Mageia forum

Hi all,

I just installed MGA 7.1 on a Dell Inspiron mini laptop (2012 ??). The installation works fine, but when I reboot, the system stops at:

Code: Select all

Starting Load/Save Screen Backlight Brightness of Leds:dell::kbd_backlight..

I have found a solution with mint, which is to install an old version and then upgrade to the new one.

Is there any solution for this in Mageia?
I would not like to change distro, so I ask.

I would appreciate any help

And you didn't add some customisations yet?

That is probably due the specifics of your hardware and how the driver for the keyboard is implemented. For the options see e.g. https://www.kernel.org/doc/Documentatio ... ell-laptop
I'd say that init script hasn't been adapted to systemd or it's running into some sort of race condition during shutdown.

Can you please show the output as root from

Code: Select all

ls -alR /sys/class/leds/dell::kbd_backlight
systemctl --all|grep -iE "dell|backlight"
journalctl -ab-1|grep -iE "dell|backlight"

If it's something like previous issues (e.g. https://forum.archlabslinux.com/t/solve ... error/2015 or https://ubuntuforums.org/showthread.php?t=2394672 ) you might be able to workaround it with

Code: Select all

systemctl mask systemd-backlight@leds\:dell\:\:kbd_backlight.service

Because there's no setting to prevent it from storing the backlight state during shutdown, only to prevent restore the state during boot - see man systemd-backlight@.service

HI doctor5000,

And you didn't add some customisations yet?

No, I can't load the system.

I have mounted the partitions with usb recovery

Code: Select all

ls -alR /sys/class/leds/dell::kbd_backlight
/mnt/sys/class/leds/del::kbd_backlight -> ../../devices/platform/dell-laptop/leds/dell::kbd_backlight/


The other 2 commands are for a running system; I don't think there is much point in running them from the rescue.

Thanks

Ahh, so this is during boot, I thought you meant that it stops during the reboot (so during shutdown after install).
Does the system boot in failsafe mode, or does it also hang?

You can try if the kernel boot option helps:

Code: Select all

systemd.restore_state=0

Have a look at https://wiki.mageia.org/en/How_to_set_u ... t_Loader_2 on how to do that.

If that doesn't help, you can try to move away the systemd unit from your USB recovery, it should be located at
/mnt/usr/lib/systemd/system/systemd-backlight@.service (if the / filesystem is mounted below /mnt)
Also from the USB recovery, check if you have this file, if so just remove it:
/mnt/var/lib/systemd/backlight/platform-dell-laptop:leds:dell::kbd_backlight

Although I can't tell you where the instantiated one would be stored, or if that's generated during boot.

Hi, Doctor5000,

Ahh, so this is during boot, I thought you meant that it stops during the reboot (so during shutdown after install)

that's right.
When I started in normal mode this would come out and not continue:

rw,noatime

When I booted into rescue mode it came out:

...kbd_backlight

booting into rescue mode with the command worked and loaded the desktop.
I did a reboot and it worked without putting the option in the grub, I also did the updates and there were no problems.
I am going to reinstall the system and see if it works. I made several changes before this and I want to see if they were not necessary.

Thanks for the help, I am really grateful

scanray wrote:booting into rescue mode with the command worked and loaded the desktop.
I did a reboot and it worked without putting the option in the grub, I also did the updates and there were no problems.
I am going to reinstall the system and see if it works. I made several changes before this and I want to see if they were not necessary.

So if I understood correctly, you only had to use systemd.restore_state=0
as grub boot option once, and you did nothing else and the subsequent reboots were working normally ?

Yes, it is correct, but I will clarify the steps for you.

1) I reinstalled everything and booted with the option in the grub. In rescue mode, in normal it does not work.
2) I made the updates and rebooted. It didn't work.
3) I activated the tainted and made some updates. rebooted
4) booted normal, without putting anything in the grub

At the moment it is working, a little slow but it works. I'm going to check the installed drivers well because it is faster in win7, well, that's another topic.

Thanks for the help

PD:I did everything 2 times. The first time I did the updates when it finished installing. It didn't start. The tainted may have updated something that was not in the other repositories.