I've been wrestling with a mysterious issue since installing my Radeon 6850 and it's been driving me crazy. Finally, (and no thanks to Asus or XFX) I believe I now know what's causing it...
Motherboards with UEFI seem to have an issue correctly displaying the BIOS/UEFI setup and logo/POST screens when running Radeon 6xxx video cards to a 720p or 1080p display. The OS works fine but boot screens can display garbled video, missing text, or just black.
What I'm wondering is if:
1. Others will experience the same symptoms with a similar setup
2. If the connection type matters (DVI vs HDMI etc)
3. If the brand and chipset (6850 vs 6870, 69xx, 6xxx, 5xxx) matters
4. If the motherboard BIOS version matters
If you have a 720/1080p display and can try booting with you computer connected via HDMI or DVI it would be very helpful to know your experience.
Thank you!
Motherboards with UEFI seem to have an issue correctly displaying the BIOS/UEFI setup and logo/POST screens when running Radeon 6xxx video cards to a 720p or 1080p display. The OS works fine but boot screens can display garbled video, missing text, or just black.
What I'm wondering is if:
1. Others will experience the same symptoms with a similar setup
2. If the connection type matters (DVI vs HDMI etc)
3. If the brand and chipset (6850 vs 6870, 69xx, 6xxx, 5xxx) matters
4. If the motherboard BIOS version matters
If you have a 720/1080p display and can try booting with you computer connected via HDMI or DVI it would be very helpful to know your experience.
Thank you!