Screen Shaking On External Monitor

[drummer10630]

I've got this weird screen shaking using my external monitor, but not on my laptop's screen. When I position my mouse on the right side of my external monitor, I get this weird shaking effect on the screen. My specs are:

 

 

Intel GMA X3100:

 

Chipset Model: GMA X3100

Type: GPU

Bus: Built-In

VRAM (Total): 144 MB

Vendor: Intel (0x8086)

Device ID: 0x2a42

Revision ID: 0x0007

Displays:

Display:

Resolution: 1366 x 768

Pixel Depth: 32-Bit Color (ARGB8888)

Mirror: On

Mirror Status: Mirroring

Online: Yes

Built-In: Yes

SMS19A100:

Resolution: 1366 x 768 @ 60 Hz

Pixel Depth: 32-Bit Color (ARGB8888)

Display Serial Number: HMAC501998

Main Display: Yes

Mirror: On

Mirror Status: Master Mirror

Online: Yes

 

 

I am using Mountain Lion 10.8.2 and the laptop is a Gigabyte q1105m using VGA output to a Samsung SyncMaster sa100 monitor. I am using an Intel GMA 4500 FB2A42 kext, as it's the actual graphics card inside the laptop, even though System Report lists it incorrectly. Is there something I can modify to stop the shaking? Here is a link to how the screen shakes when the mouse in in a specific position:

 

 

http://www.youtube.com/watch?v=WpLpgKbpGUU

[drummer10630]

Anyone?

[WhatTheTech]

First things first (only for the sake of ruling things out):

 

1) Try a different cable. It rarely happens to be the issue, but it DOES happen.

2) Try a different monitor. Same as above.

3) Just to be absolutely clear, this ONLY happens when the mouse is on the right hand side?

[drummer10630]

Yes, only when the mouse is positioned on the right side, in a certain area of the screen. I have triple boot, Win7, Lion, Mountain Lion, but it only does it in OSX. I have tried different resolutions, and refresh rates, but same thing. I will have to borrow someone's monitor and cable to test what you have suggested, as I don't own any extras.