Re: ruby 2.6.3 2.4.25

[<Aiv...@un...>]

>>      Now ruby synced to 2.6.3.
>>
>> Status of fbcon is very suspicious.
>
>Its going threw a change. There is more to go. Once all the fbcon changes
>go in then I will merge the ruby BK tree with your tree.
>
>> For me works tdfxfb , but failed sstfb.
>
>Ug :-( I haven't tested sstfb yet.

I afraid, because another drivers may not work. sstfb works
under ruby-2.6.1

>> fbcon as module must be loaded after fbdev driver. fb console
>> removing not implemented yet.
>
>Actually you can have fbcon built in and the fbdev drivers as modules.
>When you insmod the driver the fbdev drivers are registereed but the
>hardware is not initialized.

Now additional VT requested via notifier_block. register_framebuffer()
calls notifier_call_chain() and so add VT.

>You then use the program con2fb to map the
>framebuffer device to the VC you want.

con2fb breaks conceptual model of linux-ruby, where each VT have VC
one by one. con2fb feature removed by me. To resurect con2fb, we must
have proper indetifier of VT, that is vt->first_vc or vt->vt_num.
then con2fb may bind VT and fbdev, never VC and fbdev.

Aivils Stoss