[PATCH] installer: suppress kernel info/debug messages

[Badrikesh Prusty]

Lower the kernel log level to 4 to suppress 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.

Signed-off-by: Badrikesh Prusty <badrikes...@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..a58f8849 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=4"

OVERRIDES .= "${@':unattended-installer' if bb.utils.to_boolean(d.getVar('INSTALLER_UNATTENDED')) else ''}"
ADDITIONAL_KERNEL_CMDLINE:append:unattended-installer = " \
--
2.47.3

[Anton Mikanovich]

Applied to next, thanks.

[Florian Bezdeka]

On Mon, 2026-01-05 at 11:24 +0200, Anton Mikanovich wrote:
> Applied to next, thanks.

Why? There was a v2 on the list already. Hiding warnings is not a good
idea.

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[Badrikesh Prusty]

Hi Florian,

As per your previous suggestion, the warning messages are no longer hidden.

This has already been addressed by changing the log level from loglevel=3 to

loglevel=4 in v2 of the patch. With loglevel=4, warning messages are displayed,

and only info and debug messages are skipped.

Thanks,

Badrikesh

[Anton Mikanovich]

Hello Florian,

You are commenting it in v2 thread already.
Correct version was merged.
Badrikesh didn't add new version tag, so it creates some confusion.

[Florian Bezdeka]

On Mon, 2026-01-05 at 16:16 +0100, 'Florian Bezdeka' via isar-users
wrote:

> On Mon, 2026-01-05 at 11:24 +0200, Anton Mikanovich wrote:
> > Applied to next, thanks.
>
> Why? There was a v2 on the list already. Hiding warnings is not a good
> idea.

Ignore that. v2 was merged but was never tagged as v2. This is where the
confusion starts.

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