Screen resolution issue - Printable Version

Screen resolution issue - Printable Version

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+--- Thread: Screen resolution issue (/showthread.php?tid=7735)

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Screen resolution issue - LostOne - 05-18-2025

Greetings oh people of wisdom,

I have a Pi 3B with a HDMI touch screen 1024 x 600 running the latest version of Moode audio.
the screen works fine in terminal mode, and when using Pi OS also. but not when I turn on local display.

Connector 0 (33) HDMI-A-1 (connected)
Encoder 0 (32) TMDS
Crtc 3 (95) 1024x600@60.02 51.800 1024/48/32/266/+ 600/3/6/21/+ 60 (60.02) D
Plane 3 (84) fb-id: 668 (crtcs: 3) 0,0 1024x600 -> 0,0 1024x600 (XR24 AR24 AB24 XB24 RG16 BG16 AR15 XR15 RG24 BG24 YU16 YV16 YU24 YV24 YU12 YV12 NV12 NV21 NV16 NV61 RGB8 BGR8 XR12 AR12 XB12 AB12 BX12 BA12 RX12 RA12)
FB 668 1024x600 RG16

when fist turned on the SSL session shows 1024x 600 next to the option
when refreshed it shows as 640 x 480 and does not display correctly.
[attachment=4717]
the bootup of the Pi looks like the local display as well. but is fine once booted.
[attachment=4720]
any advice on if I can get the display to function would be greatly appreciated.

Cheers,
Neil

RE: Screen resolution issue - Tim Curtis - 05-18-2025

What is the make and model of the screen?

Maybe try "Disable GPU" and "DOWNGRADE Chromium browser"

RE: Screen resolution issue - LostOne - 05-18-2025

Thanks Tim,
I will try those.

The screen is an elcheapo ..
https://www.aliexpress.com/item/1005008319310657.html?spm=a2g0o.order_list.order_list_main.17.5adf1802qvjogt

Asked them for a manual and drivers, nothing forthcoming yet.

Cheers,
Neil

RE: Screen resolution issue - LostOne - 05-18-2025

which version should I be installing?

RE: Screen resolution issue - Tim Curtis - 05-19-2025

(05-18-2025, 11:25 PM)LostOne Wrote: which version should I be installing?

Do you mean Chromium?

Theres a DOWNGRADE button in the Peripheral Config screen but its disabled and already at the correct 126 version on new images.

RE: Screen resolution issue - LostOne - 05-19-2025

ah, ok. Thanks for that, yes it is running version 126.
So with that version and disabling the GPU disabled in the software, no change to the display.

RE: Screen resolution issue - marlab - 05-20-2025

Yes, I'm having very similar/the same problem (this 7" screen and RPi 3b). Updated MoOde yesterday to latest release, but it still does not work. The screen itself works fine, it switched to high res automatically (showing Linux console and all startup messages and colours in small print), but no reset/setting change etc actually helps. The screen has additional power supply attached. In theory, it could run without it, but when doing - so I got frequent underpower messages. Downgrade button disabled and switching off GPU does not help..

RE: Screen resolution issue - marlab - 05-20-2025

Update: it started showing moOde screen with "dtoverlay=vc4-kms-v3d" enabled in /boot/firmware/config.txt
But... it's pretty slow, I might need upgrade to RPi 4 to actually enjoy it.

Ah, forgot to add:

Code:
Connector 0 (33) HDMI-A-1 (connected)

  Encoder 0 (32) TMDS

    Crtc 3 (95) 1024x600@60.04 49.000 1024/5/13/270/- 600/2/3/17/+ 60 (60.04)

      Plane 3 (84) fb-id: 672 (crtcs: 3) 0,0 1024x600 -> 0,0 1024x600 (XR24 AR24 AB24 XB24 RG16 BG16 AR15 XR15 RG24 BG24 YU16 YV16 YU24 YV24 YU12 YV12 NV12 NV21 NV16 NV61 RGB8 BGR8 XR12 AR12 XB12 AB12 BX12 BA12 RX12 RA12)

        FB 672 1024x600 XR24

      Plane 55 (657) fb-id: 671 (crtcs: 3) 0,0 64x64 -> 981,590 64x64 (XR24 AR24 AB24 XB24 RG16 BG16 AR15 XR15 RG24 BG24 YU16 YV16 YU24 YV24 YU12 YV12 NV12 NV21 NV16 NV61 RGB8 BGR8 XR12 AR12 XB12 AB12 BX12 BA12 RX12 RA12)

        FB 671 64x64 AR24

I've tried to force lower resolution in config.txt (hoping for performance boost), but it keeps defaulting to high res...

RE: Screen resolution issue - LostOne - 05-21-2025

Hi marlab, if the Pi 4 Works please let me know..

RE: Screen resolution issue - Tim Curtis - 05-21-2025

Just an FYI: that the "Integrated audio" setting (for <= Pi4) in the Audio Config screen that controls whether the Headphone jack is enabled for Audio output does this by switching the between the Firmware (legacy) and Kernel mode video drivers.

Below is the help. Note the limitations when using Firmware mode.

Kernel mode: Default vc4-kms-v3d driver for advanced HDMI capabilities.
Firmware mode: Legacy snd-bcm2835 driver to support Pi Headphone only configuration. No other audio, video or system features are supported.