Hello,
Just trying to set up my RPi 4 for Plan 9. It boots into Plan 9 no problem, but
at a pretty low resolution with big black borders.
I'm using a 2560x1440 screen connected with HDMI, I run it at 60Hz with other
OS on the Rpi.
Could someone please suggest a cmdline.txt config for it? At the
Could try adding
hdmi_enable_4kp60=1
to cmdline.txt? see also
https://www.raspberrypi.com/documentation/computers/config_txt.html
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Delive
Thanks for the quick reply, I put in the hdmi_enable_4k line and no difference.
My cmdline.txt is:
console=0 user=glenda nobootprompt=local!/dev/sdM0/fs
hdmi_group=2
hdmi_mode=82
hdmi_enable_4kp60=1
hdmi_cvt=2560 1440 60 3 0 0 1
max_framebuffer_width=2560
max_framebuffer_height=1440
hdmi_pixel_fr
I had similar issues when I needed a rpi3 to be forced into running
720p into a video capture device.
These used to be handled in config.txt
It looks like they moved those setting into a legacy section;
https://www.raspberrypi.com/documentation/computers/legacy_config_txt.html#legacy-video-options
Thanks, I managed to corrupt my card, so I'm going to reformat and try it
again, I'll post config when (if) I get it to work.
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Delivery options: ht
This gives me a QHD display on my RPi 4, this is the whole config.txt
[pi4]
kernel=9pi4
arm_64bit=1
[pi3]
kernel=9pi3
arm_64bit=1
[all]
gpu_mem=16
core_freq=250
enable_uart=1
boot_delay=1
hdmi_group=2
hdmi_mode=87
hdmi_cvt=2560 1440 60 3 0 0 1
max_framebuffer_width=2560
max_framebuffer_height=14
