Mac OS 9 Lives! (Classic Mac OS Forum)

Classic Mac Hardware (Troubleshooting, Upgrading, & Modifying) => Mac CPU Upgrades => Topic started by: Conor on August 22, 2019, 11:30:38 AM

Title: GigaDesigns G4 Upgrade. Audio issues OS 9.
Post by: Conor on August 22, 2019, 11:30:38 AM
I picked up a DA 466 G4 recently for pretty cheap and thought to migrate my upgrades over from a GE 400 G4 for the faster bus speed. Everything worked with the CPU upgrade in the GE. Installation went smooth, but there was one hitch. No Audio while running mac OS 9.2. The firmware was upgraded before installation from 4.1.1 to 4.2.8. I tried uninstalling/reinstalling the gigadesigns firmware with original CPU and the sound works fine with the new firmware. It just doesn't work with the new CPU installed. Any thoughts would be appreciated. Thanks!
Title: Re: GigaDesigns G4 Upgrade. Audio issues OS 9.
Post by: Ninester on August 22, 2019, 01:34:36 PM
I had to use a cheap USB DAC on Mac Mini 9.2 for clean sound.  Not sure yours is related to your CPU upgrade...
Title: Re: GigaDesigns G4 Upgrade. Audio issues OS 9.
Post by: Conor on August 22, 2019, 04:24:42 PM
thanks for the suggestion. like i said, with stock cpu - sound. gigadesigns cpu - no sound (only os 9). the sound also worked with a gigabit ethernet g4 with the upgrade, running os 9. i should also mention, i tried multiple clock speeds from 1.53-1.8ghz. i also removed the upgrade and reinstalled the os 9 from legit CD, reinstalled the new cpu and still nothing. Booting from a OS 9 CD - no sound. deleted sound prefs, and tried without extensions - silence...
Title: Re: GigaDesigns G4 Upgrade. Audio issues OS 9.
Post by: Ninester on August 23, 2019, 07:11:13 PM
I guess you searched but hope someone actually helpful can help you out. ;)

another shot in the dark...  http://forums.macresource.com/read.php?1,222016