@thd79 said in tvservice not able to change resolution on the fly:

This has definitely worked in the past for me, has support for it been removed recently? The same settings work fine when specified at boot time.

The tvservice and support for video mode switching are not part of RetroPie, but a Raspbian/Kernel+firmware feature - it was certainly not removed in RetroPie. What does 'in the past' mean ? 1 year, 1 week, etc. , before doing any kernel/firmware updates, using a certain RetroPie version maybe ?

What version of RetroPie are you running (specifically) and how it was installed ? Can you post your config.txt configuration file ?

Which emulator are you using ?

@BuZz

Yes. It was that. Changed back the bluetooth connect mode to default and is solved. It was in background mode because my SNES30 joystick was temperamental about connecting with Retropie.

I did an update from the the old Retropie version rather than a new install. And maybe because that the bug still present.

Thanks a lot.

Ah, my apologies, you are absolutely right. I was using the pre-built image on a Pi3 and the manual install on a Pi4. Once I flashed an SD card with the pre-built image for the Pi4 and booted that up I saw the same video options. Thanks for the insight!

I've been reading a littl emore and it seems it is possible to ignore the screens edid data. Instead I can use an edid.dat file with the values I want.

I think I have to add hdmi_ignore_edid and hmi_edid_file to config.txt

The only thing I don't know is how to create a an edid.dat file with the correct information.
If someone knows (or even better, give me a better edid file) how to do this I think this problem is solveable.

Thanks, that did it.

Glad it worked out !
NOTE: I added some code blocks around the scripts code so it's easier to see and (maybe) copy&paste for future users.

@quicksilver said in Can no longer select video mode after update:

@psyke83 thanks it looks like it's working again. Something I've noticed in general though is that I have multiple listings for the same resolution/refresh rate. On previous pi models there were usually just the different CEA modes listed. Is this difference because of the different drivers/hardware that the pi 4 utilizes?

Yes, we query the available modes via the kernel modesetting API, which doesn't distinguish between CEA or DMT modes. If you look carefully at the duplicates in your list, however, you'll see that there are differences beyond the resolution and refresh rate, such as the aspect ratio encoding, horizontal/vertical sync polarity, etc.

Technically it's still possible to use tvservice for querying and changing modes on RPI4, but if you do change the mode, the underlying KMS framebuffer subsystem will not be aware of the change. This would mean that your monitor would be set to the correct mode, but the applications themselves would detect the framebuffer/refresh to still be set to the original resolution and thus show a cropped image, etc.

@Eldrethor
Will check it thanks :)

Is it even possible to change modes on the fly while using composite out? I just tried booting with "good" 15khz hdmi timings that aren't sdtv_mode and it doesnt't work.

Switched back to VGA and uncommented 'hdmi_force_hotplug=1' and it seems to be working great! We will see how the sound is when I hook up the amp and speakers, thanks everyone for the advice! Really appreciate it!

@mitu said in Resolution/Video Mode/Aspect Ratio...:

Set your Pi to 1080p and then don't alter any configurations - you don't need to choose 1080p again in the launch menu.

This worked great, but....

I had to edit /boot/config.txt directly and tell it to ignore the resolution my tv was requesting.

This was the missing magic for your simple solution to work for me.

hdmi_ignore_edid=0xa5000080

https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

You can also set the resolution in the same file.

Otherwise, regardless of how I set the right resolution something was wrong with either the desktop, console, or retropie.

@mitu

i've tried that already with no luck
the resolution within the black bar will change, but it wont show the full screen

the smaller Res i go, the more the image gets cut out within the black bars (kind of like enlarging an image, or zooming in with your phone by using two fingers)
and the highest Res it will go (1920x1080 at 60hz) will not display the entire image