On 1/22/20 12:13 AM, Peter Robinson wrote:
> I'm running Fedora Rawhide on an RPi 4, and noticed that the
video wasn't quite filling the monitor. Looking at Xorg.0.log, I saw:
I need more context. What architecture, what image etc, what desktop
environment. Custom builds etc, as we've not yet announced anything
official around RPi4 and there's no accelerated graphics upstream yet
and on older gens this problem had never been reported.
I suspect you're using FB graphics.
You are correct that I am using FB graphics, but I don't think that is the problem. I
see the exact same behavior with both the Raspian and Manjaro operating systems on my
RPi4. In all cases, I have a large black border unless I put
"disable_overscan=1" into /boot/config.txt. I've also tried two different
monitors, and two different HDMI cables. It is always the same problem.
Perhaps this behavior is new to the RPi4, but I learned about this fix from [1], which is
from 2013, so some people at least have had the issue on older hardware.
Here are the details of my Fedora setup:
Architecture: aarch64
Image: Fedora-Workstation-Rawhide-20200110.n.0.aarch64.raw.xz
Desktop: KDE (but problem shows up even on the login screen)
According to dmesg (copy attached), the system starts out on simple-framebuffer, then I
see a message: "switching to EFI VGA from simple". But like I said above, I
don't think that is the issue.
I understand that there is no official RPi4 support in Fedora yet, and maybe the problem
will go away when the accelerated graphics driver becomes available. But since Raspian
and Manjaro behave the same, I suspect the accelerated graphics driver will have the same
problem.
[1]
https://www.raspberrypi.org/forums/viewtopic.php?t=47152
Steve
> Virtual size is 1824x984 (pitch 1824)
>
> I fixed that by adding a line to /boot/efi/config.txt:
>
> disable_overscan=1
>
> Now, the video fits the monitor perfectly, and Xorg.0.log shows:
>
> Virtual size is 1920x1080 (pitch 1920)
>
> as expected. /boot/efi/config.txt is owned by bcm283x-firmware. Should I write a
bug against bcm283x-firmware to add this line?
>
> Steve
> _______________________________________________
> arm mailing list -- arm(a)lists.fedoraproject.org
> To unsubscribe send an email to arm-leave(a)lists.fedoraproject.org
> Fedora Code of Conduct:
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
> List Guidelines:
https://fedoraproject.org/wiki/Mailing_list_guidelines
> List Archives:
https://lists.fedoraproject.org/archives/list/arm@lists.fedoraproject.org