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Date:      Tue, 4 Aug 2020 19:04:21 +0700
From:      Eugene Grosbein <eugen@grosbein.net>
To:        Ottavio Caruso <ottavio2006-usenet2012@yahoo.com>, freebsd-hackers@freebsd.org
Subject:   Re: [xpost,repost] VGA false positive in dmesg?
Message-ID:  <e520ac9c-a81e-1c96-1008-44da17fd74c2@grosbein.net>
In-Reply-To: <rgbha1$2ua$1@ciao.gmane.io>
References:  <rgb51b$10i4$1@ciao.gmane.io> <a2a4cd6a-1889-86f1-49e4-4be1fb0bb7fa@grosbein.net> <rgbdnd$546$1@ciao.gmane.io> <8aa25a20-58c7-f3d2-0826-3341c1acc134@grosbein.net> <rgbha1$2ua$1@ciao.gmane.io>

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04.08.2020 18:37, Ottavio Caruso via freebsd-hackers wrote:

>>>> You can also try adding to /boot/loader.conf:
>>>>
>>>> hint.vtvga.0.disabled=1
>>>
>>> This doesn't seem to work:
>>>
>>> oc@FreeBSD:~ % cat /boot/loader.conf
>>> hint.vtvga.0.disabled=1
>>> oc@FreeBSD:~ % dmesg | grep -i vga        VT(vga): text 80x25
>>> vtvga0: <VT VGA driver> on motherboard
>>> vga0: <Generic ISA VGA> at port 0x3b0-0x3bb iomem 0xb0000-0xb7fff pnpid PNP0900 on isa0
>>> VT(vga): text 80x25
>>> vga0: <Generic ISA VGA> at port 0x3b0-0x3bb iomem 0xb0000-0xb7fff pnpid PNP0900 on isa0
>>
>> But is this device used? See output of conscontrol(8) and look for ttyv0
> 
> oc@FreeBSD:~ % conscontrol list
> Configured: ttyu0
>  Available: ttyu0,ttyv0
>     Muting: off
> 
> 
> I'm a bit confused here. Do both ttyu0 and ttyv0 refer to the serial console?

No, only ttyu0 is (serial) comconsole; ttyv0 is vidconsole.
ttyv0 is available but not configured to serve as system console.

> Do I need ttyv0?

Not necessary.

> Is it safe to comment ttyv0 in /etc/ttys?

Yes, if you already verified that serial console works as expected.




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