External display lost after resume from sleep on Macbook 4,1

Hi, I'm connecting an external display (with a max res of 1920x1080) on a Macbook 4,1 early 2008 (graphics : Intel GMA X3100) with OS X 10.5.8.
It's connected with an official Apple MiniDVI>DVI converter and a DVI cable.
I had to reset the PRAM and SMC to have it detected.
It worked perfectly in mirror mode... until I put the macbook to sleep : on resume, the external display received no signal, and I could'nt detect it in "monitors / detect monitors".
I checked that SMC is up to date (1.31f1)
When I plug or unplug the DVI cable, or when I switch on/off the external monitor, the macbook's integrated display switches off for a second then switches on back, as if it were detecting something... but without any effect.
Any idea ?

Hi Erwansj,
It sounds like you have done most of the steps in this article, but see if there are some other steps that help, like trying Safe Mode.
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Take care,
Nubz

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Try this hotfix:
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Joan Amat wrote:
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I recently updated my Mac OS to Mt Lion (from Snow Leopard). The SyncMaster is attached as a 2nd monitor and was working just fine for years under Snow Leopard.
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640x480 59.9
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1920x1080 50.0*+ 60.0 24.0 30.0 25.0
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1680x945 60.0
1400x1050 59.9
1600x900 60.0
1280x1024 60.0
1440x900 59.9
1280x960 60.0
1366x768 60.0
1360x768 60.0
1280x800 59.9
1280x768 60.0
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1024x768 60.0
1440x480 30.0
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800x600 60.3 56.2
720x576 50.0
848x480 60.0
720x480 59.9
640x480 59.9 59.9
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3.5.6-1-ARCH
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Last edited by Greed1sGood (2012-10-14 13:43:34)

No. Powering off and on again didn't work. My drive is a Seagate 750GB internal SATA drive in a Vantec NexStar-3 external enclosure. I don't think it is a driver issue. After the device removal error it won't mount on my PC or my Mac via FireWire or USB.
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Lenovo G770 Fan not spinning up after resume from sleep or hibernate

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Hey Abdul,
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External display lost after resume from sleep on Macbook 4,1

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