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kern/55982: kernel crash booting Dell T430 with Radeon video card
>Number: 55982
>Category: kern
>Synopsis: Subject: kernel crash booting Dell T430 with Radeon video card
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Feb 08 19:50:00 +0000 2021
>Originator: Hisashi Todd Fujinaka <htodd%twofifty.com@localhost>
>Release: NetBSD 9.99.80
>Organization:
None
>Environment:
System: NetBSD mara.i8u.org 9.99.80 NetBSD 9.99.80 (MARA) #2879: Sun Feb 7 13:07:08 PST 2021 htodd%mara.i8u.org@localhost:/usr/obj/amd64/sys/arch/amd64/compile/MARA amd64
Architecture: x86_64
Machine: amd64
>Description:
I have a Dell T430 that has internal video and I added a ATI video card. With both video cards enabled,
I get a crash in radeon_bios.c:724 ... Unable to locate a BIOS ROM. Screenshot of crash is at
https://www.i8u.org/~htodd/radeon-crash.png
or
https://www.i8u.org/~htodd/radeon-crash.jpg
If I turn off the internal video, I get an NMI after "pci1 at ppb0 bus 2". Screenshot of crash is at
https://www.i8u.org/~htodd/crash.png
or
https://www.i8u.org/~htodd/crash.jpg
I've been asked to see if I can access the BIOS using dd, but I'm not sure what address to dd from.
>How-To-Repeat:
Boot with GENERIC (or my custom kernel with DRMKMS Radeon enabled).
>Fix:
Yes please.
>Unformatted:
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