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Re: kern/52440 (nouveau blank screen w/some cards after MSI change in 7.99.64)
The following reply was made to PR kern/52440; it has been noted by GNATS.
From: "John D. Baker" <jdbaker%consolidated.net@localhost>
Subject: Re: kern/52440 (nouveau blank screen w/some cards after MSI change
Date: Mon, 24 Dec 2018 10:23:40 -0600 (CST)
On Mon, 24 Dec 2018, mrg%NetBSD.org@localhost wrote:
> Synopsis: nouveau blank screen w/some cards after MSI change in 7.99.64
> State-Changed-From-To: open->feedback
> State-Changed-By: mrg%NetBSD.org@localhost
> State-Changed-When: Mon, 24 Dec 2018 09:22:15 +0000
> this should be working now. can you check? thanks.
I'll see if I can test once amd64-current is buildable again...
I'm concerned that there are two places where MSI/MSIX enable/disable
are being done. Earlier in the life of this PR, MSI/MSIX was disabled
I kept a test tree which rolled the affected file back so MSI/MSIX was
enabled. With the recent import of newer DRMKMS code, the relevant
portion of the "pci.h" header file was given its own "linux_pci.c" file:
and I've since kept a local patch to re-enable MSI/MSIX in my test tree.
I've since seen the following:
disabling MSI/MSIX in "nouveau_pci.c" specifically.
I suppose my test tree will need to patch this file as well to test
MSI/MSIX on nouveau. (As mentioned early in this PR, I have access to
one machine which worked fine with nouveau MSI/MSIX enabled while the
rest did not. I have not tested recently, but will again as soon as
I can get amd64-HEAD to build.)
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