Hi Alex,
On 12/4/23 07:40, Alex Deucher wrote:
On Mon, Dec 4, 2023 at 8:52 AM Eric Nelson <eric@xxxxxxxxxx> wrote:
Thanks Javier,
On 12/4/23 03:11, Javier Martinez Canillas wrote:
Eric Nelson <eric@xxxxxxxxxx> 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.
Are you referring to two devices that just both happen to use the same
driver, or multiple displays driving by a single device? For the
latter, drm drivers at least only expose a single "display" via the
fbcon emulation.
Alex
A little of both.
There are multiple displays through a single driver, but the fbcon
emulation is only creating a single framebuffer device.
What we're aiming for is pretty simple. We just want to get a splash
screen (fb logo) to display on one of them and haven't found the right path.
