Re: port-amd64/59756: NetBSD 10.1 UEFI bootloader does not work on ASRock Rack B650D4U mainboard with EPYC 4005 series CPU

["Bernd Sieker via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR port-amd64/59756; it has been noted by GNATS.

From: Bernd Sieker <bernd.sieker%posteo.net@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-amd64/59756: NetBSD 10.1 UEFI bootloader does not work on
 ASRock Rack B650D4U mainboard with EPYC 4005 series CPU
Date: Fri, 14 Nov 2025 23:27:41 +0000

 On 14.11.25 07:55, RVP via gnats wrote:
 > The following reply was made to PR port-amd64/59756; it has been noted by GNATS.
 > 
 > From: RVP <rvp%SDF.ORG@localhost>
 > To: gnats-bugs%netbsd.org@localhost
 > Cc: Paul Ripke <stix%stix.id.au@localhost>
 > Subject: Re: port-amd64/59756: NetBSD 10.1 UEFI bootloader does not work on
 >   ASRock Rack B650D4U mainboard with EPYC 4005 series CPU
 > Date: Fri, 14 Nov 2025 06:51:08 +0000 (UTC)
 > 
 >   On Thu, 13 Nov 2025, bernd.sieker%posteo.net@localhost wrote:
 >   
 >   >> Description:
 >   > The system is an ASRock Rack B650D4U server mainboard with an AMD
 >   > EPYC 4465P CPU and two M.2 nvme SSDs.
 >   > [...]
 >   > Whenever the system is set to UEFI boot, only a blank screen with
 >   > a cursor on the upper left is shown.
 >   >
 >   
 >   Maybe the same as: PR misc/59151: efiboot hangs on new motherboard.
 >   
 >   Can you see if Paul's patch works for you?
 >   
 >   -RVP
 >   
 
 Thanks.
 
 It works halfway. The efi bootloader now loads and displays the NetBSD 
 boot menu, but after it loads the kernel, the screen goes blank and 
 stays that way. It does not appear to boot, e. g. no dhcp packets are seen.
 
 
 Bernd