[9fans] 9legacy Raspberry Pi HDMI video questions

[9fans] 9legacy Raspberry Pi HDMI video questions

[slash 9fans]

Dear 9fans, 

I am booting my Raspberry Pi 4B off the 9legacy SD card image (http://www.9legacy.org/download.html) and it boots fine with the default config.txt, but there is a 48-pixel wide black border on the screen. 

term% echo `{ dd -if /dev/screen -bs 64 -count 1}
0+1 records in
0+1 records out
r5g6b5 0 0 1824 984

The Pi is connected to a standard 1080p 60Hz monitor via HDMI. How can I get rid of the black border i.e. expand the screen size to 1920x1080? If anyone has accomplished this, could you share your config.txt? Also, how can I enable 24bit colors? Thank you. 

/


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Re: [9fans] 9legacy Raspberry Pi HDMI video questions

[slash 9fans]

I was able to remove the black border by appending the following lines to config.txt:

hdmi_group=2
hdmi_mode=82
hdmi_cvt=1920 1080 60 3 0 0 1
framebuffer_width=1920
framebuffer_height=1080
max_framebuffer_width=1920
max_framebuffer_height=1080

The lesson I learned was that the Pi needs to be physically powered off after making changes to the config file. ctrl-t ctrl-t r is not sufficient.

/


> On 5. Apr 2024, at 16.33, slash 9fans <slash.9fans@gmail.com> wrote:
> 
> Dear 9fans,
> 
> I am booting my Raspberry Pi 4B off the 9legacy SD card image (http://www.9legacy.org/download.html) and it boots fine with the default config.txt, but there is a 48-pixel wide black border on the screen.
> 
> term% echo `{ dd -if /dev/screen -bs 64 -count 1}
> 0+1 records in
> 0+1 records out
> r5g6b5 0 0 1824 984
> 
> The Pi is connected to a standard 1080p 60Hz monitor via HDMI. How can I get rid of the black border i.e. expand the screen size to 1920x1080? If anyone has accomplished this, could you share your config.txt? Also, how can I enable 24bit colors? Thank you.
> 
> /
> 

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