Spontaneous reboots when using RX 560

[Alex Deucher]

On Thu, Oct 17, 2019 at 10:11 AM Sylvain Munaut <246tnt at gmail.com> wrote:
>
> HI,
>
> I have RX 560 2G card. It's plugged into a 16x physical / 4x
> electrical slot of a X570 chipset motherboard with a Ryzen 3700X CPU.
> The hardware works fine and is stable under Windows (tested with
> games, benchmarks, stress-tests, ...)

Does booting with pci=noats on the kernel command line in grub fix the issue?

Alex

>
> But when trying for instance steam under linux, or even just the 'app
> launcher' from ubuntu that has some visual effect, the machine will
> instantly reboot.
> Also, after the reboot, the GPU is no longer detected (lspci doesn't
> show it, and under windows, its no where to be seen either). It needs
> to be physically turned off and turned back on for it to work again.
>
> I added a serial console to try to get some output and when doing that
> it doesn't immediately reboot (but the rest is the same, machine is
> unusable and a reboot will have the GPU not present anymore until
> poweroff).
>
> This is the output I get :
>
> [  144.311704] amdgpu 0000:06:00.0: AMD-Vi: Event logged
> [IO_PAGE_FAULT domain=0x0000 address=0xa076010100 flags=0x0010]
> [  144.322734] amdgpu 0000:06:00.0: AMD-Vi: Event logged
> [IO_PAGE_FAULT domain=0x0000 address=0xa076230100 flags=0x0010]
> [  144.333751] amdgpu 0000:06:00.0: AMD-Vi: Event logged
> [IO_PAGE_FAULT domain=0x0000 address=0xa076030100 flags=0x0010]
> [  147.028625] AMD-Vi: Completion-Wait loop timed out
> [  147.206336] AMD-Vi: Completion-Wait loop timed out
> [  147.368260] AMD-Vi: Completion-Wait loop timed out
> [  147.532296] AMD-Vi: Completion-Wait loop timed out
> [  147.703269] AMD-Vi: Completion-Wait loop timed out
> [  147.845840] AMD-Vi: Completion-Wait loop timed out
> [  147.860950] iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT
> device=06:00.0 address=0x81b1c1e60]
> [  148.015778] AMD-Vi: Completion-Wait loop timed out
> [  148.187270] AMD-Vi: Completion-Wait loop timed out
>
> (and then it seem to infinitely loop always printing that).
>
> I tried Ubuntu 19.10 with 5.3.0-18-generic
> Also Ubuntu 19.04 with 5.0.0-31-generic
> Also tried with a DKMS module from 19.30 AMDGPU-PRO patched to build
> and load under 5.3.0, all give the same result.
>
> Cheers,
>
>     Sylvain Munaut
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