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Radeon 7000 Refresher

nathall

6502
Hey,

Working on a 6400 and 8500 lately. Pulled my old Radeon 7000 out of storage that I bought back in the day when I upgraded my G3 to a G4 ZIF (so we’re talking 20-25 years ago), for troubleshooting. Never had an issue with it.

I was able to boot the 6400 (visually) to desktop the first time I had it in and verify operations. All was good. Since then, it will not display an image on either the 6400 or 8500. I can hear both computers booting via hard drive sounds and they will respond to keystrokes once booted, but I get “No Signal” on the card now. Internal video is fine on both. If there was a signal and it was out of range my monitor would display “Out of Range.”

I had no Radeon drivers installed at the time it worked. Since then, I’ve installed every combination of Radeon drivers I can find, and no difference. Tried OS 9.2.2 and 10.2.8 on the 8500. It was 9.1 or 9.2.2 on the 6400; don’t recall. Also tried booting with factory CDs of 8.1-9.0. All behave the same. CUDA resets, different slots, no change. Apple System Profiler reports the card as a generic “Video card“ or “Display card” in the PCI section with an ID of 1 or 10,1 (again, don’t recall; on vacation/holiday at the moment) on both machines but no other information.

Am I missing something stupid, or am I correct in assuming this card has simply succumbed to the ravages of time and has a deeper hardware issue?
 
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I don't have a Radeon 7000 handy, nor have I Google'd for a pic (sorry, Sunday morning and the coffee has not kicked in)... but I've seen this behavior - works once, then doesn't - on several old Macs and cards that had those pesky 'can' smt caps. Theory is they work until they warm up and dump their magic 'goo'. If there are any 'can' caps on the card, might be worth replacing them and seeing what happens. YMMV!
 
Does CUDA reset do zap PRAM stuff? Command-Option-P-R

If Internal video is fine, then can you connect a monitor to both the internal video and the Radeon 7000 and see what macOS thinks is happening with the Radeon 7000 connected display?
 
I don't have a Radeon 7000 handy, nor have I Google'd for a pic (sorry, Sunday morning and the coffee has not kicked in)... but I've seen this behavior - works once, then doesn't - on several old Macs and cards that had those pesky 'can' smt caps. Theory is they work until they warm up and dump their magic 'goo'. If there are any 'can' caps on the card, might be worth replacing them and seeing what happens. YMMV!

Yeah, that’s what I’m thinking the issue is. I don’t remember if it does for sure, but I think so.

Does CUDA reset do zap PRAM stuff? Command-Option-P-R

If Internal video is fine, then can you connect a monitor to both the internal video and the Radeon 7000 and see what macOS thinks is happening with the Radeon 7000 connected display?

I haven’t done that, but what difference would having a monitor connected to the Radeon at the same time as the internal video make vs only having the internal hooked to a monitor?

Is it a Mac Edition card? Have you tried reflashing the ROM using the Mac OS utility?

I don’t think it is. I have a vague memory of having to flash the ROM way back when I bought it for the G3/G4 and getting a better deal because it wasn’t, but this was 20+ years ago. Is there an easy way to tell?
 
I haven’t done that, but what difference would having a monitor connected to the Radeon at the same time as the internal video make vs only having the internal hooked to a monitor?
It would be interesting to know if macOS detects a display and to know what resolution it's trying to output.
Instead of connecting two displays, you could try using VNC. There's clients for Mac OS X and Mac OS 9.
You could then use another Mac to control the other Mac and see what it's doing. Then you can see if there's any screen resolution options.
 
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