Sir,
I am also facing the same issue of HDMI port. The *sample_video.avi* does 
not produce any output on LCD monitor. I have used 
*Beagle_Revc4_Validation.img* and followed the same procedure as mentioned 
by Mr. Kishore Kumar Boddu for *bootargs* and *bootcmd* but even though I 
am not getting output on Monitor and also not able to bring the board in 
network through USB to ethernet converter.
I am using Beagle Board Rev C3 board.

On Thursday, July 1, 2010 12:51:56 AM UTC+5:30, Gerald Coley wrote:
>
> I have no idea what has happend. I can't see a serial port failing because 
> the power was removed from the board. . Obviously something has changed. It 
> is not likely a Hardware issue unless you damaged the hardware in some way 
> by connecting the cables on wrong, for example having the ribbon cable on 
> backwards or off one pin.  We have had only a couple of serial port 
> failures on the C4 in all the ones we have shipped and that was due to 
> improper cables being used.  If you say it worked and now it fails, then 
> the board must have been damaged in some manner. 
>  
> You can request an RMA and send it in and we will test your board to see 
> what the issue might be. But, I suggest you double check everything and 
> make sure it is all hooked up correctly and the terminal SW you use still 
> has the same settings as required..
>  
>  
> Gerald
>
>  
> On Wed, Jun 30, 2010 at 1:36 PM, kishore kumar 
> <[email protected]<javascript:>
> > wrote:
>
>> OK. Could you please give me reply to my second question. 
>>
>>
>>
>> Thanks&Regards,
>> Kishore Kumar Boddu
>>
>>
>>   On Wed, Jun 30, 2010 at 11:57 PM, Gerald Coley 
>> <[email protected]<javascript:>
>> > wrote:
>>
>>>   Well, that is not a Software Manual. It is a System Reference Manual 
>>> that covers the Hardware.
>>>  
>>> Gerald
>>>    
>>>
>>>  
>>> On Wed, Jun 30, 2010 at 11:24 AM, kishore kumar 
>>> <[email protected]<javascript:>
>>> > wrote:
>>>
>>>>
>>>> Thank you Gerald for your replies.
>>>>
>>>> Finally I was able to successfully run the video at LCD. For this I
>>>> had to change the environment variables mentioned below:
>>>>
>>>> setenv bootargs console=ttyS2,115200n8 ramdisk_size=32768 root=/dev/
>>>> ram0 rw rootfstype=ext2 initrd=0x81600000,32M
>>>> omapfb.video_mode=1280x720MR-48@60
>>>> setenv bootcmd 'mmcinit;fatload mmc 0 0x80300000 uImage.bin;fatload
>>>> mmc 0 0x81600000 ramdisk.gz;bootm 0x80300000'
>>>>
>>>> The above environment variables are not mentioned in Beagleboard
>>>> software reference manual (http://beagleboard.org/static/
>>>> BBSRM_latest.pdf).
>>>> These are mentioned here: 
>>>> http://code.google.com/p/beagleboard/wiki/BeagleboardRevCValidationv3.
>>>>
>>>> Till yesterday my beagleboard was working fine for LCD, UART and user
>>>> LED's.
>>>>
>>>> Today I was surprised to see the my serial port doesn't show anything
>>>> the remaining peripherals are working fine (User LEDs ON and LCD
>>>> screen shows orange screen few seconds after it shows login prompt).
>>>>
>>>> I use same UART cable, same SD card, same beagleboard. I didn't change
>>>> anything but not sure why it happened. Could it be hardware problem?
>>>>
>>>> Did you see this type of problems previously?
>>>>
>>>> Could you please suggest me what should I do. I am stuck up here.
>>>>
>>>>
>>>>  Thanks&Regards,
>>>>  Kishore kumar
>>>>
>>>>
>>>> On Jun 27, 11:40 pm, Gerald Coley <[email protected]> wrote:
>>>> > This is video, which does use the DVI-D output pins, but the issue is
>>>> > not caused by HW, but the SW you are using. As you are the one that 
>>>> put the
>>>> > SW on the card, I cannot really guess as to what the issue might be. 
>>>> DVI-D
>>>> > is an output stream of data and does not look for anything like 
>>>> syncing as
>>>> > it is driving the signals to the display.
>>>> >
>>>> > Gerald.
>>>> >
>>>> > On Sun, Jun 27, 2010 at 1:00 PM, kishore kumar <[email protected]
>>>> >wrote:
>>>> >
>>>> > >  Richard, Gerald,
>>>> >
>>>> > > I have tested validation files mention here:
>>>> > >
>>>> http://code.google.com/p/beagleboard/wiki/BeagleboardRevCValidationv3(Rev
>>>> > > C4)
>>>> >
>>>> > > Now i2c commands are working fine.
>>>> >
>>>> > > I need u-boot source code (Rev C4) location for the u-boot exec file
>>>> > > mentioned at the link: *
>>>> > >http://beagleboard.googlecode.com/files/u-boot-revc4.bin.<
>>>> http://beagleboard.googlecode.com/files/u-boot-revc4.bin>
>>>>  > > *
>>>> > > DVI test case is failed. see below output. It doesn't send the 
>>>> video to DVI
>>>> > > port.  Can you tell me Why  did this happened?
>>>> >
>>>> > > root@beagleboard:~# mplayer /sample_video.avi
>>>> > > MPlayer 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team
>>>> > > CPU: ARM
>>>> >
>>>> > > Playing /sample_video.avi.
>>>> > > AVI file format detected.
>>>> > > [aviheader] Video stream found, -vid 0
>>>> > > [aviheader] Audio stream found, -aid 1
>>>> > > VIDEO:  [FMP4]  320x240  24bpp  14.985 fps  285.0 kbps (34.8 
>>>> kbyte/s)
>>>> > > Clip info:
>>>> > >  Software: Lavf52.7.0
>>>> > > ==============================
>>>> > > ============================================
>>>> > > Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
>>>> > > Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)
>>>> > > 
>>>> ==========================================================================
>>>> > > 
>>>> ==========================================================================
>>>> > > Forced audio codec: mad
>>>> > > Cannot sync MAD frame:  0.036 ct:  0.014 285/285 10%  1%  4.6% 0 0
>>>> > > Cannot sync MAD frame:  0.036 ct:  0.017 286/286 10%  1%  4.6% 0 0
>>>> > > Cannot sync MAD frame:  0.035 ct:  0.021 287/287 10%  1%  4.6% 0 0
>>>> > > Cannot sync MAD frame:  0.036 ct:  0.024 288/288 10%  1%  4.5% 0 0
>>>> > > Cannot sync MAD frame:  0.036 ct:  0.028 289/289 10%  1%  4.5% 0 0
>>>> > > Cannot sync MAD frame:  0.034 ct:  0.031 290/290 10%  1%  4.5% 0 0
>>>> > > Cannot sync MAD frame: -0.033 ct:  0.028 291/291 10%  1%  4.5% 0 0
>>>> > > Cannot sync MAD frame: -0.099 ct:  0.021 292/292 10%  1%  4.5% 0 0
>>>> > > Cannot sync MAD frame: -0.166 ct:  0.014 293/293 10%  1%  4.5% 0 0
>>>> > > Cannot sync MAD frame: -0.233 ct:  0.008 294/294 10%  1%  4.5% 0 0
>>>> > > Cannot sync MAD frame: -0.300 ct:  0.001 295/295 10%  1%  4.4% 0 0
>>>> > > Cannot sync MAD frame: -0.366 ct: -0.006 296/296 10%  1%  4.4% 0 0
>>>> > > Cannot sync MAD frame: -0.433 ct: -0.012 297/297 10%  1%  4.4% 0 0
>>>> > > A:  19.3 V:  19.8 A-V: -0.433 ct: -0.019 297/297 10%  1%  4.4% 0 0
>>>> >
>>>> > > Exiting... (End of file)
>>>> >
>>>> > > Thanks&Regards,
>>>> > > Kishore Kumar Boddu
>>>> > > 91-9963111083
>>>> >
>>>> > >  On Fri, Jun 25, 2010 at 6:53 AM, Richard Andrews <
>>>> [email protected]>wrote:
>>>> >
>>>> > >> On Fri, Jun 25, 2010 at 4:24 AM, Gerald Coley <
>>>> [email protected]>
>>>> > >> wrote:
>>>> > >> > And the files on the validation page are suspect as well. We are 
>>>> working
>>>> > >> to
>>>> > >> > get that figured out.
>>>> >
>>>> > >> The validation files that worked for me (rev C4) are here:
>>>> >
>>>> > >>
>>>> http://code.google.com/p/beagleboard/wiki/BeagleboardRevCValidationv3
>>>> >
>>>> > >> Note v3 on the end of the URL. It appears to be a page version 
>>>> number.
>>>> >
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>

Thanks and Regards
Gaurav Pathak 
 

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