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#1 2013-06-15 16:19:42

infoslaw
Member
From: Poland, Warsaw
Registered: 2013-05-06
Posts: 154

[SOLVED] Blank screen during boot, missing video on tty console

I have black screen when booting from docking station where is DVI video output. On laptop itself and over VGA is OK.
Tried modify GRUB2:

GRUB_CMDLINE_LINUX_DEFAULT=“quiet”
for
GRUB_CMDLINE_LINUX_DEFAULT=“i915.modeset=1”

but still the same and can't get video after switch to tty (ctrl+alt+F1) as well

I compare with Debian where tty works fine

found in folder:  /etc/modprobe.d/i915-kms.conf
where is:
options i915 modeset=1

in Arch missing this file, any idea what to check?

Last edited by infoslaw (2016-06-24 13:12:41)

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#2 2013-06-15 16:32:41

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,414

Re: [SOLVED] Blank screen during boot, missing video on tty console

Comparing Arch Linux to Debian is not really a reasonable comparison at all in terms of "this works here but not there".  Arch Linux uses the latest stable everything, while Debian tends to be extremely conservative in their release of new software into the stable repos.  So for example with the i915 stuff, you are comparing kernel version 3.2 in Debian stable to Arch's kernel version 3.9.  You see the problem there? 

As far as your docking station goes, you really haven't given any real shred of information.  What kind of computer is it and what kind of docking station is it?  You say DVI comes out of the dock, but what about this VGA that you say works?  Have you tried using early KMS?  I see you use the modeset parameter, but did you add the module to your initramfs?

You need to provide (quite) a bit more information if you want any help here.

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#3 2013-06-15 17:04:31

infoslaw
Member
From: Poland, Warsaw
Registered: 2013-05-06
Posts: 154

Re: [SOLVED] Blank screen during boot, missing video on tty console

Thank you for quick replay. Yes I agree Debian is more conservative distro.

OK here is more info:

I don't have video during booting system and when switching to tty console (ctrl+alt+F1) on my Lenovo X200 docked in to ThinkPad X200 UltraBase where monitor is connected over DP-DVI computer lead.

Over VGA everything works fine. Also in laptop itself works fine.

What I tried to do is to add in

/etc/mkinitcpio.conf
MODULES="i915"

and to update

# mkinitcpio -p linux

I didn't tried to use early KMS, can you help me and tell how do that?
I really appreciate your help.

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#4 2013-06-15 18:16:48

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,414

Re: [SOLVED] Blank screen during boot, missing video on tty console

You are using early KMS if you put i915 into your initramfs and regenrated it.  From your first post, I know that VGA is working fine, but you didn't answer the question about whether this wokring VGA is out of your laptop or the dock.  Have you tried to do a basic search on Thinkpad's and docks with Linux? 

As a side note, the point of what i was saying about Debian vs Arch is not simply that it is more conservatve, but that because of it they are incredibly behind in software version across the board.  So saying that it works in Debian is of litle signifigance to what is happening with the software in Arch Linux.

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#5 2013-06-15 18:46:19

infoslaw
Member
From: Poland, Warsaw
Registered: 2013-05-06
Posts: 154

Re: [SOLVED] Blank screen during boot, missing video on tty console

@WonderWoofy
I follow all steps from link: http://carlosbecker.com/posts/how-to-en … archlinux/
and when doing
cat /sys/module/i915/parameters/modeset
I have return 1 (before was -1)

so KMS is enabled now?
but still no video on booting or tty console

VGA in docking station works fine and I can see booting process and switch to tty
I found this http://www.thinkwiki.org/wiki/ThinkPad_X200_UltraBase where regarding to displayport: you would need to add i915.modeset=1 to your boot command line

Last edited by infoslaw (2013-06-15 18:52:04)

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#6 2013-06-17 13:29:43

infoslaw
Member
From: Poland, Warsaw
Registered: 2013-05-06
Posts: 154

Re: [SOLVED] Blank screen during boot, missing video on tty console

I temporary resolved issue for changing video out for analog VGA connection.

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#7 2013-06-17 13:57:33

Mr.Elendig
#archlinux@freenode channel op
From: The intertubes
Registered: 2004-11-07
Posts: 4,092

Re: [SOLVED] Blank screen during boot, missing video on tty console

https://wiki.archlinux.org/index.php/In … modules.22

This says ati but can in some cases happen on intel with docking stations too:
https://wiki.archlinux.org/index.php/At … rks_in_KMS

The most likely problem is the former though. It tries to use both outputs, and the vga uses a much lower res than the dvi, and therefor your monitor goes black because it doesn't like the video mode.

Last edited by Mr.Elendig (2013-06-17 13:59:39)


Evil #archlinux@libera.chat channel op and general support dude.
. files on github, Screenshots, Random pics and the rest

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#8 2013-06-17 15:48:16

infoslaw
Member
From: Poland, Warsaw
Registered: 2013-05-06
Posts: 154

Re: [SOLVED] Blank screen during boot, missing video on tty console

Mr.Elendig wrote:

https://wiki.archlinux.org/index.php/In … modules.22

This says ati but can in some cases happen on intel with docking stations too:
https://wiki.archlinux.org/index.php/At … rks_in_KMS

The most likely problem is the former though. It tries to use both outputs, and the vga uses a much lower res than the dvi, and therefor your monitor goes black because it doesn't like the video mode.



Thank you for answer.

I modified Grub line for adding one more module parameters fbcon=map:1:
GRUB_CMDLINE_LINUX_DEFAULT="quiet acpi_osi=Linux fbcon=map:1"

and updated grub:
grub-mkconfig -o /boot/grub/grub.cfg

but now after showing Grub table with available systems just frozen video, still I'm able to typing from keyboard to push system forward (encryption password)

I reverse to previous settings.

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#9 2016-06-24 13:12:19

infoslaw
Member
From: Poland, Warsaw
Registered: 2013-05-06
Posts: 154

Re: [SOLVED] Blank screen during boot, missing video on tty console

This issue don't exist anymore with new hardware and highest version of kernel.

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#10 2016-06-24 15:54:42

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 19,739

Re: [SOLVED] Blank screen during boot, missing video on tty console

Mr. Elendig,

Did you mean to report, or reply?


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
---
How to Ask Questions the Smart Way

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#11 2016-06-24 16:01:38

Scimmia
Fellow
Registered: 2012-09-01
Posts: 11,461

Re: [SOLVED] Blank screen during boot, missing video on tty console

ewaller wrote:

Mr. Elendig,

Did you mean to report, or reply?

Looks like a report to me, just not a very clear one.

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#12 2016-06-24 16:19:37

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 19,739

Re: [SOLVED] Blank screen during boot, missing video on tty console

I suppose I should have opened the picture.  I generally don't. wink
Closing this three year old thread.


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
---
How to Ask Questions the Smart Way

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