VGA adapter can't handle 1920x1080@60Hz ?

So this absolutely has to do with the ability (or lack there of) for the video card at high resolutions to sync properly with the monitor using the VGA connection.

Mine started with the wavy picture (kind of like if you hit the deguass button on old tube monitors) everytime I booted up, but would go away after 3-5 minutes. Now after about 5-6 months of use, it is non-stop. Completely unusable.

I purchased the mini displayport to HDMI adapter and connected to the monitors HDMI port (the DVI port was already in use by another computer). Now I can run at 1920X1200 with no issues. Note this is a higher resolution (and my monitors native resolution) than I could run with the VGA adapter. The wavy picture problem has disappeared. So it sure appears to be something with the VGA adapter and sync'ing to the monitor at high resolutions.

I am having the same problems described here, on a ViewSonic VA 2231wm, using a VGA adaptor.

I have the same problem with a Samsung SyncMaster SA3350. The whole screen goes wonky zig zaggy and bounces all over. It's like watching a TV in the back of a car in a rap video with cranked woofers.

Having the same issue on a brand new 2011 i7 15" 1GB Radeon MBP, on VGA in 1600x1200 with a DELL 2007FP. Short vid taken today: http://www.dim.uchile.cl/~tcapelle/IMG_0405.MOV

The extrange thing is that sttoped now!

Hope a soon fix (as the WIFI problems to).

My Adapter firmware is 1.03 to.

Thomas

Solution? Could be. Look up the Kanex iAdapt VGA adapter. I just picked one up yesterday for $22 (I'm seeing them under $16 online) and have been using it in 1600x1200 mode without the slightest glitch during that time. If Apple doesn't care enough to fix a problem they've admitted to... time to look for solutions elsewhere.

(Now if I could just get my money back for the Apple adapter... - yeah, right.)

-jk

Hello,

I had the same problem attaching my 1.8Ghz i7 13" Macbook Air (2011 Model) to a brand new Samsung Sync Master SA450 in a clients office @ 1680*1050 via a VGA Adaptor on the Thunderbolt Connector

After I exchanged the VGA cable to a cable (without magnets for interference suppression) a cable that was a little longer than the original one, the monitor now works perfect ...

So perhaps have your cable under suspect ;-) I tried out 2 cables - and the 3rd one worked then

I'm usually answering questions rather than posting them, but I had the same shimmer problem for over a year, then thought to check the forum (which I should have done a year ago).

Thanks to all of the posts over almost 2 years I went out and got a mini displayport to DVI adapter and it fixed the problem for my 13" MBA, late 2010.

I was almost ready to replace my LG 24" display, so this thread really saved me.

jawkneemac, has the Kanex iAdapt VGA adapter been working flawlessly for you still? I have been putting up with this problem for over 2 years, and I can't take it anymore. Please let me know...