Re: [PATCH] installer: suppress kernel warning/info/debug messages

["'Florian Bezdeka' via isar-users" <isar-users@googlegroups.com>]

On Fri, 2025-12-19 at 09:36 -0500, 'Badrikesh Prusty' via isar-users
wrote:
> Lower the kernel log level to 3 to suppress warning, notice, info,
> and debug messages on the console.
> This prevents audit and driver messages from cluttering the screen
> while keeping critical errors and systemd service status output
> visible, resulting in a cleaner installer UI.

Hiding warnings is not a good idea. If something is wrong on the target
the user should know. It will not be the first time that a problem is
hidden (and comes back in "urgent mode") just because someone decided to
suppress warnings.

> 
> Signed-off-by: Badrikesh Prusty <badrikesh.prusty@siemens.com>
> ---
>  meta-isar/recipes-core/images/isar-image-installer.bb | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/meta-isar/recipes-core/images/isar-image-installer.bb b/meta-isar/recipes-core/images/isar-image-installer.bb
> index 3511f3f6..fde81a19 100644
> --- a/meta-isar/recipes-core/images/isar-image-installer.bb
> +++ b/meta-isar/recipes-core/images/isar-image-installer.bb
> @@ -11,7 +11,8 @@ DESCRIPTION = "Example of a ISAR based Installer Image"
>  INSTALLER_WKS_FILE ??= "installer-efi.wks.in"
>  WKS_FILE = "${INSTALLER_WKS_FILE}"
>  
> -ADDITIONAL_KERNEL_CMDLINE ??= ""
> +# Hide kernel warning/info/debug messages
> +ADDITIONAL_KERNEL_CMDLINE ??= "loglevel=3"
>  
>  OVERRIDES .= "${@':unattended-installer' if bb.utils.to_boolean(d.getVar('INSTALLER_UNATTENDED')) else ''}"
>  ADDITIONAL_KERNEL_CMDLINE:append:unattended-installer = " \
> -- 
> 2.47.3
> 
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