display size

Discussions about the Ryde "Set-top Box" Style Digital ATV Receiver. See https://wiki.batc.org.uk/Ryde_Receiver
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Pa3fbx
Posts: 178
Joined: Fri Oct 16, 2020 1:08 pm

display size

Post by Pa3fbx » Sat Dec 26, 2020 8:19 pm

Hi there,
I have running the ryde software for some weeks now.
I have a smal hdmi touchscreen connected to the Pi4.
I have 2 smal problems witch keeps bothering me.

1. first problem is the startup.
it never works in 1 go. After applying power to both MT express, screen and Pi4 it boots nice and gives me nice sound but no picture...
i allways need to restart the app via the remote.
after restarting the software runs flawless for hours...

2. my screen is filled with the red screen of not locked.
Its a 16:9 screen and all seems wel but all pictures are squeesed with a black band both top end bottem.
No matter what size is been transimitted.
even the mute simbol is in the black top right.

So how should i get the complete screen filled...

These minor issues are just my loss but a solution would be appreciated...

73es and merry Christmas
Benno , PA3FBX

dl9sec
Posts: 27
Joined: Fri Dec 18, 2020 1:34 pm

Re: display size

Post by dl9sec » Sun Dec 27, 2020 8:16 am

Morning Benno,

you could try to force HDMI mode in your config.txt at your RPi:

hdmi_force_hotplug=1
hdmi_group=1
hdmi_mode=16
hdmi_drive=2

(see https://www.raspberrypi.org/documentati ... t/video.md for details)

Maybe the overscan parameters are active, so comment them out.

Let me know, it that works for you...

73, Thorsten

BTW: Great xmas lightshow at your garage :D

G8GKQ
Site Admin
Posts: 2798
Joined: Sun Mar 22, 2009 1:21 pm

Re: display size

Post by G8GKQ » Sun Dec 27, 2020 12:52 pm

Hi Benno

The "No video at start" is a VLC problem that I have seen before on the Portsdown. I had not seen it on the Ryde before. I'll have a think about it.

Please could you give us as much information about your display as possible? Including running

Code: Select all

tvservice -s
from the command line to see what the system thinks about it.

Thanks

Dave

Pa3fbx
Posts: 178
Joined: Fri Oct 16, 2020 1:08 pm

Re: display size

Post by Pa3fbx » Sun Dec 27, 2020 1:41 pm

Thanks all for the support...

Dave, i typed the command in putty

pi@Raspberry:~ $ tvservice -s
state 0xa [HDMI CUSTOM RGB lim 4:3], 720x576 @ 50.00Hz, progressive

I will try Thorstens advice but lack some info where to find the config.txt...
Need some more searching...

I will also make a smal video on startup if i ever get my bench cleaned up...

Thanks sofar.
73es Benno

G8GKQ
Site Admin
Posts: 2798
Joined: Sun Mar 22, 2009 1:21 pm

Re: display size

Post by G8GKQ » Sun Dec 27, 2020 1:58 pm

Hi Benno

From Putty, you can edit config.txt with the command:

Code: Select all

sudo nano /boot/config.txt
Use ctrl-x and then y and enter to exit and save.

Not sure that Thorsten's settings will work for you. You could try

Code: Select all

hdmi_group=1
hdmi_mode=16
hdmi_drive=2
But I'm afraid trial and error,(and lots of reboots) is required

Dave

Pa3fbx
Posts: 178
Joined: Fri Oct 16, 2020 1:08 pm

Re: display size

Post by Pa3fbx » Sun Dec 27, 2020 8:56 pm

Thanks dave...

Found my best results...
hdmi_group=2
hdmi_mode=85
hdmi_drive=2

This tells my pi that i am using a monitor (group 2) and for this group there is a seperate mode set...

82 1920x1080 60Hz 16:9 1080p
83 1600x900 60Hz 16:9 reduced blanking
84 2048x1152 60Hz 16:9 reduced blanking
85 1280x720 60Hz 16:9 720p

And just to be sure i needed the drive on 2...

Now all stations are full screen and 16:9..
OSD still fine...

I'll try next few days the startup as it looks solved as well but that may just luck...

Best regards
73es Benno

dl9sec
Posts: 27
Joined: Fri Dec 18, 2020 1:34 pm

Re: display size

Post by dl9sec » Mon Dec 28, 2020 12:28 pm

Hi Benno,

ah, ok no FHD, but HD.
I think group 2 mode 85 is the same as group 1 mode 4.

Nevertheless, great that you got fullscreen now :)

73, Thorsten

Pa3fbx
Posts: 178
Joined: Fri Oct 16, 2020 1:08 pm

Re: display size

Post by Pa3fbx » Mon Dec 28, 2020 3:42 pm

Yes Thorsten. I have Tried fhd (82) but my Monitor was switching on and off a few Times before i got A Steady Image.. and there is no visable difference on A 7 inch display between HD and fhd. ..

IT works for me... And i AM more on qso in low res. than hres movies i netter download myself ....



Benno, PA3FBX..

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