Bad fullscreen with BasiliskII and 2.8" screen

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EliteOrbital
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Posts: 1
Joined: Mon Oct 03, 2022 7:55 pm

Bad fullscreen with BasiliskII and 2.8" screen

Post by EliteOrbital »

Hello, i have a problem with my raspberry pi compute module 4. I have this screen https://www.waveshare.com/wiki/2.8inch_DPI_LCD

it is configured on Raspi OS Bullseyes 32bit with this config.txt from this thread viewtopic.php?t=327135
Code: Select all

Code: Select all

dtoverlay=vc4-kms-dpi-generic
dtparam=hactive=480,hfp=26,hsync=16,hbp=10
dtparam=vactive=640,vfp=25,vsync=10,vbp=15
dtparam=clock-frequency=32000000
dtparam=hsync-invert,vsync-invert,pixclk-invert
dtparam=rgb666-padhi
All is perfect but when i full screen an app like DOSBOX or BasilliskII the screen is shifted down like this picture :
https://forums.raspberrypi.com/download ... p?id=56921

I already tested the overscan but it doesn't matter because KMS is activated I believe

i have compiled the kanjitalk755 version of BasiliskII with this options

Code: Select all

./configure --enable-sdl-video --enable-sdl-audio --disable-vosf --disable-jit-compiler --with-gtk
Can anyone help me please? I don't know if it's a BasiliskII problem or a Raspi OS problem
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adespoton
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Re: Bad fullscreen with BasiliskII and 2.8" screen

Post by adespoton »

EliteOrbital wrote: Mon Oct 03, 2022 8:00 pm Hello, i have a problem with my raspberry pi compute module 4. I have this screen https://www.waveshare.com/wiki/2.8inch_DPI_LCD

it is configured on Raspi OS Bullseyes 32bit with this config.txt from this thread viewtopic.php?t=327135
Code: Select all

Code: Select all

dtoverlay=vc4-kms-dpi-generic
dtparam=hactive=480,hfp=26,hsync=16,hbp=10
dtparam=vactive=640,vfp=25,vsync=10,vbp=15
dtparam=clock-frequency=32000000
dtparam=hsync-invert,vsync-invert,pixclk-invert
dtparam=rgb666-padhi
All is perfect but when i full screen an app like DOSBOX or BasilliskII the screen is shifted down like this picture :
https://forums.raspberrypi.com/download ... p?id=56921

I already tested the overscan but it doesn't matter because KMS is activated I believe

i have compiled the kanjitalk755 version of BasiliskII with this options

Code: Select all

./configure --enable-sdl-video --enable-sdl-audio --disable-vosf --disable-jit-compiler --with-gtk
Can anyone help me please? I don't know if it's a BasiliskII problem or a Raspi OS problem
I don't think I can fix your issue, but the "When I full screen an app like DOSBOX" points to this not being an issue with BII.

However, both DOSBOX and BII use SDL2 on Raspi OS, I believe... so your issue is likely an interaction between SDL2 and padhi.
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