NetBSD Problem Report #54540

From  Tue Sep 10 05:37:14 2019
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Date: Tue, 10 Sep 2019 05:37:13 +0000 (UTC)
Subject: v8.1 nor v8.1_rc1 panics on a Dell Precision 390 (AMD64)
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>Number:         54540
>Category:       port-amd64
>Synopsis:       v8.1 nor v8.1_rc1 panics on a Dell Precision 390 (AMD64)
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-amd64-maintainer
>State:          feedback
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Sep 10 05:40:00 +0000 2019
>Last-Modified:  Wed Oct 23 00:00:11 +0000 2019
>Originator:     Mike sienicki
>Release:        V8.1 & V8.1_RC1 Kernel
System panics so uname -a is of no help in this instance.
System panics with cnopen "No console device".  Too difficult to type the entire screen dump.  No way to upload a photo of it.
Can not get this kernel to boot under any circumstance i.e. any available boot option.  System however boots just fine with a v7.2 cdrom.


From: Martin Husemann <>
Subject: Re: port-amd64/54540: v8.1 nor v8.1_rc1 panics on a Dell Precision
 390 (AMD64)
Date: Tue, 10 Sep 2019 08:10:12 +0200

 On Tue, Sep 10, 2019 at 05:40:00AM +0000, wrote:
 > System panics with cnopen "No console device".

 Can you provide details about the installed graphics card, e.g. from the
 7.x dmesg output or pcictl?


State-Changed-From-To: open->feedback
State-Changed-When: Wed, 23 Oct 2019 00:00:11 +0000
Requesting information about graphics setup.
This error message fits a scenario where netbsd things it supports the graphics driver, but it does not.
NetBSD does not properly handle the fallback in this case.
Another option is to forcefully disable the driver that is misbehaving.
Dropping to the boot prompt in the boot menu and typing:
userconf disable i915drmkms*
userconf disable radeon*
userconf disable nouveau*

Should avoid the problem, too.


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