nvidia-driver and vt - blank console on FreeBSD 11

[Stefan Wendler]

----- Original Message -----
> From: "O. Hartmann" <o.hartmann at walstatt.org>
> To: "Stefan Wendler" <stefan.wendler at tngtech.com>
> Cc: "freebsd-x11 at freebsd.org" <freebsd-x11 at FreeBSD.org>
> Sent: Wednesday, November 23, 2016 7:37:45 AM
> Subject: Re: nvidia-driver and vt - blank console on FreeBSD 11

> Am Mon, 21 Nov 2016 22:50:29 +0100
> Stefan Wendler <stefan.wendler at tngtech.com> schrieb:
> 
>> Hi,
>> 
>> I am using the latest nvidia-driver-367.44_2 (modules nvidia.ko and
>> nvidia-modeset.ko have to be loaded in order for X to work) and while X
>> works great after I have started X and want to switch back to console.
>> Alle ttys are just black. The Keyboard is still working and I can switch
>> back to the X session or press Ctrl-C on the black tty and startx again.
>> 
>> My system is a UEFI install and at boot vt_efifb is used automatically
>> no matter what I set kern.vty to.except for "sc" of course. With "sc"
>> set, the system won't boot because with uefi
>> 
>> I have tried like everything I have found on the web (changing kern.vty,
>> setting textmode to 1, etc). But I have also found that nvidia and vt
>> have had some problems when FreeBSD 11 was still CURRENT and that this
>> was fixed?
>> 
>> Is this an open bug again? Is there a way for me to set an option/add a
>> patch or something to make ttys work again after I have started X?
>> 
>> Thx for your support,
>> Stefan
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> 
> This phenomenon is well known since a couple of months for now. On Quadro GPUs,
> the
> console is black in our case and with consumer cards we have a garbled/blocky
> console.
> The Quadro based GPUs tend to refuse a reboot as long as the nvidia-modeset.ko
> kernel
> module is loaded: "shutdown -r now" remains in a kind of endless loop.
> 
> Maybe nVidia has not been informed about this. I'm using 370.28 with UEFI/vt and
> nonUEFI/vt and it is still the same.
> 
> Regards,
> O. Hartmann
> 
> --
> O. Hartmann

I went to the nividia-page to maybe write the support-team when I have seen this changelog(*)
entry for the current version 375.20

 - Added support for FreeBSD 11.0-RELEASE

This version contains some other fixes that have to do with blank consoles(375.20) and vt stuff (375.10) as well. Even though they are not directly related to our problem.
I will try this version tonight and report back. Hopefully this will fix the problems ...

(*)http://www.nvidia.com/Download/driverResults.aspx/111598/en-us

Cheers,
Stefan