Nouveau - Sep 2017 - [Bug 103033] New: nouveau can't start my discrete nvidia card (BIOS / ACPI error)

https://bugs.freedesktop.org/show_bug.cgi?id=103033

            Bug ID: 103033
           Summary: nouveau can't start my discrete nvidia card (BIOS /
                    ACPI error)
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: alexandre.dutriaux at free.fr
        QA Contact: xorg-team at lists.x.org

Created attachment 134558
  --> https://bugs.freedesktop.org/attachment.cgi?id=134558&action=edit
dmesg with nouveau.debug=trace + acpidump + xorg.conf

I've got a portable computer with an Intel graphic card and a nvidia
discrete
card (G 105M).
I've installed Fedora 26. 
Everything should run fine with nouveau and Prime.

However, xrandr --listproviders only send me 1 provider, which is the Intel
card. 

I've seen a problem with the BIOS and the nvidia card : 

[    2.777871] nouveau 0000:01:00.0: Invalid PCI ROM header signature:
expecting 0xaa55, got 0x0000
[    2.777887] nouveau 0000:01:00.0: bios: unable to locate usable image
[    2.777895] nouveau 0000:01:00.0: bios ctor failed, -22

-----------
$ lspci |grep -E "3D|VGA"
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
01:00.0 VGA compatible controller: NVIDIA Corporation GT218M [GeForce G 105M]
(rev a2)

$ xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x46 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs:
3 outputs: 4 associated providers: 0 name:Intel

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https://bugs.freedesktop.org/show_bug.cgi?id=103033

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|nouveau can't start my      |[NVA8] nouveau can't
start
                   |discrete nvidia card (BIOS  |my discrete nvidia card
                   |/ ACPI error)               |(BIOS / ACPI error)

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
The issue is that shadow_fetch() fails for ACPI. It tries to read a
0xf800-sized image and apparently can't. Both the fast and slow methods end
up
the same. Also it's NPDE is set to "HYB$", although looking at the
code that
shouldn't really matter.

However something's there, since it gets far enough to e.g. check the NPDE.
Either the _ROM method is buggy, or we're driving it slightly incorrectly.

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Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #2 from Martin Peres <martin.peres at free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
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https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/373.

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