[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211189

Bjorn Helgaas (bjorn@helgaas.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |airlied@linux.ie,
                   |                            |bjorn@helgaas.com,
                   |                            |pjones@redhat.com
          Component|PCI                         |Video(DRI - non Intel)
           Assignee|drivers_pci@kernel-bugs.osd |drivers_video-dri@kernel-bu
                   |l.org                       |gs.osdl.org

--- Comment #1 from Bjorn Helgaas (bjorn@helgaas.com) ---
Reassigning to video/DRI since I don't think this is a PCI problem.  If the
integrated GPU (00:02.0) is set to the default in firmware setup, this:

  pci 0000:01:00.0: BAR 0: assigned to efifb

makes me wonder if this is a firmware issue.

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211189

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #2 from Alex Deucher (alexdeucher@gmail.com) ---
Please attach your dmesg output.  I agree this looks like an sbios issue since
the the efifb is apparently bound to the radeon chip.

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211189

--- Comment #3 from Dominik Mierzejewski (dominik@greysector.net) ---
Created attachment 294673
  --> https://bugzilla.kernel.org/attachment.cgi?id=294673&action=edit
dmesg from kernel 5.10.7

Thanks for your analysis. Full dmesg attached.

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211189

Dominik Mierzejewski (dominik@greysector.net) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
               Tree|Mainline                    |Fedora

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211189

Eduardo Medina (edurayasmedina@outlook.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |edurayasmedina@outlook.com

--- Comment #4 from Eduardo Medina (edurayasmedina@outlook.com) ---
Created attachment 303560
  --> https://bugzilla.kernel.org/attachment.cgi?id=303560&action=edit
dmesg from Intel Alder Lake + Radeon RX 580

Hi. Is there any progress? I get this when I run the "switcherooctl list"
command on my Intel Alder Lake system with a RX 580 GPU.

Device: 0
  Name:        Advanced Micro Devices, Inc. [AMD®/ATI] Ellesmere [Radeon RX
470/480/570/570X/580/580X/590] (Nitro+ Radeon RX 570/580/590)
  Default:     yes
  Environment: DRI_PRIME=pci-0000_01_00_0

Device: 1
  Name:        Intel Corporation AlderLake-S GT1
  Default:     no
  Environment: DRI_PRIME=pci-0000_00_02_0

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211189

--- Comment #5 from Alex Deucher (alexdeucher@gmail.com) ---
What GPU does the sbios use for boot messages before you boot the OS?

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211189

--- Comment #6 from Eduardo Medina (edurayasmedina@outlook.com) ---
How I do to check that? I force the use of the iGPU from the motherboard, but
even with that the system identifies the dedicated card as the iGPU and vice
versa.

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211189

--- Comment #7 from Alex Deucher (alexdeucher@gmail.com) ---
(In reply to Eduardo Medina from comment #6)
> How I do to check that? I force the use of the iGPU from the motherboard,
> but even with that the system identifies the dedicated card as the iGPU and
> vice versa.

When you boot the system, before the OS loads, what GPU displays the sbios
splash screen?  If it's always the dGPU, regardless of what you set in the
sbios, it sounds like the sbios is broken and just always sets the dGPU as
default.  The Linux kernel looks at what the pre-OS environment left when the
kernel loads.

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=211189

--- Comment #8 from Eduardo Medina (edurayasmedina@outlook.com) ---
Well, I'm a stupid person.

When I boot the computer, the splash screen always looks like if it's broken.
But I put the HDMI output on the motherboard and now the cards are well
identified.

Now the color looks a ugly, but switcherooctl list shows the GPUs in order.

Sorry to waste your time.

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

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https://bugzilla.kernel.org/show_bug.cgi?id=211189

--- Comment #9 from Alex Deucher (alexdeucher@gmail.com) ---
No worries.  Can you close this ticket?

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[Bug 211189] vgaarb overrides boot device unexpectedly with Intel and discrete AMDGPU

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https://bugzilla.kernel.org/show_bug.cgi?id=211189

--- Comment #10 from Eduardo Medina (edurayasmedina@outlook.com) ---
No, I can't. Sorry again.

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