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

[Warner Losh]

On Mon, Apr 23, 2018 at 8:52 AM, Warner Losh <imp at bsdimp.com> wrote:

>
>
> 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.
>

https://reviews.freebsd.org/D15169 fixes the problem.

Warner