From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 108521] RX 580 as eGPU amdgpu: gpu post error! Date: Fri, 26 Oct 2018 10:35:17 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0005358728==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id 49D226E452 for ; Fri, 26 Oct 2018 10:35:17 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0005358728== Content-Type: multipart/alternative; boundary="15405501171.c54BdbA6E.4984" Content-Transfer-Encoding: 7bit --15405501171.c54BdbA6E.4984 Date: Fri, 26 Oct 2018 10:35:17 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D108521 --- Comment #26 from Christian K=C3=B6nig --- I don't want to stop your cheering, but that isn't a perfect solution eithe= r. (In reply to Robert Strube from comment #25) > I'm wondering where I can report the Thunderbolt Controller / Bridge bug?= =20 > Perhaps you fine folks can point me in the right direction? That is unfortunately most like a bug in the BIOS. What happens here is when you specify acpi=3Doff that the internal Vega M g= ets disabled and the address space that one used freed up. This address space is then used for the Thunderbolt Controller to handle the Polaris. What you could try is to blacklist amdgpu from automatically loading and th= en issue the following commands as root manually: #Disable the internal Vega M echo 1 > ./bus/pci/devices/0000:01:00.0/remove #Manually load amdgpu to initialize the Polaris modprobe amdgpu #Rescan the PCI bus to find the Vega M again echo 1 > ./bus/pci/devices/0000:00:00.0/rescan It's just a shot into the dark, but that might work as well. Apart from that there isn't much else you could do except to upgrade the BI= OS or use different hardware. --=20 You are receiving this mail because: You are the assignee for the bug.= --15405501171.c54BdbA6E.4984 Date: Fri, 26 Oct 2018 10:35:17 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated

Comme= nt # 26 on bug 10852= 1 from Christian K=C3= =B6nig 
I don't want to stop your cheering, but that isn't a perfect s=
olution either.

(In reply to Robert Strube from co=
mment #25)
> I'm wondering where I can report the Thunderbolt=
 Controller / Bridge bug?=20
> Perhaps you fine folks can point me in the right direction?

That is unfortunately most like a bug in the BIOS.

What happens here is when you specify acpi=3Doff that the internal Vega M g=
ets
disabled and the address space that one used freed up.

This address space is then used for the Thunderbolt Controller to handle the
Polaris.

What you could try is to blacklist amdgpu from automatically loading and th=
en
issue the following commands as root manually:

#Disable the internal Vega M
echo 1 > ./bus/pci/devices/0000:01:00.0/remove
#Manually load amdgpu to initialize the Polaris
modprobe amdgpu
#Rescan the PCI bus to find the Vega M again
echo 1 > ./bus/pci/devices/0000:00:00.0/rescan

It's just a shot into the dark, but that might work as well.

Apart from that there isn't much else you could do except to upgrade the BI=
OS
or use different hardware.

You are receiving this mail because:
  • You are the assignee for the bug.
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