<div dir="ltr">Hi,<br><div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Nov 7, 2017 at 5:45 PM, Russell King - ARM Linux <span dir="ltr"><<a href="mailto:linux@armlinux.org.uk" target="_blank">linux@armlinux.org.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
<span class="gmail-"><br>
On Tue, Nov 07, 2017 at 05:20:04PM +0000, Luís Mendes wrote:<br>
> I got no EDID at all from the monitor.<br>
> get-edid returns:<br>
> No EDID on bus 0<br>
> No EDID on bus 1<br>
> No EDID on bus 2<br>
><br>
> hexdump -C /sys/class/drm/card1-HDMI-A-1/<wbr>edid<br>
> is empty<br>
<br>
</span>Can you confirm that it also gives no EDID when plugged into another<br>
machine? I don't see evidence via google that other people have a<br>
problem with the monitor - and in this day and age, a monitor missing<br>
all EDID is just completely perverse, especially if it has a HDMI<br>
socket. (EDID is basically a requirement for HDMI, it isn't optional.)<br>
<br></blockquote><div>You are right... the monitor does have EDID. I've just connected it to my laptop. Binary in attachment, parsed edid below.<br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
I wonder if your board is missing something - maybe the 5V supply to<br>
the HDMI socket is missing (which is a requirement in the HDMI spec<br>
for the DDC bus to be usable.)<br></blockquote><div> </div><div>Yes, it looks like there is something with the board. Although my home TVs now work since I changed to i2c2. <br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div class="gmail-HOEnZb"><div class="gmail-h5"><br>
--<br>
RMK's Patch system: <a href="http://www.armlinux.org.uk/developer/patches/" rel="noreferrer" target="_blank">http://www.armlinux.org.uk/<wbr>developer/patches/</a><br>
FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up<br>
According to <a href="http://speedtest.net" rel="noreferrer" target="_blank">speedtest.net</a>: 8.21Mbps down 510kbps up<br>
</div></div></blockquote><div><br></div><div>parse-edid < samsung_edid.bin <br>Checksum Correct<br><br>Section "Monitor"<br> Identifier "SyncMaster"<br> ModelName "SyncMaster"<br> VendorName "SAM"<br> # Monitor Manufactured week 41 of 2010<br> # EDID version 1.3<br> # Digital Display<br> DisplaySize 160 90<br> Gamma 2.20<br> Option "DPMS" "true"<br> Horizsync 27-81<br> VertRefresh 50-60<br> # Maximum pixel clock is 170MHz<br> #Not giving standard mode: 1600x1200, 60Hz<br> #Not giving standard mode: 1280x1024, 60Hz<br> #Not giving standard mode: 1280x960, 60Hz<br> #Not giving standard mode: 1280x800, 60Hz<br> #Not giving standard mode: 1440x900, 60Hz<br> #Not giving standard mode: 1680x1050, 60Hz<br><br> #Extension block found. Parsing...<br> Modeline "Mode 10" 74.25 1920 2448 2492 2640 540 542 547 562 +hsync +vsync interlace<br> Modeline "Mode 0" 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync <br> Modeline "Mode 1" 74.25 1280 1390 1430 1650 720 725 730 750 +hsync +vsync <br> Modeline "Mode 2" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync<br> Modeline "Mode 3" 74.250 1280 1390 1420 1650 720 725 730 750 +hsync +vsync<br> Modeline "Mode 4" 148.500 1920 2448 2492 2640 1080 1084 1089 1125 +hsync +vsync<br> Modeline "Mode 5" 74.250 1920 2008 2052 2200 1080 1082 1087 1125 +hsync +vsync interlace<br> Modeline "Mode 6" 74.250 1920 2448 2492 2640 1080 1082 1089 1125 +hsync +vsync interlace<br> Modeline "Mode 7" 74.250 1280 1720 1760 1980 720 725 730 750 +hsync +vsync<br> Modeline "Mode 8" 27.027 720 736 798 858 480 489 495 525 -hsync -vsync<br> Modeline "Mode 9" 27.000 720 732 796 864 576 581 586 625 -hsync -vsync<br> Modeline "Mode 11" 74.25 1920 2008 2052 2200 540 542 547 562 +hsync +vsync interlace<br> Modeline "Mode 12" 74.25 1280 1720 1760 1980 720 725 730 750 +hsync +vsync <br> Modeline "Mode 13" 74.25 1280 1390 1430 1650 720 725 730 750 +hsync +vsync <br> Option "PreferredMode" "Mode 10"<br>EndSection<br></div><div><br></div><div>Luís <br></div></div></div></div></div>