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#1 2016-08-31 21:04:41

1Raio
Member
Registered: 2016-08-31
Posts: 4

[SOLVED] After installing arch laptop's screen does not work

Hi all. After a few tries I got it right and sucessfully instaled arch.
The problem is: when I select arch in the grub the screen flicks and the laptop's screen stops working, but an external monitor does.
The hardware is fine because Lubuntu is also instaled and it works properly* (more on that later).
I googled and the drivers are instaled (xf86-intelsomething), xorg is instaled (xinit, utils and server-utils) so I doubt it's the problem. I thought grub is somehow involved in this, but I edited /etc/default/grub (removing quiet splash or replacing it with "video=LVDS-1:d video=VGA-1:e consoleblank=0" as seeing in [1]) to no avail.
*It actually does not work properly. The default option for Lubuntu shows the same behavior as arch's, it works only when one of the advanced options for Ubuntu is selected. Tried editing grub.cfg and also didn't work.
My question is what is the simplest approach? Fix it and how do I do it, or reinstall arch (and probably Lubuntu)?
[1] http://askubuntu.com/questions/618705/i … ck-imb-150

Last edited by 1Raio (2016-09-27 17:53:23)

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#2 2016-08-31 21:27:15

2ManyDogs
Forum Fellow
Registered: 2012-01-15
Posts: 4,645

Re: [SOLVED] After installing arch laptop's screen does not work

Look at /boot/grub/grub.cfg. What is the difference between the Lubuntu entry that works and the one that does not?

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#3 2016-08-31 23:50:26

1Raio
Member
Registered: 2016-08-31
Posts: 4

Re: [SOLVED] After installing arch laptop's screen does not work

2ManyDogs wrote:

Look at /boot/grub/grub.cfg. What is the difference between the Lubuntu entry that works and the one that does not?

The difference is this /:

submenu 'Opções avançadas para Arch (em /dev/sda7)' $menuentry_id_option 'osprober-gnulinux-advanced-cc38cfa0-f3ed-4cbf-bfb7-96dbd5920c42' {
        ...
    }
}/

set timeout_style=menu
if [ "${timeout}" = 0 ]; then
  set timeout=10
fi
### END /etc/grub.d/30_os-prober ###

The working entry has it, the other one doesn't.

I edited de grub.cfg and added the /, but it made no difference.

Last edited by 1Raio (2016-09-03 14:36:26)

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#4 2016-09-26 16:54:43

1Raio
Member
Registered: 2016-08-31
Posts: 4

Re: [SOLVED] After installing arch laptop's screen does not work

The black screen problem has been solved by adding i915.modeset=0 in kernel options, disabling KMS, although I'm stuck with one resolution.

I've added the modules intel_agp and i915 in /etc/mkinitcpio.conf, with no kernel options in grub and running mkinitcpio -p linux, but did not solve the problem.

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