[GUIDE] Injection of AMD Vega Power and Fan Control Properties

JoelTheSuperior said:

Issue I'm having with VGtab, curious to know if anyone else is:
So it works. The fan control works. It works to over and under clock my GPU. That said, it seems regardless of any settings I use, including the defaults, my computer will freeze after being left on for a while, particularly if it's not under high load. That is, idling seems to make it die.

I have the Sapphire Vega 56 Pulse.

Anyone else experienced this, and anyone else worked out how on earth to fix it?

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I had a similar problem (read my #214 and #215 posts). I also had crashes when the computer wasn't under load.
I've found out that VGtab default settings for a standard Vega64 were not accurate for MY specific version of Vega64 (a Sapphire Nitro+). First of all I've went to my Windows 10 partition, installed the latest Radeon Drivers, and double checked all settings that you can customize with VGtab (CPU / Ram frequencies and voltages). In my case the default memory voltage setting applied by VGtab was 1350 mV while the standard setting with Radeon drivers in windows was 1100 mV.

After fixing that I have noticed that the system is now much more stable. It's almost a week I don't experience such crashes/freezes anymore.

woozaer said:

I had a similar problem (read my #214 and #215 posts). I also had crashes when the computer wasn't under load.
I've found out that VGtab default settings for a standard Vega64 were not accurate for MY specific version of Vega64 (a Sapphire Nitro+). First of all I've went to my Windows 10 partition, installed the latest Radeon Drivers, and double checked all settings that you can customize with VGtab (CPU / Ram frequencies and voltages). In my case the default memory voltage setting applied by VGtab was 1350 mV while the standard setting with Radeon drivers in windows was 1100 mV.

After fixing that I have noticed that the system is now much more stable. It's almost a week I don't experience such crashes/freezes anymore.

Click to expand...

I have a Sapphire Nitro+ too, can you upload your VegaTab.kext, with the corrected settings?

Dutchie2 said:

I have a Sapphire Nitro+ too, can you upload your VegaTab.kext, with the corrected settings?

Click to expand...

Here you go!

woozaer said:

I had a similar problem (read my #214 and #215 posts). I also had crashes when the computer wasn't under load.
I've found out that VGtab default settings for a standard Vega64 were not accurate for MY specific version of Vega64 (a Sapphire Nitro+). First of all I've went to my Windows 10 partition, installed the latest Radeon Drivers, and double checked all settings that you can customize with VGtab (CPU / Ram frequencies and voltages). In my case the default memory voltage setting applied by VGtab was 1350 mV while the standard setting with Radeon drivers in windows was 1100 mV.

After fixing that I have noticed that the system is now much more stable. It's almost a week I don't experience such crashes/freezes anymore.

Click to expand...

Thanks for this. I gave it a shot and it certainly improved things. It went from crashing regularly to well, I did the fix last night, left my machine on overnight, it was fine. Got into work and just now I connected to VNC (over an SSH tunnel) and it had died. Restarted the Window Server and we're all good though. I'm very tempted to just consider restarting the window server every now and then a solution heh.

JoelTheSuperior said:

Thanks for this. I gave it a shot and it certainly improved things. It went from crashing regularly to well, I did the fix last night, left my machine on overnight, it was fine. Got into work and just now I connected to VNC (over an SSH tunnel) and it had died. Restarted the Window Server and we're all good though. I'm very tempted to just consider restarting the window server every now and then a solution heh.

Click to expand...

I am glad it helped you having a much more stable machine. But this solution alone didn't make my system perfectly stable, I was still experiencing some inexplicable crashes even after this VGtab fix: in some other forum I've found a user who was also having similar problems, someone suggested him to check what was connected to the USB ports, that might cause crashes. In his case it was an external sound card (Sound Blaster Omni 5.1) that was connected to a USB3 port. Plugging it in a USB2 port solved his problem.

For my luck I have exactly his same external sound card plugged in USB3, I moved it to a USB2 and this helped me too.

The combo of these two solutions seem to be working for me very well now.

woozaer said:

I am glad it helped you having a much more stable machine. But this solution alone didn't make my system perfectly stable, I was still experiencing some inexplicable crashes even after this VGtab fix: in some other forum I've found a user who was also having similar problems, someone suggested him to check what was connected to the USB ports, that might cause crashes. In his case it was an external sound card (Sound Blaster Omni 5.1) that was connected to a USB3 port. Plugging it in a USB2 port solved his problem.

For my luck I have exactly his same external sound card plugged in USB3, I moved it to a USB2 and this helped me too.

The combo of these two solutions seem to be working for me very well now.

Click to expand...

Thank you so much for responding to me you excellent person. I'm sure there's far better things you could be doing than giving me advice on how to get my hackintosh to behave so I appreciate it, truly.

I should say, it was absolutely rock solid when I had my Nvidia GeForce GTX 970 but granted that was on High Sierra as well. With that said, I wouldn't rule out USB playing a part - I did notice it got slightly more stable after I stopped using that kext that enables all USB ports blindly and set up the USB properly, for example.

I'll investigate when I get home. Unfortunately I'm one of those mental people who uses a Thunderbolt Audio interface. On one hand the low latency is absolutely brilliant, on the other it does mean that hot plugging and other things aren't working heh.

Update: So uh, turns out it was down to faulty DVI cables. How they're able to make a GPU crash is anyone's guess, but after swapping them it's magically fine...

Hi!

Somewhat off-topic but... does these methods apply to RX580 models? Is there a guide?

Thanks in advance!

ultrazone said:

Hi!

Somewhat off-topic but... does these methods apply to RX580 models? Is there a guide?

Thanks in advance!

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The RX580 does not suffer from these issues. I have an RX570 as well as a Vega 56 and the RX 570 works just fine and it's silent most of the time

demonknight9 said:

The RX580 does not suffer from these issues. I have an RX570 as well as a Vega 56 and the RX 570 works just fine and it's silent most of the time

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Thanks, good to know! The only "problem" I'm having with my dual Sapphire Pulse RX580 is that I can only monitor temps. Fan speeds, voltages and performance aren't displayed through iStats nor HWMonitor.

Is there anything to do to fix this? Thanks again!