fbcon on one of multiple displays

Eric Nelson eric at nelint.com
Mon Dec 4 13:45:18 UTC 2023


Thanks Javier,

On 12/4/23 03:11, Javier Martinez Canillas wrote:
> Eric Nelson <eric at nelint.com> writes:
> 
> Hello Eric,
> 
>> Hi all,
>>
>> Is there a way to configure a framebuffer console on a specific display
>> on a machine with multiple displays?
>>
> 
> Have you looked at https://www.kernel.org/doc/Documentation/fb/fbcon.txt ?
> 
> There is a sysfb interface to bind / unbind fbdev devices to fbcon's VT
> (/sys/class/vtconsole/vtcon1/bind) and also kernel command line parameter
> to choose which fbdev driver is mapped to which VT console (fbcon=map:n).
> 

I have seen this, but it's not clear how we can use this. In our case, 
we have a single driver for two displays.

I hope to get a device on my desk this week to test it out.


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