Re: Possibility of RX570 responsible for spontaneous reboots (MCE) with Ryzen 3700x?

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Hi John,

> >I know RX570 (polaris) should stay at PCI3 as far as I know.
>
> Yep... thought I remembered you mentioning having a 5700XT though... is that in a different system ?

I am using a RX570, the guy from reddit changed from R600 to an 5700XT
and it seems it did solve his reboot problems.

As the system is rock solid with windows-10 and others seem to
experience similar behaviour I've decided to file a bug at the
kernel's bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=206903

Thanks for your suggestions & best regards, Clemens


>
> ________________________________
> From: Clemens Eisserer <linuxhippy@xxxxxxxxx>
> Sent: March 9, 2020 2:30 AM
> To: Bridgman, John <John.Bridgman@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
> Subject: Re: Possibility of RX570 responsible for spontaneous reboots (MCE) with Ryzen 3700x?
>
> Hi John,
>
> Thanks a lot for taking the time to look at this, even if it doesn't
> seem to be GPU related at first.
>
> > OK, that's a bit strange... I found mce log and MCE-Ryzen-Decoder as options for decoding.
> Sorry for omitting that information - indeed I was using
> MCE-Ryzen-Decoder, thanks for pointing to mcelog.
> The mce log output definitivly makes more sense, I'll try to
> experiment a bit with RAM.
>
> Thanks also for the link to the forum, seems of all the affected users,
> no one reported success in that thread.
>
> > For something as simple as the GPU bus interface not responding to an access
> > by the CPU I think you would get a different error (bus error) but not 100% sure about that.
> >
> > My first thought would be to see if your mobo BIOS has an option to force PCIE
> > gen3 instead of 4 and see if that makes a difference. There are some amdgpu module parms
> > related to PCIE as well but I'm not sure which ones to recommend.
>
> I'll give it a try and have a look at the pcie options - but as far as
> I know RX570 (polaris) should stay at PCI3 as far as I know.
> Disabling IOMMU didn't help as far as I recall.
>
> Thanks & best regards, Clemens
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