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#1 2021-06-07 00:21:54

cmmps
Member
From: Portugal, Lisbon
Registered: 2012-04-26
Posts: 70

[Solved] Boot hangs after update: backlight:intel_backlight

Hi there. This is an emergency! My laptop that I use for work is now hanging on boot after update!
The laptop is a Toshiba Satellite Pro with an Intel Core i7 CPU.

After a system upgrade it doesn't boot any more. It hangs after this lines:

Created slice system-systemd\x2dbacklight.slice.
Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Finished Load/Save Screen Backlight Brightness of backlight:intel_backlight.

After this lines, the boot just hangs. I can't start the system.
This is my working laptop and I need it to start as soon as possible.
Please, any ideas?

Best regards,

Last edited by cmmps (2021-06-07 14:49:38)


Carlos Santos

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#2 2021-06-07 01:07:25

jasonwryan
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From: .nz
Registered: 2009-05-09
Posts: 29,353
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Re: [Solved] Boot hangs after update: backlight:intel_backlight

Please remove the "Urgent" from the thread title: https://wiki.archlinux.org/index.php/Co … ow_to_post

And your machine is booting fine, your GUI is not starting: read the journal for whatever it is.


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#3 2021-06-07 02:39:17

cmmps
Member
From: Portugal, Lisbon
Registered: 2012-04-26
Posts: 70

Re: [Solved] Boot hangs after update: backlight:intel_backlight

Hi. Sorry but I'm still in an emergency situation. Indeed I can switch to a tty. I saw some error with Samba so I disabled smbd and nmbd.
Still, if I run

systemctl restart sddm

I still see "A start job is running for Samba NMB Daemon" and it stalls here...
What else can I do?

Best regards,


Carlos Santos

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#4 2021-06-07 02:56:51

jasonwryan
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From: .nz
Registered: 2009-05-09
Posts: 29,353
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Re: [Solved] Boot hangs after update: backlight:intel_backlight

Work out what service is actually failing. What is SDDM supposed to log you into? What does the journal say for it? You know you can just kill the samba/nmb thing...


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#5 2021-06-07 03:49:10

cmmps
Member
From: Portugal, Lisbon
Registered: 2012-04-26
Posts: 70

Re: [Solved] Boot hangs after update: backlight:intel_backlight

Well... I can't start SDDM / UI
The output I have from "journalctl -r" is on the image you can see using the following link:

https://ibb.co/932hLRC


Carlos Santos

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#6 2021-06-07 04:18:29

jasonwryan
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From: .nz
Registered: 2009-05-09
Posts: 29,353
Website

Re: [Solved] Boot hangs after update: backlight:intel_backlight

It's just a display manager: you don't need it for anything other than bloat. Just disable it and try and start whatever DE you are running.

And don't post screenshots of text output, paste the actual text: https://wiki.archlinux.org/index.php/Li … in_clients


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#7 2021-06-07 14:44:30

ewaller
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From: Pasadena, CA
Registered: 2009-07-13
Posts: 17,779

Re: [Solved] Boot hangs after update: backlight:intel_backlight

You should also be able to change to a different console at this point.   Try pressing Ctrl-Alt-F3


Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
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#8 2021-06-07 14:50:59

cmmps
Member
From: Portugal, Lisbon
Registered: 2012-04-26
Posts: 70

Re: [Solved] Boot hangs after update: backlight:intel_backlight

It was the xorg.conf file that was causing the problem after the update. I fixed the config and now X is starting fine.
So the problem was X11 related.

Sorry for taking your time. Thank you for your help!


Carlos Santos

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