Questions related to restarting Ubuntu machines.

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Crazy boot and reboot times after upgrading to ubuntu 15.04

After upgrade to 15.04 my ubuntu loads really slowly, slower than Windows 8 on the same machine, which insults me. I turned off splash screen, and when I boot the system I get this: A start job is ...
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1answer
34 views

I want to forbid guest to push reboot

Every user or everyone it Guest Session can reboot computer. I want that Only root can reboot or power off computer. And about button of power off. Button must to be disabled. What I must do?
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1answer
34 views

ubuntu login from winwows 8.1

I have dual booted Ubuntu 14.04 with Windows 8.1. I restarted the pc with command shutdown -r now in Ubuntu Terminal. The PC restarted but now I can only access Windows and can't login to Ubuntu. ...
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0answers
58 views

Cannot shutdown or reboot after upgrading from 14.10 to 15.04 on Intel NUC

I have been running ubuntu 14.04, then 14.10 on my Intel NUC model DN2820FYKH for months without any issues. I recently reformatted and reinstalled a fresh copy of 15.04, and after doing so I am now ...
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0answers
16 views

Boot twice before entering Ubuntu

This is the third times I re-install Ubuntu 14.04 LTS but the loop cannot be disappeared. Sometimes, I must reboot third times. It really pissed me off. I'm going to describe my situation. When I ...
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1answer
45 views

How to force reboot of Ubuntu phone?

To me at happened that Ubuntu phone went black, background light stayed on but it didn't react to any input. How can I force reboot just with the hardware keys alone?
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2answers
32 views

WHERE to add more IPv6 addresses

I have a script to add many new IPv6 addresses on reboot and that code is in /etc/rc.local. The problem with this is that service processes (such as DNS server and web server) get started before the ...
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1answer
51 views

Booting from Live USB while Ubuntu 15.04 is already installed on the HD, makes next boot not find ad an ny OS

I had 15.04 already installed on my machine, and wanted to see something on a clean installation via a Live USB. So I restarted and booted from my USB and played around on a clean installation. ...
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1answer
25 views

operating system not found after installion from cd

I have succefully installed ubuntu 14.04 on sony vaio. After i click reboot now, it reboots and then says no operating system found! i tried to insert again the cd it enters and says try ubuntu or ...
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0answers
188 views

14.10 to 15.04 upgrade, now I can't poweroff or reboot!

I was previously running 14.10 without any problems on an Intel NUC Bay trail but then after upgrading it to 15.04 my PC won't poweroff or reboot anymore. At the shutdown messages it says umounting ...
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1answer
29 views

ifdown in cron bash script fails to run

I have a script that is run when a server (Ubuntu 14.04) boots up using @reboot in crontab (Under the root user) @reboot /bin/bash /root/init.sh >> /var/logs/vminit.log The script runs a ...
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10answers
3k views

Maximum time for which a Linux PC can be UP? [closed]

Actually I had a linux system ( running Ubuntu 12.04.3 ) for days without reboot. I ran in to some errors like sleep getting hang and some network mounted file system not getting mount even able to ...
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0answers
27 views

init 6 shuts down vs. rebooting when using bash script

I have a standard script I use to reboot a server after a successful backup. It is called using "nohup [scriptname] &" from another script that cleans up after a successful backup. The code:sync ...
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1answer
54 views

Ubuntu freeze on logout

I've just installed Ubuntu 15.04 and I'm experiencing a trouble when I try to logout. I think this is a recurrent problem with Ubuntu since I already experienced this same problem with release 14.10 ...
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1answer
859 views

Ubuntu 15.04 after reboot lost Ethernet connection

I've installed Ubuntu 15.04 and after a reboot I lose my Ethernet connection. After I've disable and re-enabled my connection Ethernet works fine, until I reboot again. This has been going on ever ...
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2answers
62 views

What harm can a cold reboot cause into your computer? [closed]

I was taking a look at the game DEFCON, and it froze my PC. Unfortunately, I only discovered the REISUB thing after a cold reboot. Now, what harm the cold reboot caused into my computer? Any type of ...
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0answers
64 views

How to restart Nvidia CUDA driver without rebooting?

When a CUDA process terminates due to errors, sometimes the device context are not released properly (due to driver bugs), since the Nvidia CUDA driver supports limited number of context instances ...
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0answers
21 views

14.04 unresponsive when running a stress test

When I run mprime (the linux version of prime95) there is no control of the mouse, the clock is not updated, the system monitor is not updated, and mprime cannot be terminated (since the keyboard is ...
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0answers
9 views

How to tell which application wants a reboot [duplicate]

Sometimes after installing software or whatnot, I find that I have to reboot my machine, either because I get the Software Updater telling me about it with its little annoying popup messages, or I ...
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0answers
22 views

Cannot scan after plugging USB scanner into running system, reboot required

I am using an Epson Photo Perfection scanner with Ubuntu 14.04 LTS. I have installed the Linux drivers successfully but I still have the following annoying problem. I cannot use the scanner when ...
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0answers
24 views

How can i enable user to have reboot privileges without sudo? [duplicate]

How can i enable user to have reboot privileges without sudo? Need to keep sudo password enabled. ssh user@server "sudo reboot" does not work because it requires a password to be entered. Want ...
0
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1answer
86 views

Ubuntu doesn't reboot / shutdown properly

root@pcu:~# uname -a Linux pcu 3.16.0-33-generic #44~14.04.1-Ubuntu SMP Fri Mar 13 10:33:29 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux After any shutdown command (shutdown, halt, poweroff, init, GUI ...
0
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1answer
14 views

Shortcuts missing everytime I reboot pc (target on anouther partition) [duplicate]

Well, I'm new to linux. And I have 2 partitions - one where I have linux installed, and second where I hold my files. I created 2 shortcuts on my desktop, but everytime, when I reboot my pc, they are ...
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1answer
18 views

Desktop Settings deleted after update

I have installed Ubuntu 14.10 Multiple Times and after the Software Update the Desktop Customizations are deleted I did a fresh install and About 70 Programs were updates following a reboot. After ...
0
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1answer
32 views

My laptop not showing dual boot [duplicate]

Im using dell vostro 3546. Just before i was install successfully ubuntu. Before it has windows8.1. Now i did restart my laptop and doesnt showing dual boot and it showing only ubuntu. I donot know ...
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0answers
64 views

Ubuntu 14.10 doesn't shutdown on my Dell 15R 7520!

I installed Ubuntu 14.10 using usb installer on my laptop. The only issue with it is it won't shutdown or reboot at all. The system shows few messages and tries to kill all the processes but fails and ...
2
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1answer
41 views

Restart and resume applications like in OSX

In OSX there is this restart and resume feature, that makes every window of every application (that supports this feature) resume after a system reboot, even unsaved new documents, mails, images etc. ...
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0answers
21 views

Machine rebooting when running process in screen/tmux

For the past couple of days, I've been running some CPU and memory intensive processes on a remote machine running Ubuntu 14.04. Here is the interesting bit: when I run a process on a regular SSH ...
0
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1answer
42 views

Ubuntu Server is resetting folder permissions for .ssh on reboot

Every time I power cycle the machine the .ssh folder permissions are reset and become too open for ssh. I need to physically go to the machine and chmod 0700 ~/.ssh before I can ssh in (otherwise ...
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0answers
12 views

Start mySQL with AppArmor on reboot

When my Ubuntu server (hosted by Rackspace) is rebooted/restarted, mySQL starts automatically as evidenced by phpMyAdmin working properly. However, my PHP code does not appear to work. When I manually ...
0
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3answers
218 views

PC does not boot into Windows, but Ubuntu still works well; how to recover?

I installed 7 operating systems in my PC. All worked very well. (Ubuntu 11, Ubuntu 14, EduBoss, Redhat6, Nodezero, Windows 8, Win 7). I frequently used Windows 8 and Ubuntu 14 last 6-7 months, I enjoy ...
0
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1answer
35 views

Why so many Reboots

I have a site that has 3 servers running Ubuntu 14.04.2. In the last couple of weeks I have had several updates that require a system reboot. I ran a system running unix that went years without a ...
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1answer
193 views

Ubuntu 14.04.2 with kernel version 3.13.0-46-generic fails to shutdown

When I execute shutdown and restart from the top panel or sudo shutdown -h/ sudo shutdown -r, everything goes fine until the last line "Will halt now", then it hangs, I've had to hold the power button ...
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0answers
55 views

white screen on new install 14.04 reboot

I have a problem with Ubuntu 14.04 on a Toshiba Satellite laptop C55-B5201 I had 1st installed Ubuntu 14.04 and it ran OK but after an upgrade in early February, it began to have a white screen with ...
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1answer
127 views

Ubuntu 14.04 won't shut down, reboots instead

I've researched on this topic and did all of the recommendations such as editing kernel options acpi=off, acpi=noirq, acpi=force, then sudo update-grub. i also edit the bios to disable wake on lan ...
0
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1answer
85 views

Ubuntu 14.04 with Gnome 3 experiencing random reboots

I'm not sure how to diagnose Ubuntu problems, as I've only been a user for a few days from Windows 8.1 I've never had any random reboot issues with Windows, so I am quite confident that it's not a ...
1
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1answer
29 views

Is umount performed automatically during a reboot?

Let's say I have a USB device mounted. When issuing a system restart using the command line utility "reboot", will the system automatically umount my USB device? Also, typically, if any shell is up ...
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0answers
26 views

(System manufacturer P5K SE) suspend/resume failure (Ubuntu 14.04)

After the PC went to suspend it doesn't start from the last state. Just does a reboot. I can suppose that I could wrong configure Asus motherboard but can't find out which one.
0
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0answers
154 views

Ubuntu 14.04 hangs on shutdown or reboot on Dell XPS M1330 laptop

I'm trying to fix the same type of problem reported in Ubuntu 14.04 hangs on shutdown / reboot D630 but for a Dell XPS M1330 laptop that has Ubuntu 14.10 Desktop installed on it. Reboot or shutdown ...
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0answers
140 views

Switching between nvidia prop. and nouveau with reboot

There is a very similar question to this one but mind the difference: in this question I am ok with reboots between driver swaps. How can I easily switch between the nvidia prop. driver and nouveau, ...
0
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1answer
274 views

Open VPN connection doesnt work after reboot Ubuntu 14.04

First I like to thank anyone who is giving these great answer here ! Im a new Ubuntu user and still on learning curve. After 8 years of OSX it is been harder than I expected. Two weeks ago I installed ...
2
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1answer
149 views

Bridge interface does not get IP address after reboot

I'm using Ubuntu 14.04.1 LTS. I'm using kvm and added a bridge interface to be able to connect from VM to outside internet. These are the steps I followed to do that. ifconfig eth0 0.0.0.0 brctl ...
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1answer
158 views

Ubuntu 14.04 Rebooting Not Working

When ever I reboot Ubuntu (not shutdown but reboot), my computer hangs. It hangs before grub even comes in to go to Ubuntu. I then have to manually do a hard shutdown and power it back on and it boots ...
0
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1answer
64 views

Touch screen not working after some reboots (another reboot resolves it)

I am trying to troubleshoot an issue on a Lenovo Flex 14 with Ubuntu 14.04.1 (standard Unity flavour) with touchscreen. Mostly it works perfectly well; but from time to time I reboot (mostly ...
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0answers
163 views

Strange behavior of Ubuntu 14.10

I've installed Ubuntu 14.10 (not upgraded) and got some troubles. First, it lags (12.04 didn't) sometimes. Second, when I reboot or shutdown the laptop, Ubuntu doesn't do it. Instead, there's a ...
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1answer
184 views

Ubuntu 14.04 often Hang/freeze on Splash Screen on boot or restart

just fresh install on new notebook ASUS X453M it's often to hang on boot or restart ubuntu, its only respond to force shutdown button i must forceshutdown and boot many times to can login to ...
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3answers
107 views

how to get Ubuntu 14.10 to boot up

down loaded Ubuntu 14.10 for AMD 64. New pc. burnt iso image to dvd. installed on clean drive ok. Passwords worked fine. auto downloaded updates. installed ok. Restart did not work.my machine shut ...
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2answers
73 views

How to automatically reboot after running a command

I'm installing updates on a bunch of machines, and I simply want to run: sudo apt-get update sudo apt-get upgrade sudo reboot all at once on all machines (after hours of course) and let them run ...
0
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1answer
109 views

Ubuntu goes black after upgrading (using VirtualBox)

I am running Ubuntu 14.04 within Oracle VirtualBox 4.3. I saw a notification to upgrade some package which I couldn't remember, to be honest. After upgrading process, I was asked to reboot, then ...
0
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1answer
28 views

New To Ubuntu; Have Reboot issues after Updates

I am new to Linux. I wiped my ASUS laptop and installed Ubuntu. I tried to search for my issue, but I hadn't come across what I needed. Things work well and I am enjoying using Linux. However, when I ...