Finally have an issue that I can't seem to figure out myself. After a long time of reading MR, this seems like a fitting place to try to get some help. I've searched many placed and have yet to find a solution. I also posted this on the Apple support forum a few days ago, but no response. I have a 21" Gateway display from my old PC that was collecting dust after I got a '11 Macbook Pro 13", so I've decided to use it as an external display. My issue is that the display's native resolution is 1680 x 1050, but I am not able to use ANY other res setting other than 800 x 600, wich makes everything huge. Also, 1680 x 1050 is not listed under the res options when I have the display settings up and any other resolution i choose results in the external going dark. It will only come back on when it is returned to 800 x 600. I am doing this through VGA and for extended desktop, not mirroring or anything else. Maybe the adapter is faulty? I'm pretty certain it is not the VGA cable itself because I was able to get HD with my PC. Let me know if any other info is needed. Thanks!