension block
+Extension version: 3
+22 bytes of CEA data
+  Video data block
+    VIC 05 (native)
+    VIC 02
+    VIC 03
+    VIC 04
+    VIC 06
+    VIC 07
+  Audio data block
+  Speaker allocation data block
+  Vendor-specific data block, OUI 000c03 (HDMI)
+    Source physical address 1.0.0.0
+Basic audio support
+Supports YCbCr 4:4:4
+Supports YCbCr 4:2:2
+6 native detailed modes
+Detailed mode: Clock 74.250 MHz, 16 mm x 9 mm
+               1280 1390 1430 1650 hborder 0
+                720  725  730  750 vborder 0
+               +hsync +vsync
+Detailed mode: Clock 27.000 MHz, 4 mm x 3 mm
+               1440 1478 1602 1716 hborder 0
+                240  244  247  262 vborder 0
+               -hsync -vsync interlaced
+Detailed mode: Clock 27.000 MHz, 16 mm x 9 mm
+                720  736  798  858 hborder 0
+                480  489  495  525 vborder 0
+               -hsync -vsync
+Detailed mode: Clock 27.000 MHz, 16 mm x 9 mm
+               1440 1478 1602 1716 hborder 0
+                240  244  247  262 vborder 0
+               -hsync -vsync interlaced
+Checksum: 0x97

-EDID block does NOT conform to EDID 1.3!
-       Digital display field contains garbage: 80
 EDID block does not conform at all!
        Bad year of manufacture

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