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

[bugzilla-daemon at freedesktop.org]

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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