balderdashian

Hi guys,

I need help with HDMI video output on my Zotac itx 9300 mobo PCB01, i'm using my own DSDT and Lion 10.7.2 with ###### chimera bootloader. The system starts normally over RGB and with max resolution of 1280 x 800 pixels.
HDMI output works only until white bootscreen with apple, after that,I get a message on my TV with "No signal".
i tried to hack NVCap two times but get the Kernel panic every time. Are there any another solutions how to solve this problem???


thanks.

I believe ugokind explains the problem in the post just before yours. It needs a different DSDT that apparently can be found somewhere in this thread.

For anyone interested, I got a great working 10.8 setup with pcb rev 01 of this board. No special DSDT hacking or kexts. The only catch is that I don't use the onboard graphics. I have an EVGA GT 240 card. After my successful install I took it out and rebooted to test the on-boad graphics and it didn't boot. Changing to "GraphicsEnabler=No" may do the trick though. If I try it I'll edit this post EDIT: That didn't work either. Note that I only checked the HDMI output. Other video outputs might work, and a DSDT file might solve everything. I'd love to test it more and try to get it working but I'm having overheating issues when the onboard GPU is enabled.

So for this layman's guide you need a supported graphics card, a USB pen drive (8gb), and a working OSX or OSX86 system (I used 10.6.6 - earlier versions may or may not work). Your Zotac board also requires 2GB of RAM or more.
I did not test the onboard audio as I use HDMI audio. Ethernet works perfectly.

1. Set BIOS to standard settings used by people in this thread. Enable AHCI for SATA, enable HPET, disable serial port, set audio to "External Codec" and set the USB Legacy to Low Speed.

* 2. Flash your BIOS with the modded firmware per the OP of this thread.

3. Use Google to find a popular, universal Mac application that's used to turn an 8gb or greater USB flash drive into a 10.8 install disk if you have the App Store version of the OS.

4. Set your BIOS to boot from the USB flash drive first.

5. Boot to it, open up Disk Utility, and prepare the hard drive volume you wish to install to (Mac OS Extended Journaled, GUID).

6. Install Mountain Lion to your new system disk.

7. Reboot, still booting from the USB flash drive, but select your new system disk in the bootloader menu.

8. Download the latest installer package for the Chimera or your favorite 10.8 compatible bootloader. Run it and install it to you system disk - BUT WAIT, this doesn't fully install it...

9. Bootloader installers seem to be unable to create the needed "/Extra" folder so create one manually on your system disk and copy the contents of the "/Extra" folder on the USB drive over to it. The folder is hidden, so use the Terminal or unhide it.

10. Unmount and unplug the USB drive and reboot using just your system disk. Voila.

** 11. If you have my graphics card and want HDMI audio, you'll need to download and install VoodooHDA 2.7.4 and reboot. Then open System Preferences/Sound and select the 2nd of 4 HDMI entries as your sound output device. Then go to /Applications/Utilities and open up Audio Midi Setup. Change your HDMI output format from 192k Hz to 48k.

12. Combo update to 10.8.1 did not cause any problems.

* UPDATE 1: According to ugokind (post #757 in this thread), the modded BIOS uses an older type of DSDT entry that prevents the onboard Nvidia 9300 GPU from working in Lion and Mountain Lion. So you might want to just use the newer DSDT instead of doing the BIOS mod.

** UPDATE 2: This applies to those with my setup (EVGA GT 240 and possibly other graphics cards). Do not install VoodooHDA. It was responsible for all my inexplicable problems. The issue is that once installed and the kext cache is cleared, it works fine. But if I changed any audio settings or installed any additional hardware (like my USB Wifi, or my printer driver) the system would hang on reboot. Once I removed it from S/L/E, all my "PCI Configuration Begin" and KP problems ended.

A workaround to still get HDMI audio is to search for a program on this board called VoodooLoader. Download it, and the VoodooPatcher, and patch it with the latest version of VoodooHDA.kext (2.7.4). This lets you manually load VoodooHDA when you need it without installing it. This usually works but sometimes causes a panic. It seems if you launch it and don't touch anything for 30 seconds, it's less likely to cause the KP.