Hi Rahul,
There's nothing to be displayed on the other screen and by default
there's black curtain installed on it. Even if it wasn't you'd still see
black/blank screen. Keep in mind that the application itself doesn't
extend to cover the other screen.
You should be able to display another application on other output my
modifying the ini configuration file as specified at [1]. The
application needs to have an application id set-up, otherwise we won't
be able to place it accordingly. You should be able to corroborate that
by checking out the systemd journal for agl-compositor. Keep in mind you
need to restart the user session for changes to be applied.
For cloning, we have similar configuration entry, it's called "same-as"
where you specify the output being a clone of another. This is indeed
undocumented but it is also untested, so I don't know if this works or
not.
Further more, this requires proper hardware, meaning that the underlying
hardware would power up all connectors from same/shared source.
Underneath there's no duplication/cloning per-se, the same buffer is
being scanned out to all outputs/connectors attached to that source.
I believe the DRM backend would actually complain/let you know if the ^
aren't possible.
Hope this helps,
[1]
https://docs.automotivelinux.org/en/octopus/#06_Component_Documentation/02_agl_compositor/#explicit-output
On 4/25/23 09:35, Kumar1, Rahul via lists.automotivelinux.org wrote:
[AMD Official Use Only - General]
Hi All ,
When I try to boot two displays (HDMI and DP) with agl demo image,
display boots only with HDMI monitor, and DP monitor remains blank.
I think we can make both monitor work as extended and clone mode, do we
have any documentation or steps for this.
Best Regards,
Rahul
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