[Bug 57349] New: [nouveau, EFI] xf86-video-nouveau-1.0.2 and above fail to find device with X 1.13.0

[Bug 57349] New: [nouveau, EFI] xf86-video-nouveau-1.0.2 and above fail to find device with X 1.13.0

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=57349

          Priority: medium
            Bug ID: 57349
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [nouveau, EFI] xf86-video-nouveau-1.0.2 and above fail
                    to find device with X 1.13.0
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: bonbons67@internet.lu
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/other
           Product: DRI

Commit 2f48b8f462a03cb92db9e9a7ae1957eb27473965 "nouveau: add platform bus
support" added in -1.0.2 prevents X from starting on a MacBookAir booted via
EFI.

As debugged on IRC with airlied, the cause is that kernel reports "boot_vga"
being "0" for the GeForce 9400M (C79) when efifb is not being used (not
compiled into kernel whereas nouveau is). [booting with efifb built-in causes
"boot_vga" to be "1"]

When there is no other GPU around and KMS (+ fbcon) is active on that GPU X
should accept it as well (or kernel adjust boot_vga as needed even while efifb
is not compiled in/used).

Kernel used if 3.7-rc5 (with efifb disabled), 3.7-rc6 (with efifb built-in)

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[Bug 57349] [nouveau, EFI] xf86-video-nouveau-1.0.2 and above fail to find device with X 1.13.0

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=57349

Bruno <bonbons67@internet.lu> changed:

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

--- Comment #1 from Bruno <bonbons67@internet.lu> ---
Fixed in 3.17-rc1 with commit 20cde694027e, though a fix for regression on
multi-head Apple-EFI systems pending.

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