Not working HDMI video (both internal and external graphics)

[lewys]

Hello, I have a fully working El Capitan install

GA-Z97X-UD3H
i5 4690K
16 Gb RAM
Radeon HD5770

The only thing that doesn't work it's HDMI video output.

If I connect HDMI cable to ATI card I'm getting flickering screen with artifacts:

http://www.youtube.com/watch?v=1LXUcgT_d-k

If I connect HDMI cable to HD4600, computer reboots, after boot I see artifacts on TV and after few seconds it's entering reboot loop.



How I can fix it?

 

[Fl0r!an]

Are you using your 5770 with injection? If so, which framebuffer?
Which exact card model do you have (connectors are important: 2x DVI, HDMI, DP?)?

 

[lewys]

I'm not using injection and framebuffer, it's work native. Maybe I do something wrong, I don't know.

The model is: SAPPHIRE Vapor-X Radeon HD 5770 100283VXL 1GB 128-Bit GDDR5 PCI Express 2.0 x16

2x DVI, 1xHDMI, 1xDP

 

[Fl0r!an]

Try injecting Vervet framebuffer, I guess auto-init isn't working perfectly with your card.

 

[lewys]

Can you please provide me an instruction how I can inject the Vervet framebuffer in Clover Configurator? I can't find it :-/

 

[Fl0r!an]

InjectAti = True, FBName = Vervet

See here for more information: http://clover-wiki.zetam.org/configuration/graphics#graphics

 

[lewys]

Thank you! It works now! But if I connect it to internal HDMI port it still reboots.

My configuration:

 

[Fl0r!an]

cool, glad I could help!

I don't have any experience with iGPUs though, maybe someone else can help you...

 

[lewys]

Thank you anyway! I still have a small weird issue, maybe you know how to resolve it. After boot I have a weird graphic artifacts in Safari and sometimes in App Store (probably it's related to to all apps that use WebKit, but I have seen it only in Safari and AppStore)



It completely disappears after a few page reloads and it is not a big issue, but as a perfectionist I want to fix it