Questions tagged [14.04]

Fifth LTS (Long Term Support) release of Ubuntu, code-named "Trusty Tahr". Released on 17th April, 2014 and has reached its End Of Life (EOL) in April 2019. Questions specific to 14.04 are no longer supported here and supposed to be closed as off-topic.

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42
votes
4answers
143k views

Wifi problems with rtl8723be in Ubuntu 14.04

I have dual booted my Windows 8 laptop with Ubuntu 14.04. The wifi driver is Realtek rtl8723be. It didn't use to work but I updated the kernel to 3.18 and reinstalled the driver and that seemed to ...
19
votes
1answer
66k views

Qualcomm Atheros Device [168c:0042] (rev 30) Wi-Fi driver installation

I bought an Acer laptop and installed Ubuntu 14.04LTS but WiFi drivers are not available for it. So I am trying to install a windows driver using wifidocs/driver/ndiswrapper. On doing lspci -vvnn, it ...
86
votes
7answers
87k views

Last upgrade crashes network manager (no internet connection, no applet)

While upgrading today, something caused my wireless network manager to disappear. Not even connecting via wired connection. This error is being shown by files: **(nm-applet:2716): WARNING **: Could ...
1
vote
1answer
869 views

Ubuntu 14.04 is not booting normaly after a manual hard boot

I ran Ubuntu boot repair from a USB flash, and it results in the following log, I cant boot normally, or back up my data through live CD, as the primary hard disk is not booting correctly. I have not ...
53
votes
6answers
170k views

Add Fake Display when No Monitor is Plugged In

I have an Ubuntu 14.04 server that has no external monitor connected. I use NoMachine to remote control the machine. When I do so, the Unity/Gnome interface doesn't see any monitors connected, so I ...
79
votes
5answers
90k views

Wireless networking not working after resume in Ubuntu 14.04

[Update]: The same problem exists in Kubuntu and is solved in the same manner. [Solved]: By applying the following command nmcli nm I got the following: Before suspend RUNNING STATE ...
3
votes
1answer
4k views

Can not boot anymore after a boot repair

I upgraded from 12.04 to 14.04 on my Toshiba satellite z930. Ubuntu is the only OS on this computer (windows 8 was wiped right away). Everything went great, except that the following message appeared: ...
134
votes
3answers
339k views

How to disable IPv6 in Ubuntu 14.04?

I am using Ubuntu 14.04. And I have done the following to disable ipv6. I have open /etc/sysctl.conf using gedit and paste the following lines at the end of sysctl.conf. net.ipv6.conf.all....
31
votes
6answers
125k views

How to set up nVidia Optimus/Bumblebee in 14.04

The previous methods i have used to set up Bumblebee on 13.10 based distributions is not working under Ubuntu 14.04 . How can I set up Bumblebee and Bumblebee GUI in Ubuntu 14.04 ?
49
votes
9answers
154k views

Problems after upgrading to 14.04 (only background and pointer after login) [duplicate]

After upgrading from 12.04 to 14.04 I could log in to my X session (albeit with really low graphics). While trying to fix the graphics, I managed to break the X session. Now, after typing my password ...
6
votes
1answer
31k views

Bootable device not found after clean install of Ubuntu 14.04 UEFI on Acer

I have a single boot Acer laptop where I performed a clean installation of Ubuntu. After boot it shows a bootable device not found error. I tried running boot-repair and when it finishes it says ...
6
votes
3answers
3k views

How can I make Ubuntu 18.04 / 18.10 desktop use Unity (be like Ubuntu 14.04)?

I recently installed Ubuntu 18.04 and I'm not keen on the desktop environment. I want the desktop env. I used to have in Ubuntu 14.04. How can I get it? I've attempted to use this answer, but when I ...
31
votes
2answers
69k views

Ubuntu 14.04 not booting after error message. /tmp could not be mounted

I recently installed Ubuntu 14.04 using WUBI and after installation when it booted it showed an error: Serious errors were found while checking the disk drive for /. There were three options: ...
8
votes
1answer
19k views

Ubuntu 14.04 Wireless not working: no network interface. Atheros [168c:003e] device

I just installed Ubuntu 14.04.3 LTS after installing windows 10 in my new VN7-571G and the wireless is not working. It never had: even during the installation it was not recognized. I run a script to ...
30
votes
17answers
91k views

Cannot change backlight brightness Ubuntu 14.04

This morning I found that I cannot change the brightness of my Dell XPs 13 laptop's display anymore. I tried the following to change the brightness Use keyboard brightness keys Run the commands shown ...
4
votes
2answers
16k views

My wifi Qualcomm Atheros Device [168c:0041] (rev 20) doesn't show up and work in Ubuntu 14.04.3 on Lenovo flex 3 14

I am new on linux systems I have tried some of the relevant solutions, those I could follow up, But nothing yet.Please help me figuring this out. Wireless info START Report from: 24 Sep 2015 22:40 ...
43
votes
2answers
91k views

How do I upgrade from 14.04 LTS to 16.04.1 LTS?

So, today is July 21st and this page. gives me an option to download 16.04.1 LTS. However, attempting to upgrade gets me this message - $ sudo do-release-upgrade Checking for a new Ubuntu release No ...
8
votes
3answers
71k views

Change boot order using efibootmgr

I recently installed Ubuntu 14.04 (First time linux user) on my HP Envy and have been trying to get the dual boot to work. I've looked around and have tried running the boot repair (here are the ...
17
votes
1answer
39k views

Can't get my Canon LBP printer to run under Ubuntu 14.04

I downloaded Linux CAPT driver V2.60 from Canon and installed both .deb packages, which were listed under the 64bit folder with Ubuntu Software-Center. My Canon printer still won't be recognized. Is ...
74
votes
7answers
12k views

How to secure my laptop so that hacking by physical access is not possible?

I messed up my system earlier, I was greeted with a black screen, when booting in to Ubuntu. When I started up my laptop, I selected the recovery option from the grub menu, and chose fallback at root ...
3
votes
2answers
7k views

Auto mount a disk drive in ubuntu 14.04 LTS (Bookmark directory not found)

I'm using ubuntu 14.04 LTS. When I start my pc and click on any bookmark from the file manager it shows this error: Unable to find the requested file. Please check the spelling and try again. ...
235
votes
9answers
686k views

Screen Resolution Problem with Ubuntu 14.04 and VirtualBox

Environment: Lenovo T530 running Windows 7. Have installed Ubuntu 14.04 on a virtual machine using VM Virtual Box. Have installed all the updates from both Virtual Box and Ubuntu. Problem: While in ...
29
votes
2answers
81k views

ALERT! /dev/disk/by-uuid/xxxxxxxxx does not exist. Dropping to a shell

I am using Ubuntu 14.04. I ran in terminal sudo apt-get update. Then I rebooted the system. And now I see: ALERT! /dev/disk/by-uuid/xxxxxxxxx does not exist. Dropping to a shell initramfs:_ I can'...
150
votes
4answers
136k views

Ubuntu 14.04 LTS live USB boot error (gfxboot.c32:not a valid COM32R image)

I downloaded Ubuntu 14.04 (64 bit) lts. I made a bootable usb stick. But I keep receiving this error message upon booting: SYSLINUX 4.04 EDD 20110518 Copyright (C) 1994-2011 H. Peter Anvin et al ...
173
votes
4answers
158k views

apt-get stuck at 0 [Connecting to us.archive.ubuntu.com]

When I do upgrade it gets stuck here: user@plato:~# sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done ...
48
votes
4answers
189k views

Unity Launcher and Top Panel disappeared in 14.04

The top panel and Unity launcher have disappeared in Ubuntu 14.04. Also cannot access the terminal via Ctrl+Alt+T. I have tried every solution for this issue that I can find, from re-installing unity ...
14
votes
5answers
38k views

Ralink RT 3290 Bluetooth Problem on Ubuntu 14.04

I recently installed Ubuntu 14.04 and everything is working good except the Bluetooth. I have Ralink 3290 Bluetooth. tried to install the driver using the method described here. The code is not ...
38
votes
3answers
54k views

Which commands to convert a Ubuntu BIOS install to EFI/UEFI without boot-repair on single boot hardware?

Accidental BIOS mode install I have Intel 64-bit hardware with UEFI setup utility. Ubuntu 14.04.1 LTS was installed as the only operating system on the only drive attached. Accidentally Ubuntu was ...
24
votes
10answers
130k views

ubuntu 14.04 login loop problem

My Ubuntu 14.04 is stuck when trying to login my desktop. The screen goes black and soon after that the login screen comes back. I followed all steps in Ubuntu gets stuck in a login loop but the ...
30
votes
4answers
39k views

14.04 - Network manager stopped working

When I started my laptop, there was no network service, and also no network icon in the top bar. It gives an error when I start OS like "Sorry, Ubuntu 14.04 experienced an internal error". When I ...
14
votes
5answers
37k views

No sound from laptop speakers in Ubuntu 14.04 after booting into Windows 8.1

I have a Dell Inspiron 15 7537. I had installed 14.04 on it, and had no problems with the sound initially. However, like my with ethernet card, it seemed expecting to not have driver/software issues ...
85
votes
2answers
135k views

N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' as it has an invalid filename extension

Yesterday I upgraded distro and today when I am using apt-get to install anything or to update, I get an error: N: Ignoring file '50unattended-upgrades.ucf-dist' in directory '/etc/apt/apt.conf.d/' ...
7
votes
1answer
16k views

Dual-Boot Ubuntu 14.04 and Windows 7 on FakeRAID Installation error - question marks “????…”

I am trying to install Ubuntu 14.04 on FakeRAID along Win7. Win 7 has been already installed, and dmraid is running. During the installation I choose to manually partition, this is the structure: \...
8
votes
7answers
14k views

Capacity of pen drive shown is less than the actual

I have a 8 GB pendrive. I used to write raw data into the pendrive (without creating filesystem) using the dd command. Today, when I inserted the pen drive, the I am unable to write anything on to ...
8
votes
1answer
8k views

How to remove duplicate entries in dash?

After upgrading to Ubuntu 14.04 from 12.04 I have duplicate entries in dash. How can I get rid of them?
1
vote
3answers
7k views

Dual boot but only Windows boots

So I just made a fresh install of Windows 8.1 and then Ubuntu 14.04.1. The problem is, that I can't make GRUB as the main boot option, it is not listed in BIOS so my computer just loads into Windows. ...
141
votes
5answers
941k views

How to enable ssh root access on Ubuntu 14.04

I´d like to enable the ssh root access on Ubuntu 14.04. Editing the /etc/ssh_config (PermitRootLogin yes) didn't affect anything.
32
votes
6answers
82k views

How do I keep my Wifi from dropping out?

I have a System76 Gazelle, gapz8, running Ubuntu 14.04. My wifi keeps dropping out at random intervals. I have a new router, so I don't believe that's the issue, but I am in an apartment building, so ...
36
votes
4answers
54k views

Keyboard and mouse unresponsive after suspend

I have a Toshiba Satellite S55-A5154 with 14.04 installed. Every time it resumes from being suspended, neither the keyboard nor mouse work. What can I do to fix this or provide you with more info?
45
votes
8answers
295k views

What's the good way to clean up the system (and is Bleachbit safe) on Ubuntu 14.04?

I used Ubuntu 14.04 (Trusty Tahr) for about a year (actually upgraded it from Ubuntu 12.04 (Precise Pangolin)), and during the time I installed some packages, and removed some other packages....
15
votes
1answer
57k views

Lubuntu nm-applet wifi icon missing [duplicate]

I have a Lubuntu (now 14.04) installation. Recently, I logged in to find that the Wi-Fi icon had disappeared, and there was some sort of a keyboard icon in it's place. I have restarted multiple times, ...
16
votes
1answer
163k views

How to resolve “Segmentation fault (core dumped)”

I am using Ubuntu 14.04. After installing some applications I faced a segmentation fault (core dumped) error. What does it mean ? How can I resolve this issue ? For example: After installing ...
9
votes
3answers
60k views

Driver for Canon LBP 2900

How do I install the driver for Canon LBP 2900 printer in Ubuntu 14.04? I have tried installing drivers from the official CANON support and checked other answers on Ask Ubuntu but so far no results.
3
votes
1answer
8k views

Wifi not working (Intel) on HP Spectre x360 13

I've been trying to follow around to fix my wifi problems, however I don't know how to find out my actual wifi device name. The problem is that on Ubuntu (14.04) there seems to be no indication that ...
11
votes
1answer
38k views

How to install nVidia drivers with Bumblebee on Ubuntu 14.04

As the title, how can I correctly setup nvidia-optimus technology on Ubuntu?
3
votes
5answers
18k views

How to get Bamboo Pad working on Ubuntu 14.04

I'm trying to get Bamboo Pad working on Ubuntu 14.04 I am sure that device is not broken = I can see it via lsusb All "howtogetyourwacomtabletworking" guides are designed for older versions of Ubuntu ...
11
votes
0answers
182k views

Installing WinUSB on Ubuntu 14.04 [duplicate]

I am unable to install WinUSB in Ubuntu 14.04 using command: sudo apt-get install winusb What is the correct way to install WinUSB in Ubuntu 14.04? Or is there any other application available to ...
133
votes
5answers
324k views

How to enable exFAT in Ubuntu 14.04

I just installed Ubuntu 14.04 and I can't mount my exFAT HDD. I get the following error: Unable to access “SeagateHDD” Error mounting /dev/sdb1 at /media/me/SeagateHDD: Command-line `mount -t "exfat"...
15
votes
1answer
10k views

What command is executed when shutdown from the graphical menu in 14.04?

I understand that clicking "shut down" from the menu that comes up on clicking the cogwheel triggers the following command to be executed: dbus-send --system --print-reply --dest=org.freedesktop.Hal /...
41
votes
5answers
149k views

How I can disable CPU frequency scaling and set the system to performance?

My processor is running at 40% of its maximum speed, I want it to use 100% of the speed, all the time. I searched on Google but the tutorials are very old and they all differ. So, how can I ...

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