Swapped board in R61, now screen resolution is garbled

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Utwig
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Swapped board in R61, now screen resolution is garbled

#1 Post by Utwig » Wed May 15, 2013 5:34 pm

I swapped dead nVidia motherboard in R61 for an Intel one.

The system now powers on but the screen is garbled.

Machine type of the Thinkpad is 8918-CJG, the motherboard was pulled from system 8935-A47

The Thinkpad has 1680x1050 screen, I presume new motherboard is 1280x720. The LCD cable fit perfectly.

Is there a way to fix this, perhaps with a BIOS flash?
T540p, T420s (soon to be T420ps :) ), X61t, T60p, T42p, A21p

ajkula66
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Re: Swapped board in R61, now screen resolution is garbled

#2 Post by ajkula66 » Wed May 15, 2013 6:06 pm

An intel board will drive a WSXGA+ panel with no issues. I have a R61e shell that is running with a (formerly nVidia) R61 WSXGA+ panel.

Your problem is elsewhere.

The only culprit I see would be the LCD cable, although that contradicts everything I know about post-R52 machines not requiring a different cable for the "new" resolution.

Good luck.
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

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George (your grouchy retired FlexView farmer)

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Utwig
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Re: Swapped board in R61, now screen resolution is garbled

#3 Post by Utwig » Sat May 18, 2013 8:02 pm

There's definitely something wrong with LCD cable as monitor has a green cast which disappears if I wiggle the cable.

I forgot to tell that with external 1280x1024 panel system works fine.

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