Hi, Richdave, did you ever try to launch iMovie? I have a PowerColor HD4850 too. I followed your procedure and got working screen res. as yours. Except one thing, when I launched iMovie, I got an error that indicated my card lacked QE support. What a pity....
first off, try booting with the -x (safe mode) to see if you can get that far... then you can try some of the ideas/options in this thread.
I am troubleshooting my Powercolor HD4850 at the moment and have had some success.. refer above.
EDIT - All tests done hot swap and reboot.
So to summarise
Upper port - DVI>VGA adapter gives max res of 1600x1200 and QE/CI (It seems the DVI>VGA adaptor kills the WS resolution support for some reason)
Upper port - DVI>DVI gives max res of 1920x1080 and QE/CI
Lower port - DVI>VGA adapter gives max res of 1920x1080 and QE/CI (if you boot on top port and hot swap to lower adapter gives "noise" and also stops my monitor from switching back to the DVI input for some reason )
Lower port - DVI>DVI gives max res of 1920x1080 and QE/CI
I'd call that SUCCESS!
jenpMember Since 19 Sep 2005
Offline Last Active Feb 10 2015 12:11 PM
- Group Just Joined
- Active Posts 2
- Profile Views 707
- Member Title InsanelyMac Protégé
- Age Age Unknown
- Birthday Birthday Unknown