[Nouveau] [Bug 91779] Pure EFI: MacBookPro3, 1 (NV84) fails to load nouveau on linux 4.1 -- Invalid ROM contents

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91779

--- Comment #12 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to Jeremy Huddleston Sequoia from comment #11)
> So now that *I'm* up and running, what can we do to help out Joe User here? 
> I'll try out a newer kernel to see if NvForcePost=1 is still required, and
> if not, maybe we'll need a quirk.  And what can we do to get the firmware
> for Joe User?

Did you have a chance to do that? Not sure what can be done for Joe User here
-- we need the vbios. No vbios = no go. VBIOS has info about what connectors
are on the board, how they're hooked up, any scripts that need to be run to
init the card (necessary on resume), scripts to run when changing modes, etc.

It's likely that the EFI bios brings the card up enough to fool nouveau into
thinking that the card is initialized (which it is), but it sets *something* up
differently and nouveau doesn't reset it properly. But the VBIOS init routines
do. So I think Joe User will be stuck having to do the NvForcePost. [You can
look at what all vbios init does with the help of nvbios in envytools.]

Now in order to operate the screen, EFI needs the VBIOS as well. So it has it
somewhere... the usual thing to do is to stick it at the top of PRAMIN for the
OS to be able to read it down the line. Not sure if you have access to modify
something like that.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/nouveau/attachments/20151022/8ecab8fb/attachment-0001.html>