UBUNTU stuck at shutdown after connecting to external screen

I am in deep peril as I come to you. I am writing my thesis and all hell is loose. I have tried various solutions right from installing to everything online for over 20 days now. As a result, I cant remember the last time I had a proper shutdown. I shall explain my problem, the solutions I have tried and my dire need for a solution.


Connect PC to external monitor HP1955(do not know what happened). Work through the day. Shut down the system. Laptop monitor is well lit, and the system seems to be running. Thats it, Nothing works after that. It is stuck on it forever. Past 15 days I have NOT been able to shut down other than use hard shutdown power off button!

Attempts made

1) change grub data as given here

  • GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force apm=power_off" && apm power_off=1 in the modules file.

2) Changed the Additional drivers from open source to fglrx-proprietary, which is when the computer crashed majorly. Couldn't get it to boot at all. Used UBUNTU in command mode finally and took back up.

3) Reinstalled the system. Full disclosure: Installing Ubuntu 14.04 along side windows 8 was a three day ordeal, which resulted in it working and still had some issues like, the external monitor should not be connected while boot up else it will hang like mentioned at the top. I didn't bother about it as the system worked and I had other things to do.

  • Reinstalled without formatting /, keeping /home
  • Reinstalled with formatting /.\, keeping /home

Issue still persists. Cant shutdown peacefully at all.

4) nomodeset insertion at boot up by pressing e and typing nomodeset next to quiet splash.

5) sudo swapoff -a; No change because of this

6) There is one more thing about redis, but there is no way for me to find out if thats the problem and I am scared as hell being a noob, as I am not able to do anything once the system is stuck Sysreq doesn't work. Esc Doesn't work.

7) Reinstalling the ubunutu desktop and unity sudo apt-get install --reinstall ubuntu-desktop sudo apt-get install unity

8) sudo shutdown -h 0, doesn't work as well.

Somebody please help me. I dont know when my system will crash next. I need hard strong advice.

Further explanation of problem

I beleive it has everything to do with dual monitor VGA things. My system has a problem with external monitors always plugging into the VGA. I have never been able to start up with VGA connected. It was all working well until suddenly it started misbehaving and I tried several solutions, before giving up to reinstall and yet same problems.

When I try to remove the external monitor by switching it off from the display setting, it does not switch off. It still works like usual. That is usually my cue that I am not going to be able to shutdown properly.

My laptop details are:

Memory : 3.3 GiB Processor: AMD A6-4400M APU with Radeon(tm) HD Graphics × 2  Graphics : Gallium 0.4 on AMD ARUBA (DRM 2.43.0, LLVM 3.6.0) OS Type  : 64-bit Disk 137.8 GB Laptop : HP Pavillion g6 

Dual boot with windows 8, which I almost never use, but I have my data there.


Category: boot Time: 2016-07-28 Views: 2

Related post

  • Connect two external screens to notebook 2015-06-29

    I need to connect two external screens to my notebook. I know this has been discussed a couple of times before but although I did some research I am still not sure what my best option is. My graphic card is a GeForce GT 750M. My notebook as only one

  • CM Note 2 Stuck Rebooting After Enabling Simulate External Screen 2013-06-15

    My Verizon Galaxy Note 2 running a nightly from a couple weeks ago is stuck rebooting over and over after I enabled the option in the developer tools to simulate an external screen. I selected the bottom option that mentioned 1080p. It immediately we

  • Ubuntu (VM) showing two different workspace when connected to external screen 2014-04-08

    I'm new to ubuntu and have a very strange issue. I'm running ubuntu as a Hyper V machine from windows 8.1 and connecting through xRDP. When i'm at work, I use an external monitor. When i RDP to the machine without the external screen connected I get

  • Ubuntu 14.04 freezes after connecting HDMI 2016-01-07

    Just after connecting the HDMI cable, my screen freezes for about 20 seconds, after which it works normally. Doesn't happen when I plug out. The second monitor works fine, recognizes both mirrored and extended screen. Not the biggest tragedy, but qui

  • Internal pdf viewer after having connected an external screen 2014-05-12

    Last week i used texmaker and its internal viewer to see my thesis on an external screen. Now i have the external screen disconnected but everytime i re-run my .tex file to see my thesis in the internal viewer again, it appears on my icons but i can'

  • Ubuntu can't shutdown and the log-out screen just freezes 2015-01-15

    This is the question I already have an answer, but answering for others. I have been having a problem, whenever I try to shutdown, suspend or restart Ubuntu or Gnome 3, the shut-down screen just freezes, and it didn't shut down. The question is how t

  • ubuntu won't shutdown or freezes at splash screen 2015-09-30

    I am using ubuntu 14.04 64 bit. The problem I am facing is, I can not shutdown my machine. Every time I shutdown or reboot the computer (both from terminal and GUI) it get stuck at boot splash screen and stays there forever until I shut it down by pr

  • Lenovo W500 keyboards locks when connecting to external screen 2010-06-10

    I have a Lenovo W500, which has dual boot. When I boot into Windows 2008 R2 and connect to an external screen or projector, the keyboard locks. Sometimes it is just a few of the keys, sometimes keys start different programs. I do not have this proble

  • Ubuntu 15.04 HiDPi to Full HD external screen 2015-05-21

    I just got a Dell XPS 13 2015 and I installed Ubuntu 15.04. Everything is working fine with the exception of using an external display. The resolution on my laptop is 3200x1800, my external screen is 1920x1080. When I connect my laptop to my external

  • WIth the new iMac how do we connect an external screen? 2011-05-19

    For all that own or know this in the new version. Is the Thunderbolt output compatible with the Mini DisplayPort to VGA Adapter? If not, how do we connect our external monitor? If yes, with the 27" version there are two ports, can we connect 2 extern

  • Screens turn black after plugging in external screen (vga and hdmi) 2016-02-10

    I have a dell xp13 with the latest Kubuntu. I used to work fine when I plugged in my external screen or a projector (I give presentations all the time). Now all of a sudden (I think I might have been pressing a key when I plugged in the screen) both

  • Ubuntu stucks at shutdown screen 2013-07-05

    I have just installed e4rat (a program to make your boot time faster) and setted it up. Now the boot time is much faster, but when I want to shutdown or reboot my machine stucks at the shutdown-screen. What can I do to prevent the stuck on the bootsc

  • My MacBook Pro Retina freezes after connecting third external monitor 2015-10-06

    After installing MacOS X El Capitan I'm unable to use my computer with three external monitors, after I plug third one independent of port ordering computer freezes, everything was working for quite a long time on Yosemite, how can I fix this problem

  • Ubuntu stuck at wallpaper after login 2014-10-26

    Hi guys I got problem when I login on my main user, it gets stucked at wallpaper. But when I login on guest user or make new user It works fine. Is there anyway to fix this. I use ubuntu 14.04 and Toshiba Satellite c660. --------------Solutions------

  • Ubuntu 16.04 unable to connect to external hard drive 2016-07-28

    I am unable to open my external hard drive on my Ubuntu 16.04 system. I know its detected because when I run parted, it shows me this: I don't know what the problem is and how to solve it. Any help would be greatly appreciated. Thank You.

  • Mouse clicks appear in the wrong place, after connecting/disconnecting external monitor 2015-08-21

    OS X 10.9.5, Macbook Pro Retina. During the day, I go between using the laptop's display, and shutting the lid and plugging in a larger external display. When I do this, windows get shuffled around, but that's OK. The real problem is that mouse click

  • Ubuntu 12.04 freezes after login with 3 screens not mirrored. ATI Radeon HD 6870 2012-07-25

    I have 3 screens that runs on 1 ati radeon hd 6870. I tried to turn of mirror mode but it gave me the following errors: The selected configuration for displays could not be applied required virtual size does not fit available size: requested=(4800, 9

  • Ubuntu won't boot after successful installation (Black screen appears and nothing happens) 2013-07-12

    I recently installed Ubuntu 12.04 LTS (dual boot win 8) via live usb created using pendrive linux. I have a sony vaio multi-touch screen with nvidia geforce CUDA. You can check the specifications here : http://www.sony.co.uk/product/vaio-j-series/vpc

  • Ubuntu 13.04 crash after a while (Black Screen) 2013-06-01

    I have an Inspiron 7520. I got an AMD Radeon HD 7730m 2go with a Intel HD 4000 running on Open Source driver updated from X-edgers repository. I got also a I7 2.4ghz overclocking to 3.1ghz. The problem I experience today is that when I leave my compu

iOS development

Android development

Python development

JAVA development

Development language

PHP development

Ruby development


Front-end development


development tools

Open Platform

Javascript development

.NET development

cloud computing


Copyright (C) avrocks.com, All Rights Reserved.

processed in 0.772 (s). 13 q(s)