port-i386/53292: uefi boot countdown is invisible

[martin%NetBSD.org@localhost]

>Number:         53292
>Category:       port-i386
>Synopsis:       uefi boot countdown is invisible
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 16 09:15:00 +0000 2018
>Originator:     Martin Husemann
>Release:        NetBSD 8.99.17
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD seven-days-to-the-wolves.aprisoft.de 8.99.17 NetBSD 8.99.17 (GENERIC) #220: Thu May 10 09:07:57 CEST 2018 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:

The uefi boot (e.g. on install images) shows a countdown untill the
default option is chosen. This countdown is invisible though. The screen
displays a static:

 Option ... will be chosen in #

(where # marks the cursor), no updates happen, and after a while the option
is chosen.

>How-To-Repeat:

Boot the uefi install image

>Fix:
n/a