I hope to be able to find an answer here as I've been unsuccessfully searching (and hacking the registry) for the past couple of weeks.
I've got a new Dell notebook (E6400) with GMA 4500MHD. I also have a 24" LG monitor that has VGA, HDMI and component connections. I was successfully using this monitor with my old HP laptop + docking station connected with DVI-HDMI cable, and getting full digital 1920x1200. The HP notebook had an ATI graphics card. However, with this new Dell notebook, I cannot get the DVI-to-HDMI connection (via the docking station) to work properly.
I do get it working using the VGA connection; however, the image quality is noticeably worse than the digital one. What happens when I connect using DVI-HDMI cable is that the Intel driver thinks that I connected a digital television rather than a monitor -- that's what I see when I bring up Intel Graphics Media Accelerator Driver for mobile, and look at Display Devices tab. I cannot switch to Monitor there. The image is not being fully displayed like I described in a thread here:
I've tried searching the web for any possible links on how to fix that. It seems that some other people are having problems with Intel graphics and this monitor as seen here
When modifying my monitor settings, I can choose either Full or Original display when connected in HDMI mode. For the former the monitor reports getting 480p signal and for the latter - the 1080p signal. Those are suited for televisions but I'm using a digital monitor rather than a television; therefore, I do think that the problem is with the driver since it should be sending 1200p signal.
I'm running the latest version of the driver which is 18.104.22.1688 for my OS (Vista Business x64). So is the driver too smart for its own good? A 3.5 year old HP laptop with an old ATI card can handle this and the latest Intel one cannot? I still have some hope that I can get this working, any suggestions/insights are greatly appreciated.