NetBSD Problem Report #56996

From martin@aprisoft.de  Mon Sep  5 12:34:16 2022
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Message-Id: <20220905123407.B6DD65CC795@emmas.aprisoft.de>
Date: Mon,  5 Sep 2022 14:34:07 +0200 (CEST)
From: martin@NetBSD.org
Reply-To: martin@NetBSD.org
To: gnats-bugs@NetBSD.org
Subject: i915 takes over console eroneously
X-Send-Pr-Version: 3.95

>Number:         56996
>Category:       kern
>Synopsis:       i915 takes over console eroneously
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Sep 05 12:35:01 +0000 2022
>Closed-Date:    Wed Jan 04 14:16:38 +0000 2023
>Last-Modified:  Wed Jan 04 14:16:38 +0000 2023
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.99
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD seven-days-to-the-wolves.aprisoft.de 9.99.99 NetBSD 9.99.99 (GENERIC) #577: Mon Sep 5 14:12:13 CEST 2022 martin@seven-days-to-the-wolves.aprisoft.de:/work/src/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:

I have a machine that boots with serial console and normally does not have
kbd/display connected or used.

But a -current GENERIC kernel still tries to use framebuffer console:

[..]
acpivga0:   0x0400 (acpiout15): Unknown Output Device, head 0
lpt0 at acpi0 (LPTE, PNP0400-0): io 0x378-0x37f irq 5
allocated pic ioapic0 type edge pin 5 level 6 to cpu0 slot 1 idt entry 97
com0 at acpi0 (UAR1, PNP0501-0): io 0x3f8-0x3ff irq 4
com0: ns16550a, 16-byte FIFO
com0: console
[..]
wsdisplay0 at intelfb0 kbdmux 1: console (default, vt100 emulation)
wsmux1: connecting to wsdisplay0
wskbd0: connecting to wsdisplay0


>How-To-Repeat:

Boot a i915 machine with serial console?

>Fix:
n/a

>Release-Note:

>Audit-Trail:
From: "Taylor R Campbell" <riastradh@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc: 
Subject: PR/56996 CVS commit: src/sys/arch/x86
Date: Mon, 5 Sep 2022 14:18:51 +0000

 Module Name:	src
 Committed By:	riastradh
 Date:		Mon Sep  5 14:18:51 UTC 2022

 Modified Files:
 	src/sys/arch/x86/pci: pci_machdep.c
 	src/sys/arch/x86/x86: consinit.c

 Log Message:
 x86: Fix interaction between consinit, device_pci_register, and drm.

 Leave an essay on what's going on here in both places with
 cross-references.

 PR kern/56996


 To generate a diff of this commit:
 cvs rdiff -u -r1.91 -r1.92 src/sys/arch/x86/pci/pci_machdep.c
 cvs rdiff -u -r1.34 -r1.35 src/sys/arch/x86/x86/consinit.c

 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

State-Changed-From-To: open->closed
State-Changed-By: martin@NetBSD.org
State-Changed-When: Wed, 04 Jan 2023 14:16:38 +0000
State-Changed-Why:
Fixed, thanks!


>Unformatted:

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