- Joined
- Apr 8, 2011
- Messages
- 50
- Motherboard
- Gigabyt H67MA USB3 B3
- CPU
- i7-3770
- Graphics
- Zotac Geforce GT640
- Mac
- Mobile Phone
I'm also not able to get my Radeon HD5450 to a resolution other than 1024x768, which is a huge pain, so I think a video card upgrade might be on the cards.
Hi,
You may find your solution in this thread that helped me get a HD6850 working perfectly for dual screen, on el capitan.
Give it a chance!