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: Thu, 29 Nov 2018 23:47:01 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0384903425==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 9336C6E503 for ; Thu, 29 Nov 2018 23:47:01 +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 --===============0384903425== Content-Type: multipart/alternative; boundary="15435352210.aCDC0cc.1593" Content-Transfer-Encoding: 7bit --15435352210.aCDC0cc.1593 Date: Thu, 29 Nov 2018 23:47:01 +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 #29 from Alex Deucher --- (In reply to Robert Strube from comment #28) > Quick update: >=20 > I heard back from the ACPI BIOS kernel developers (see: > https://bugzilla.kernel.org/show_bug.cgi?id=3D201527) and they seem to im= ply > that the PCI resource issues showing up in the dmseg log are *not* a > problem. Linux is simply trying to allocate more resources, and that the > failure is OK and it does get the requisite resources required. It would appear to not be ok as when it gets the resources, the GPU works. Does disabling dpm make the GPU work? E.g., append amdgpu.dpm=3D0 to the k= ernel command line in grub. The driver needs to query the supported pcie speeds = from the pcie bridge it is connected to in order to setup the power management controller. Maybe when the resources are not available, the driver is not = able to get that information or it gets garbage. --=20 You are receiving this mail because: You are the assignee for the bug.= --15435352210.aCDC0cc.1593 Date: Thu, 29 Nov 2018 23:47:01 +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 # 29 on bug 10852= 1 from Alex Deucher 
(In reply to Robert Strube from comment #28)
> Quick update:
>=20
> I heard back from the ACPI BIOS kernel developers (see:
> https=
://bugzilla.kernel.org/show_bug.cgi?id=3D201527) and they seem to imply
> that the PCI resource issues showing up in the dmseg log are *not* a
> problem.  Linux is simply trying to allocate more resources, and that =
the
> failure is OK and it does get the requisite resources required.

It would appear to not be ok as when it gets the resources, the GPU works.

Does disabling dpm make the GPU work?  E.g., append amdgpu.dpm=3D0 to the k=
ernel
command line in grub.  The driver needs to query the supported pcie speeds =
from
the pcie bridge it is connected to in order to setup the power management
controller.  Maybe when the resources are not available, the driver is not =
able
to get that information or it gets garbage.

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