Raven: freeze at 'modprobe amdgpu' in early console with android-x86

Raven: freeze at 'modprobe amdgpu' in early console with android-x86

[Mauro Rossi]

Hello,
I am having problem to load amdgpu module with Athlon 200GE, on a
motherboard MSI B450M-A Pro Max with latest BIOS and a DVI-D monitor.

The same HW setup  boots Ubuntu 19.10 Gnome Desktop Environment with
APU HW acceleration without any issue.

When issueing the command 'modprobe amdgpu' in early console the
screen just freezes, but I don't see any [drm] amdgpu output on the
screen and the modesetting has clearly failed.

I have tried with kernel 5.3, the same as the one used in Ubuntu
19.10, and replicated the %AMD% kernel config options extracted from
Ubuntu.
I have the same issue also with kernel 5.5rc7 and up to date linux-firmware.

In case you have experienced or know about similar issues,
could you please provide some info/suggestion for me to try to
overcome the problem?

Are there some implicit additional kernel config options required besides
CONFIG_DRM_AMDGPU=m, CONFIG_AMD_DC=y, CONFIG_AMD_DC_DCN1_0=y,

or some undocumented module dependencies, which are mandatory for the
Raven APUs correct detection?

Thanks for any info

Mauro Rossi
android-x86 team volunteer
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Re: Raven: freeze at 'modprobe amdgpu' in early console with android-x86

[Felix Kuehling]

I've seen hangs on a Raven AM4 system after the Ubuntu upgrade to kernel 
5.3. I am able to work around it by disabling stutter mode with the 
module parameter amdgpu.ppfeaturemask=0xfffdbfff. If that doesn't help, 
you could also try disabling GFXOFF with amdgpu.ppfeaturemask=0xfffd3fff.

Regards,
   Felix

On 2020-01-26 11:13, Mauro Rossi wrote:
> Hello,
> I am having problem to load amdgpu module with Athlon 200GE, on a
> motherboard MSI B450M-A Pro Max with latest BIOS and a DVI-D monitor.
>
> The same HW setup  boots Ubuntu 19.10 Gnome Desktop Environment with
> APU HW acceleration without any issue.
>
> When issueing the command 'modprobe amdgpu' in early console the
> screen just freezes, but I don't see any [drm] amdgpu output on the
> screen and the modesetting has clearly failed.
>
> I have tried with kernel 5.3, the same as the one used in Ubuntu
> 19.10, and replicated the %AMD% kernel config options extracted from
> Ubuntu.
> I have the same issue also with kernel 5.5rc7 and up to date linux-firmware.
>
> In case you have experienced or know about similar issues,
> could you please provide some info/suggestion for me to try to
> overcome the problem?
>
> Are there some implicit additional kernel config options required besides
> CONFIG_DRM_AMDGPU=m, CONFIG_AMD_DC=y, CONFIG_AMD_DC_DCN1_0=y,
>
> or some undocumented module dependencies, which are mandatory for the
> Raven APUs correct detection?
>
> Thanks for any info
>
> Mauro Rossi
> android-x86 team volunteer
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=02%7C01%7Cfelix.kuehling%40amd.com%7Cf3b361eac69f4878af4208d7a27aab62%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637156520408128896&sdata=Rc20y%2BFoh06v%2FzY6TdM896B2KZiL%2BCq%2FMAJqkY30M6Q%3D&reserved=0
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Re: Raven: freeze at 'modprobe amdgpu' in early console with android-x86

[Mauro Rossi]

Hi Felix,

On Mon, Jan 27, 2020 at 10:34 AM Felix Kuehling <felix.kuehling@amd.com> wrote:
>
> I've seen hangs on a Raven AM4 system after the Ubuntu upgrade to kernel
> 5.3. I am able to work around it by disabling stutter mode with the
> module parameter amdgpu.ppfeaturemask=0xfffdbfff. If that doesn't help,
> you could also try disabling GFXOFF with amdgpu.ppfeaturemask=0xfffd3fff.
>
> Regards,
>    Felix

I have tried with the grub kernel cmdline mentioned, but the freeze is
still happening at 'modprobe amdgpu'

Is there an explicit list of kernel module dependencies that I could
check in our kernel defconfig?

I have also added Qiang, in case he may have ever seen the issue in
his former Android experience
KR

Mauro
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Re: Raven: freeze at 'modprobe amdgpu' in early console with android-x86

[Mauro Rossi]

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Hi, good news,

'modprobe amdgpu' is finally working with Athlon 200GE, on a motherboard
MSI B450M-A Pro Max,
with latest raven linux-firmware bundle for 19.50

Mauro

On Tue, Feb 11, 2020 at 7:20 PM Mauro Rossi <issor.oruam@gmail.com> wrote:

> Hi Felix,
>
> On Mon, Jan 27, 2020 at 10:34 AM Felix Kuehling <felix.kuehling@amd.com>
> wrote:
> >
> > I've seen hangs on a Raven AM4 system after the Ubuntu upgrade to kernel
> > 5.3. I am able to work around it by disabling stutter mode with the
> > module parameter amdgpu.ppfeaturemask=0xfffdbfff. If that doesn't help,
> > you could also try disabling GFXOFF with amdgpu.ppfeaturemask=0xfffd3fff.
> >
> > Regards,
> >    Felix
>
> I have tried with the grub kernel cmdline mentioned, but the freeze is
> still happening at 'modprobe amdgpu'
>
> Is there an explicit list of kernel module dependencies that I could
> check in our kernel defconfig?
>
> I have also added Qiang, in case he may have ever seen the issue in
> his former Android experience
> KR
>
> Mauro
>

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