Sign up ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have a Toshiba Satellite P775D (6GB RAM, Processor: AMD A8-3500 APU, Graphics: AMD Radeon HD 6620G). I tried connecting this laptop to a 1366 x 768 monitor through VGA and a 1920 x 1080 TV screen via HDMI. It does not seem to want to let me run the two monitors at once (though separately, they work just fine)!

I'm getting a vague impression that some computers can and some computers cannot do this (because the graphics card cannot handle it or something). Very annoying! How do I tell if this is the case for my computer? My computer is not top of the line or anything, but SURELY in 2012, a $700 computer can run three screens... If not, what options would you recommend? A USB adapter?

Thanks in advance! (And yes, I have tried Google)


share|improve this question
which os do you need the solution for? – akira Aug 22 '12 at 9:21
google spit out (among others) this: ... reads like your problem. the problem seems to be that the gpu can't run analog signal (vga) and digital (hdmi) at the same time. – akira Aug 22 '12 at 9:35
I use Windows 7. – Robert Hannah Aug 22 '12 at 10:53
Thanks @akira ! How annoying... – Robert Hannah Aug 22 '12 at 10:54
maybe worthwhile reading as well (ramdac)… .. but i have still no definitive answer for your question, maybe someone else will. – akira Aug 22 '12 at 11:33

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.