svn commit: r330834 - head/sys/dev/vt/hw/vga

[Warner Losh]

On Mon, Apr 23, 2018 at 7:43 AM, Tom Jones <thj at freebsd.org> wrote:

> On Tue, Mar 13, 2018 at 09:38:54AM +0000, Roger Pau Monné wrote:
> > Author: royger
> > Date: Tue Mar 13 09:38:53 2018
> > New Revision: 330834
> > URL: https://svnweb.freebsd.org/changeset/base/330834
> >
> > Log:
> >   vt_vga: check if VGA is available from ACPI FADT table
> >
> >   On x86 the IA-PC Boot Flags in the FADT can signal whether VGA is
> >   available or not.
> >
> >   Sponsored by:               Citrix systems R&D
> >   Reviewed by:                marcel
> >   Differential revision:      https://reviews.freebsd.org/D14397
> >
> > Modified:
> >   head/sys/dev/vt/hw/vga/vt_vga.c
>
> Hi,
>
> Running the latest vm snapshots on bhyve, /dev/ttyv[0-b] devices are not
> created leading to getty spamming the console:
>
> Apr 23 13:28:49 freebsd getty[710]: open /dev/ttyv6: No such file or
> directory
> Apr 23 13:28:49 freebsd getty[709]: open /dev/ttyv1: No such file or
> directory
> Apr 23 13:28:49 freebsd getty[715]: open /dev/ttyv5: No such file or
> directory
> Apr 23 13:28:49 freebsd getty[713]: open /dev/ttyv7: No such file or
> directory
>
> Tracking through snapshots the change is somewhere between:
>
> good ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/VM-IMAGES/
> 12.0-CURRENT/amd64/20180307/
> bad  ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/VM-IMAGES/
> 12.0-CURRENT/amd64/20180315/
>
> reverting r330834 returns to the old behaviour.
>

You need to change /etc/ttys to have 'onifexists' or 'off' for those
devices. There was a change to init/getty to support pluggable TTYs that is
causing it. Historically, there was no 'onifexists' so init/getty basically
stopped looking at a device that wasn't there. Now we have TTYs that we
want to present a getty on come and go, we need to adapt.

Warner