Ok, my HD 7870 XT (ID 679e) is working now with Clover. I would confirm here that NO SLEEP TRICK
Here is my config in order to make it works;
- r1177 (specifically for this card)
- Remove CsmVideo driver
- No custom DSDT
BIOS/UEFI setup for Asrock Z77 Extreme6 :
- Disable IGPU Multi Monitor (Lucid Virtu)
- Set share memory NOT to AUTO
- May or may not disabling CSM (as long as no CsmVideo driver in Clover)
I found Futomaki is the best currently since DVI-D and HDMI ports automatically give the correct resolution to my monitor (max 1920x1080). Not yet tested with miniDP.
With other framebuffers I got;
Aji and Dashimaki - lost signal when using HDMI port.
Hamachi - I have to scale down resolution when using DVI-D port.
Thanks a lot k3nny