A13-OlinuXino disagling debug onUART1

[Davide]

Hi!

I am trying to disable kernel messages over UART1 (ttyS0).

What I tried so far:
- removed env variables for 'console' and 'loglevel' and put on 'uEnv.txt' `console=tty1 loglevel=0`
- got rid off the `[uart_para]` section, the one with the debug settings, from 'script.bin'
- uncommented `kernel.printk = 3 4 1 3' from '/etc/sysctl.conf'
- tried to add 'boot.scr' with 'console' and 'loglevel' as above (before I wasn't using any 'boot.scr')

The output from '/proc/cmdline', `console=tty1 loglevel=0 root=/dev/mmcblk0p2 rootwait panic=10`, shows the correct values and I actually see printings on my display. However, messages are sent over ttyS0 too.

The image I am using is "A13_debian_34_90_WIFI_RALINK_GCC_GPIO_X_I2C_100KHz_UVC_TS_FTDI_3G_video_accell_release_10", taken from https://ftp.olimex.com/Allwinner_Images/A13-OLinuXino/2.legacy_images_kernel_3.4.x

Thanks to anyone who will answer!

[LubOlimex]

You might need to rebuild the u-boot. Check the instructions and files here:

https://github.com/OLIMEX/OLINUXINO/tree/master/SOFTWARE/A13/A13-build

Also check this forum post:

https://www.olimex.com/forum/index.php?topic=1788.0

[Davide]

In the end I moved to A13-OLinuXino-bullseye-minimal-20250305-103314 image and was able to achieve what I needed.

Many thanks for your help. As soon as possible, I will try your solution and update the topic