Raspberry Pi Lab

Tag: composite video

Flaw In My Logic

by on Dec.26, 2013, under Installation, Troubleshooting

Although I am fairly confident in my conclusion that the HDMI to VGA converter I was using is, in fact, defective.  However, it occurred to me that my logic has a flaw.  I could be the HDMI converter, but it could also be the HDMI port on the RPi itself.

When I got the RPi up the first time, it was via the composite video port — not the HDMI.  Therefore, not all variables have been eliminated.

I will devise a test to verify both the HDMI port on the RPi and the HDMI converter and post the results.

 

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Troubleshooting My First Install

by on Dec.26, 2013, under Installation, Troubleshooting

debugging-computer-transparent-tightWell, the instructions I detailed in my previous post were correct and worked as intended.  The procedure I followed was NOT the problem.

To trouble shoot, I first verified the image was flashed to the SD card correctly by re-flashing the same card.  But when that didn’t produce a different result, I decided to test the micro-SD card adpater by trying the flashed mico-SD with all four of my adapters.  But no luck there either.

Next I decided to try a different micro-SD card.  I have a couple of 8Gb micro-SDs to I grabbed one of them and flashed it with the same procedure I detailed in my previous post.  When I tested that SD on the RPi, I could see a different result on the board.  In addition to the solid red LED that was there in the previous tests, I could now see a flashing green LED.  I’ve been around computers long enough to recognize the flashing of the green LED as boot up activity.

However, there was still no result on the monitor.  The next step was to test the monitor.  The monitor and VGA cable tested ok by connecting to my iPad.  So I took the RPi over to the TV and pulled the composite video from the VHS.  With the composite video connected to the RPi it booted into Occidentalis.

Conclusion…  My initial install had a bad 4Gb micro-SD card AND a bad HDMI to VGA converter.   How’s that for bad luck?  Hmmm?

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