T95 s1 issue with display

compusat22 · July 21, 2023, 9:18pm

Anyone know why this is happening,
New install on a t95 s1, s905w 2g,
When it was first booted with latest ng build, it doesn’t display anything but boots up and is available on ssh, when resolution is put in config.ini it displays the emulec boot screen perfectly but black on emulationstation.
When resolution put into emulec.conf it shows a garbled display with 4 overlaping screens.

On same bo latest coreelec build same issue when installed first installed (all black) but when resolution is placed in boot, it displays a similar corrupt coreelec boot screen but Kodi displays perfectly.
Batocera runs perfectly but can’t sort analogue audio on it.

Langerz82 · July 22, 2023, 10:02am

s905w have a locked frame buffer resolution of 1080p that cannot be changed in the latest version.

If you want to change resolution you have to apply this PR:

github.com/EmuELEC/EmuELEC

EE - Display Resolution - Configurable FrameBuffer, and some fixes.

EmuELEC:dev ← Langerz82:dev-amlogic-diff-res-fix

opened 02:31AM - 06 Jul 23 UTC

Langerz82

+202 -283

This patch enables the user to set the framebuffer values different from the out…put resolution. CVBS is a classic example of using a different internal resolution, however others might benefit from being able to output in whatever there external display shows and have a lower or higher framebuffer resolution. It would also be an advantage for 2D games to use lower resolutions and perform faster, as well as some 3D emulation depending on the type. I will make frame buffer resolutions and bordering configurable in ES in the near future, I have some code but it's outdated with this script and possibly causing some memory allocation issues which I need to fix. For now to change the framebuffer resolution from standard (matched to resolution) to custom the user needs to enter into emuelec.conf for example with 720p60hz: ``` ee_es.framebuffer.720p60hz=640 480 ee_emu.framebuffer.720p60hz=640 480 ``` ee_es stands for the fb resolution in emulationstation. ee_emu stands for when the user enters an emulator. 720p60hz is an example display mode we are changing it for. 640 480 is telling the setres script to set the fb 640px width, 480px height. This patch also allows setting black borders to the framebuffer by giving the x1,y1,x2,y2 location of the pixels to shift the display to. Please note the following is the pixel locations NOT the x,y width, and height, that would be calculated as so: ``` x1 = x_pos y1 = y_pos x2 = x1+width-1 y2 = y1+height-1 ``` So for a 10 pixel border around a 640x480 frame it would be: width = 640-20 (double 10 pixels) height = 480-20 (double 10 pixels) ``` ee_emu.framebuffer_border.720p60hz=10 10 629 469 ``` Note - Old Amlogic (s905M, s905W) devices have a locked framebuffer so you can change display mode, but cannot change it's 1920 1080 internal buffer. edit: This PR is designed to work with ES PR: https://github.com/EmuELEC/emuelec-emulationstation/pull/78

And recompile a build. But bear in mind internally its still 1080p.

compusat22 · July 22, 2023, 11:37am

Thanks for the info, but how is it I have another s905w (x96 mini) running 4.6 ng without an issue, is it to do with the monitor it’s connected to?

Also how do I easily put a pull request into a build, last time I manually edited the scripts before building as it was only 2 lines but this seems a lot more complex.

Again Thanks for info and solution, was looking at emuelec GitHub and the work you have done especially with regards resolution and setres has been outstanding, (maybe you would be a good candidate to fork this and manage it as it as it seems to be dead or at least on life support ATM not to knock the excellent work that the current owner has put in to get it this far)

Langerz82 · July 22, 2023, 11:51am

Not sure why your other one works fine, but yeah s905w cant change resolution easily with EE I think 4.5 (correction) onwards.

If you know how to build, here is the latest version that should have those changes in it.

Remember to switch to the branch after a clone with:

git checkout dev_4.6.1-TEST

edit:
Also here is a really long thread discussing the issue lol:

Topic		Replies	Views
Nokia 8000 (s905x3) version 4.6 Amlogic Devices	4	696	February 1, 2024
Weird screen flickering at the sides and unability to set the right resolution- Le Potato Amlogic Devices	1	490	March 15, 2023
CVBS profile help Amlogic Devices	5	62	October 1, 2024
X96mini & T95N (Mini m85 pro) AV output black screen Amlogic Devices	1	371	August 24, 2023
EmuELEC-ne is under development Amlogic Devices	7	204	January 28, 2025

T95 s1 issue with display

Related topics