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#1 2013-12-09 08:27:12

XeroXer
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From: Sweden
Registered: 2007-01-13
Posts: 9
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[Solved] Laptop monitor not working after upgrade to 3.12.3-1

This friday I upgraded my linux- and linux-headers- packages from 3.12.2-1 to 3.12.3-1.
I did't reboot until yesterday and that's when I noticed I had a bit of a problem, my laptop monitor will not work.
After listing the disks and when it usually comes to the login, the monitor stays black.
If I connect an external monitor when booting that monitor is used instead, and that one works great.
Since the laptop monitor works during boot I can only guess that it's not a monitor issue.

My laptop is an Asus Zenbook UX32VD with a GeForce GT 620M (Nvidia Optimus) and I am using nouveau.

Today I tried downgrading to 3.12.2-1 and reboot but that didn't solve the problem.
Does anyone know why this would happen and any way to fix it?

Last edited by XeroXer (2013-12-11 06:26:25)

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#2 2013-12-09 20:33:03

ondoho
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Registered: 2013-04-30
Posts: 692
Website

Re: [Solved] Laptop monitor not working after upgrade to 3.12.3-1

as a workaround, install arandr, activate whichever monitors you want, store the results in a shellscript (really just an xrandr oneliner) and execute that on login.
(if that wouldn't work i'd guess you're in more serious trouble)
there's ways to make this the default settings when you start X, please search the wiki for that, or the forums.
hope this helps.

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#3 2013-12-09 20:33:45

steffinger
Member
From: Munich/Beijing
Registered: 2011-02-07
Posts: 41

Re: [Solved] Laptop monitor not working after upgrade to 3.12.3-1

Hi,

I had problems with mesa and the latest kernel updates combined. When I downgraded both (and especially the package intel-tdd today!!) I got rid of my graphic glitches. But i think that won't help in your case. Don't you see anything in the logs?  # journalctl | grep error    is your friend in dark times.

So this can have multiple reasons, including mesa problems. But with the Info you provide it's hard to help.

Greetings

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#4 2013-12-09 21:45:27

XeroXer
Member
From: Sweden
Registered: 2007-01-13
Posts: 9
Website

Re: [Solved] Laptop monitor not working after upgrade to 3.12.3-1

ondoho wrote:

as a workaround, install arandr, activate whichever monitors you want, store the results in a shellscript (really just an xrandr oneliner) and execute that on login.
(if that wouldn't work i'd guess you're in more serious trouble)
there's ways to make this the default settings when you start X, please search the wiki for that, or the forums.
hope this helps.

I have been using arand for this for the past months and never had a problem, running it now and setting the resolution will not work.
If I set the resolution for the laptop monitor, hibernate the computer and then start it up again, the whole computer freezes, no commands work.
So I guess I am in more serious trouble sad


steffinger wrote:

Hi,

I had problems with mesa and the latest kernel updates combined. When I downgraded both (and especially the package intel-tdd today!!) I got rid of my graphic glitches. But i think that won't help in your case. Don't you see anything in the logs?  # journalctl | grep error    is your friend in dark times.

So this can have multiple reasons, including mesa problems. But with the Info you provide it's hard to help.

Greetings

Will have to try to also downgrade mesa and see if that changes anything.
There are no errors from the journalctl command and the Xorg log looks the same for both a failed boot and a working boot.
That's really the problem, don't even know where to start looking for the problems.

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#5 2013-12-11 06:28:30

XeroXer
Member
From: Sweden
Registered: 2007-01-13
Posts: 9
Website

Re: [Solved] Laptop monitor not working after upgrade to 3.12.3-1

Well sometimes it's the easiest answer that is the correct one.
Somehow after the upgrade my monitor gamma/backlight gets 0 as a value.
This has never been a problem before and I will try to find a way to get it to work as it should again.
Lucky for me the brightness buttons on the laptop worked and I could get the monitor bright enough to log in and fix the issue.

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