Samsung Laptop support module doesn't load

[David Johnston]

This is identical to bug # 1170885, which was filed 2013-04-20. The last comment on that bug was by Kai-Heng Feng (kaihengfeng), who requested a new bug report.

This is a Samsung laptop NP730QCJ.

$ sudo modprobe samsung-laptop
modprobe: ERROR: could not insert 'samsung_laptop': No such device

About my system:
$ sudo dmidecode | grep -A 2 -i 'base board'
Base Board Information
 Manufacturer: SAMSUNG ELECTRONICS CO., LTD.
 Product Name: NP730QCJ-K01US

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.2 LTS"

$ cat /proc/version_signature
Ubuntu 5.8.0-59.66~20.04.1-generic 5.8.18

$ file /sys/firmware/efi/
/sys/firmware/efi/: directory

[Alex Hung (alexhung)]

Please run "sudo modprobe samsung-laptop force". The "force" parameter will disable DMI check.

If you can load samsung-laptop this way, we can try to add your DMI information to this driver.

[David Johnston (david-littlebald)]

Alex,
Does https://bugs.launchpad.net/ubuntu-cdimage/+bug/1040557 still apply? I’m running under UEFI, not BIOS, and I don’t want to brick this machine.

Sent from my iPhone

> On Jul 19, 2021, at 3:30 AM, Alex Hung <email address hidden> wrote:
>
> Please run "sudo modprobe samsung-laptop

[Alex Hung (alexhung)]

The below patch is still in place so samsung-laptop will not work on EFI.

commit e0094244e41c4d0c7ad69920681972fc45d8ce34
Author: Matt Fleming <email address hidden>
Date: Thu Jan 3 09:02:37 2013 +0000

    samsung-laptop: Disable on EFI hardware

This is also before the DMI quirks, ex.

        if (efi_enabled(EFI_BOOT))
                return -ENODEV;

        quirks = &samsung_unknown;
        if (!force && !dmi_check_system(samsung_dmi_table))
                return -ENODEV;

I am not aware of any updates on Samsung vs. Linux with EFI. It is really up to Samsung to make sure their BIOS doesn't get corrupted, so I guess this bug is a "won't fix".