All Questions

447
votes
32answers
1.3m views

My computer boots to a black screen, what options do I have to fix it?

I am trying to boot Ubuntu on my computer. When I boot Ubuntu, it boots to a black screen. How can I fix this? Table of Contents: If you are trying to install Ubuntu If you have a dual boot ...
540
votes
12answers
1.7m views

How do I install Ubuntu alongside a pre-installed Windows with UEFI?

I'm absolutely new to Linux. I would like to know how to install Ubuntu alongside the pre-installed Windows 8+ OS. Should I do it with Wubi, or through the Live USB/DVD? What steps do I need to take ...
157
votes
2answers
165k views

How do I install Ubuntu?

I would like to see a full how-to guide on how to install Ubuntu.
312
votes
47answers
1.4m views

Installing Broadcom Wireless Drivers

I'm having serious problems installing the Broadcom drivers for Ubuntu. It worked perfectly on my previous version, but now, it is impossible. What are the steps to install Broadcom wireless drivers ...
183
votes
16answers
1.4m views

How to remove Ubuntu and put Windows back on?

I have absolutely no experience with Linux, and I desperately need to get my computer back up and running again with Windows. How do I remove Ubuntu and reinstall Windows?
517
votes
14answers
852k views

How do I resolve unmet dependencies after adding a PPA?

Occasionally, when I'm installing stuff, I get an error like the following: Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the ...
369
votes
9answers
464k views

How to install software or upgrade from an old unsupported release?

Recently I have installed an older version of Ubuntu on my old machine. Whenever I try to install any software, I get an error saying it couldn't be found: $ sudo apt-get install vlc Reading package ...
323
votes
11answers
627k views

How can I repair grub? (How to get Ubuntu back after installing Windows?)

I installed Windows 7, which ate Ubuntu's boot file. When starting up the computer, it now goes straight to Windows, without giving me the option of booting Ubuntu. How can I get Ubuntu back?
448
votes
7answers
56k views

How do I report a bug?

I found a problem with an application on Ubuntu. Questions : How do I best report the issue? What sort of information should I provide?
133
votes
8answers
86k views

How do I find out which version and derivative of Ubuntu is right for my hardware in terms of minimal system requirements?

For a given hardware configuration, how do I find out if Ubuntu will run on it? What considerations should I take into account when choosing an Ubuntu version and flavour such as: Xubuntu with a ...
607
votes
15answers
2.1m views

How do I reset a lost administrative password?

I'm working on a Ubuntu system, and my client has completely forgotten his administrative password. He doesn't even remember entering one; however it is there. I've tried the suggestions on the ...
541
votes
34answers
547k views

Unity doesn't load, no Launcher, no Dash appears

When I login, nothing happens. I am presented with my desktop wallpaper. No Dash, no Launcher, nothing.
248
votes
8answers
489k views

How can I fix a 404 Error when using a PPA or updating my package lists?

PPA seems to be constantly offline. Whenever I use sudo apt-get update, this error is shown: W: Failed to fetch http://ppa.launchpad.net/ 404 Not Found How do I fix these errors?
422
votes
41answers
818k views

Ubuntu gets stuck in a login loop

My Ubuntu is stuck in a login loop when trying to enter my desktop. When I login, the screen gets black and soon after that the login screen comes back. I've read that the problem might be caused by ...
106
votes
4answers
315k views

How to resize partitions?

Previously, I have installed Windows 7 on my 320 GB laptop with three partitions 173, 84 and 63 GB each. The 63 GB partition was where the Windows was installed. The rest were for file containers. ...
94
votes
3answers
242k views

My wireless/WiFi connection does not work. What information is needed to diagnose the issue?

Your situation You have successfully installed Ubuntu. You have just downloaded and booted Ubuntu live media. The latest LTS (see also HWE) or latest non-LTS release are preferred. See the list of ...
212
votes
6answers
1.1m views

How to use manual partitioning during installation?

I'd like to see the full How-To on how to use manual partitioning during Ubuntu installation. The existing guides (at least those I found here) cover only automatic part and leave untouched the manual ...
587
votes
45answers
561k views

What should I do when Ubuntu freezes?

All operating systems freeze sometimes, and Ubuntu is no exception. What should I do to regain control when... just one program stops responding? nothing at all responds to mouse clicks or key ...
311
votes
21answers
817k views

Unable to mount Windows (NTFS) filesystem due to hibernation

Whenever I boot Ubuntu, I get a message that it cannot mount my windows partition, and I can choose to either wait, skip or manually mount. When I try to enter my Windows partition through Nautilus I ...
53
votes
3answers
132k views

How do I recover my accidentally lost Windows partitions after installing Ubuntu?

I have a Toshiba satellite A-200 laptop with a Vista OS on it with 4 NTFS partitions (C:) Vista (D:) Entertainment (E:) Work (F:) Sources and I wanted to start using Ubuntu instead. So I tried it ...
127
votes
14answers
108k views

What hardware does Ubuntu Touch support?

With the announcement of the Ubuntu Phone OS I'd like to know what phone (and tablet) models are supported at this time. Note from foss & Oli: We are making this the master question for all ...
244
votes
24answers
387k views

How can I install software or packages without Internet (offline)?

I have a friend who has got a computer that is not connected to the Internet. Is there any way to install software offline easily?
919
votes
21answers
2.9m views

Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?

I get this error when trying to use apt-get: E: Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/) is ...
498
votes
10answers
602k views

What are PPAs and how do I use them?

I keep reading about Personal Package Archives ('PPAs') and people answer questions with a link to a PPA. What's the best way to use these? There are multiple valid answers for this question ...
175
votes
8answers
55k views

I have a hardware detection problem, what logs do I need to look into?

I am trying to ask a question about getting my hardware to work but I don't know what information to add to my question to get help, what do I need to do? Related if you don't have access to a GUI: ...
61
votes
9answers
170k views

How do I remove a malformed line from my sources.list?

I have unistalled and reinstalled the Ubuntu Software Center as per info I found in a similar thread and I got the same response about line 91 or something like that. I just tried to upload a screen ...
169
votes
21answers
197k views

How do I install Ubuntu to a USB key? (without using Startup Disk Creator)

If you are hurrying to reply, System → Administration → StartUp Disk Creator -- no, that's not what I'm talking about. I want to try Ubuntu 11.04's Unity without touching my existing Ubuntu install. ...
194
votes
14answers
610k views

How can I install Windows after I've installed Ubuntu?

I have Ubuntu on my laptop. Now I want install Windows 7 in a dual-boot. How can I do this? I can't lose my Ubuntu files, and I'm afraid that I might break GRUB.
108
votes
8answers
206k views

What are the system requirements for each flavour of Ubuntu Desktop?

I'm thinking about installing Ubuntu Desktop, but I don't know what flavor is the best for my system. What are the minimum and recommended hardware requirements? What kind of CPU? How much memory? ...
25
votes
17answers
68k views

Unable to boot into Windows after installing Ubuntu, how to fix?

I installed Windows on my computer, followed by an installation of Ubuntu. However, now I'm unable to boot into my Windows install. What can I do to fix this?
280
votes
42answers
858k views

How to fix “The system is running in low-graphics mode” error?

Note: This is an attempt to create a canonical question that covers all instances of "low-graphics mode" error that occurs to a user, including but not limited to installation of wrong ...
135
votes
13answers
176k views

How do I install the Nvidia drivers?

I just ordered the Nvidia GTX card. I have a dilemma, though. Should I keep using the driver which is available in "additional drivers" in Ubuntu, or should I install the driver from the Nvidia site? ...
537
votes
21answers
550k views

How do I free up more space in /boot?

My /boot partition is nearly full and I get a warning every time I reboot my system. I already deleted old kernel packages (linux-headers...), actually I did that to install a newer kernel version ...
414
votes
13answers
3.3m views

How do I install a .tar.gz (or .tar.bz2) file?

I have downloaded tar.gz files. But I don't know how to install it. How do I install this kind of file?
391
votes
12answers
985k views

How do I upgrade to a newer version of Ubuntu?

What are the different ways I can use to upgrade Ubuntu from one release to another?
143
votes
4answers
577k views

How do I enable the “Universe” repository?

How do I get to the Universe Repository in supported versions of Ubuntu?
118
votes
16answers
98k views

Can I skip over releases when upgrading?

I am currently using Ubuntu 10.04. I know there is a 10.10 release, but can I upgrade directly to 11.04? Could you walk me through the steps please?
418
votes
11answers
1.5m views

How can I create a Windows bootable USB stick using Ubuntu?

I'd like to create a Windows 8 bootable USB stick, but I don't have a Windows machine with me to do so. So how do I do it using Ubuntu?
89
votes
18answers
207k views

How can I install Windows software or games?

Can .exe and .msi files (Windows software) be installed in Ubuntu?
170
votes
16answers
176k views

Is a NVIDIA GeForce with Optimus Technology supported by Ubuntu?

I am considering buying a Dell XPS 15 laptop. The laptop has a Nvidia 420m card which should work with Linux but I keep reading that the Nvidia Optimus technology isn't supported on Linux. I am not ...
50
votes
7answers
153k views

How do I get a Realtek RTL8723BE wireless card to work?

I have installed Ubuntu 15.04 on my laptop with RTL8723BE Wi-fi card. But it is always disconnecting from network. I have tried echo "options rtl8723be fwlps=N ips=N" | sudo tee /etc/modprobe.d/...
163
votes
5answers
530k views

What is the correct way to install proprietary ATI Catalyst Video Drivers (fglrx) directly from AMD?

I am planning on doing a fresh install of Ubuntu and want to know what is the correct way to install ATI Catalyst Video Driver? There are multiple valid answers for this question spanning over ...
139
votes
17answers
154k views

What are the differences between 32-bit and 64-bit, and which should I choose?

What is the difference between 32-bit and 64-bit Ubuntu? I've heard the 64-bit platform performs better and can detect more than 4GB of RAM. Also, while some apps haven't ported to 64-bit yet, ia32-...
200
votes
14answers
78k views

How to customize the Ubuntu Live CD?

I would like to customize Ubuntu live CD by installing some additional packages. I have followed this but it doesn't seems to work. Can anyone provide clear instructions? Note: I do not prefer ...
673
votes
37answers
1.0m views

How do I remove old kernel versions to clean up the boot menu?

Every time I install a new Linux kernel, it gets left in the grub_config, making the boot menu longer each time. I know I can manually search through the installed packages and remove them. Does ...
66
votes
4answers
116k views

Why do I get “Required key not available” when install 3rd party kernel modules or after a kernel upgrade?

This issue happens only on UEFI systems with enabled Secure Boot. When I try to install DKMS modules like VirtualBox, Nvidia, or Broadcom drivers, they do not install and I get Required key not ...
322
votes
11answers
458k views

How do I fix the GPG error “NO_PUBKEY”?

I added some extra repositories with the Software Sources program. But when I reload the package database, I get an error like the following: W: GPG error: http://ppa.launchpad.net trusty InRelease:...
321
votes
14answers
544k views

How do I start applications automatically on login?

How can I make an application automatically start when I have logged in?
188
votes
7answers
563k views

Unable to correct problems, you have held broken packages

After upgrading from 10.04 to 12.04 I am trying to install different packages. For instance ia32-libs and skype (4.0). When trying to install these, I am getting the 'Unable to correct problems, you ...
26
votes
6answers
14k views

What is the proper way of creating installation media from Ubuntu iso?

This is the third time I've tried to install Ubuntu Server 14.04.03 64-bit on the same laptop, and each time it caused different problems. Each time I wrote the same iso image to a USB flash drive by ...

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