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avconv - Error for scale filter

I'm trying to rescale a video via avconv with the following command: /usr/bin/avconv -i /home/user/video.mp4 -filter:v crop=960:720:160:0,scale=h=498:w=-1 -an -y -frames:v 1 media/image.png But I'm ...
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How do I install GRUB as a boot loader when I currently use Mac OS X (Yosemite)

I currently have a Hackintosh running Mac OS X Yosemite. I'm in the process of updating it to El Capitan any day now. I have an empty drive slot that I'd like to install Ubuntu onto. I'd like to use ...
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5 views

Unable to load nvm commands via SSH [Ubuntu 14]

I know there are quite a few similar questions around, but I am still unable to get this to work. If I try to run nvm install node, all starts to work again. ubuntu@*:~$ node The program 'node' can ...
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1answer
16 views

Dual boot Windows 10 / Debian 8

I messed up my Ubuntu installation, which is in dual boot with Windows 10, and I'd like to overwrite it with Debian 8. Should I just format the Ubuntu's partition and run the Debian's installer? And ...
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2answers
31 views

Cannot connect to local SSH server - bad file number

I have an Odroid XU4 with Ubuntu 14.04 server on it. I installed the ssh server with apt-get install openssh-server. I got the local IP with hostname -I, which is 192.168.0.186, I generated a random ...
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1answer
11 views

No boot menu for backbox

I have windows 10 installed on my C: drive which has 202 gb space. When I got my laptop it was mentioned with UEFI. I have a partition of 700 gb for F: drive from which I extracted 20 GB for backbox ...
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1answer
28 views

Ubuntu only uses 768 MB instead of 1 GB ram

The specs of my laptop and BIOS say that I have 1 GB (1024MB) of ram. But when I use Ubuntu it says that I have only 768 MB. Is there a way to use all the ram that I have? I have Asus K53U laptop ...
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10 views

Keyboard key presses showing up out of order (Ubuntu 15.04, Microsoft SideWinder keyboard)

I've noticed this for a while, but only recently tried to troubleshoot. Using the MS SideWinder keyboard on Ubuntu 15.04, which has n-key rollover, if I type words quickly I find that intermittently ...
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1answer
13 views

Can't dual-boot Windows 7/Linux Mint (UEFI)

This post is going to be kind of long because I've done a lot of testing. Until proven otherwise, I'm going to assume this incredibly bizarre issue is caused by my computer being haunted. I'm also ...
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6 views

Can't connect to wifi in both Windows and Ubuntu (but USB tethering works)

I just bought an ASUS K31AD desktop PC. I have both Windows 10 and Ubuntu 15. I can connect with my phone's USB tethering but not with its Portable Wi-Fi. What can be the cause of this? I used to be ...
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7 views

Mdadm raid gone after reboot

Mdadm raid gone after reboot. Will gdisk work on 6TB HDD's? Will some describe how to use "parted" to write "fd00"? Rephrased better
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15 views

Play stream with VLC on Ubuntu 14.04

I have Ubuntu desktop 14.04 with two NIC, eth0 and eth1. One is just for internet and the other one is on local subnet where multicast UDP stream is coming. Default route is on eth0, and multicast ...
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11 views

Auto-unmount NTFS partition when hibernating Xubuntu

I use a dual-boot setup (Xubuntu & Windows). My Windows has Fastboot and Hibernation disabled and my main OS is Xubuntu which i hibernate almost every day. I always make sure no NTFS partition is ...
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32 views

Just Installed Virtualbox on Windows 10 host, Cannot Load Ubuntu

Just installed 4.3.12, build 9926. For reasons I won't go into right now (extensive), the newest builds of VBox crash immediately in Windows 10 Home Edition. Build 4.3.12 will actually start Vbox ...
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13 views

Web Server redirect to old IP address

I have EC 2 instance , configured has web server used wiki-media to create page, along with EC 2 I used RDS mysql database server. At first it works fine , but when I stop instance & start it it ...
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15 views

Home network ADSL Modem to Ubuntu Server to Wireless Router

I've got a D-Link DSL2544N in bridged mode connected to my Netgear R7000 wireless router, with an Ubuntu dev server hooked up to that through an ethernet port (I'd upgraded from the D-Link and didn't ...
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0answers
7 views

Installing Qubes v3 along with Ubuntu14 on external USB HDD, fails

I partitioned a 2 tb usb hdd to: /boot 1gb, /ext4 999gb, /unallocated 500gb, /fat32 500gb. I installed Ubuntu in ext4 partition without any problems and installed grub in the same partition. The disk ...
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9 views

Trying to install liveusb-creator onto ubuntu

i tried following this tutorial: https://ifireball.wordpress.com/2011/10/14/running-fedoras-liveusb-creator-on-ubuntu/ , but i got this error: Traceback (most recent call last): File ...
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35 views

Networking not working due to MAC address in VirtualBox Ubuntu guest?

I have an Ubuntu VirtualBox VM guest under a Windows 10 host. At home I can connect to my wireless network and see the internet if I use bridged adapter, but not NAT. With NAT Ubuntu says I'm ...
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0answers
27 views

Can't print from Windows 10,7 to Ubuntu cups HP Printer for the first 30 minutes, but can print from linux

I have an HP Deskjet 1510 printer (the actual shop advertised it as a 1515 model, the windows driver provided was for a 1510 though). I am sharing the printer through samba and cups to the network. ...
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2answers
40 views

Problems with multiple static network interfaces on Linux

I have created 2 static interfaces, eth0 and eth1. Here's how my /etc/network/interfaces file look like. # This file describes the network interfaces available on your system # and how to activate ...
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10 views

Screen goes black with mouse after unplugging second monitor Ubuntu Server 14.04 fglrx

I'm running Ubuntu Server 14.04 with fglrx and dwm installed. The machine has an AMD R7 260X with two monitors plugged in, one to the DisplayPort, the other through a DVI-VGA passive adapter to one ...
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2answers
21 views

Error while updating date time automatically on Ubuntu

I'm trying to update Ubuntu's date and time automatically, but I get an error for all time servers: asia.pool.ntp.org north-america.pool.ntp.org europe.pool.ntp.org Public Time Server (pool.ntp.org) ...
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18 views

Ubuntu postfix sendgrid unknown mail transport error

I have configured postfix similar to this one: "Recipient address rejected" when sending an email with sendgrid $ /etc/postfix/main.cf smtp_sasl_auth_enable = yes smtp_sasl_password_maps ...
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13 views

Motion daemon causes 100% cpu when stopped

I have setup the motion video detection system on Ubuntu 14.04 and want to start and stop it via cron so that it's not capturing pictures when the room is normally in use. It all works fine until I ...
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18 views

Disk encryption with separate /boot partition

I'm trying to setup an encrypted filesystem with a separate /boot partition and I'm having some troubles and there's no a complete and definite guide about this topic. I'll write down the procedure ...
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0answers
9 views

How do I wait for network manager in init.d

I'm getting a startup error with the nmbd service. It can't bind to a particular port. However, if I manually bounce the service after the computer comes up, it's fine. I'm running Ubuntu 15.10. That ...
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15 views

Memory heirarchies and kernel boot options

I'm booting a Ubuntu 14.04.3 LTS server on a Core-i5 T5200U machine with kernel boot options agp=off ipv6.disable=1 intremap=no_x2apic_optout biosdevname=0 audit=0. When I inspect dmesg, I see the ...
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0answers
28 views

Set up MediaWiki to host more than one wiki

I'm working on Ubuntu and have no experience in about PHP or Apache. Now I want to setup wiki-family. I looked to Manual:Wiki family. There are some steps to do that. I could do first 5 steps but 6th ...
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1answer
23 views

Automatically delete all files in folder that gets over 10GB?

I have a small server from DigitalOcean ($5/Month) and I only have about 16GB out of my 20GB on that server. I'll be hosting a site that will auto download some small files (3-6Mb) and eventually the ...
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1answer
23 views

Permissions setting for home folder [on hold]

What are the best practices in setting permission so that other user can't access my home folder? They should be able to login, ssh, compile programs etc.
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1answer
15 views

prerequirement for lvreduce to shrink a lvm disk

I am trying to shrink my Fedora 20 lvm partition/disk (only one partition) with lvreduce. I have done that for my VirtualBox but this time it is for a external USB disk. I have backup my disk already. ...
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2answers
74 views

How to properly empty a file

Ok, so I'm trying to empty a file. It's a text log file, which is being written continuously. My ls -lh says it's 3GB I run > file.log My ls -lh says it's still 3GB However the size of the ...
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1answer
31 views

get rid of Half-installed java installation on ubuntu

I installed java by downloading the RPM file from java.com (1.8.0-71) and used alien to generate a .deb file which i installed. It failed and I can't remove it anymore. If I try to use apt-get I ...
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0answers
20 views

Constant disconnection Ubuntu 14.04

I had a similar problem before, I tried many many distros before (debian,arch,fedora) and had the problem of constant disconnection and the authentication bug. It was persistent , which made me think ...
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1answer
36 views

VMware Workstation 12 Pro - Error updating VMware Tools on Ubuntu 14.10

Workstation 12 Pro - 12.1.0 build-3272444 Individual license Guest OS : Ubuntu 14.10 64-bit VMware Tools: 9.6.2.31837 (build-1688356) VM works fine except... Updating VMware Tools, download stage ...
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8 views

grub always hides menu and boots to Ubuntu 14.04; must press ESC

No matter what I change in /etc/default/grub or /boot/grub/menu.list, grub always hides the menu, shows a 10 second countdown timer, and then boots to default (Ubuntu 14.04). To access MacOs, I must ...
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6 views

LVM partitioned with 3 distros. Missing /sbin/init on some boot options

So I've installed Ubuntu with LVM and added Antegeros and Debian on seperate LVM partitions with them all sharing the same home. I can boot all of them if I select a particular Linux kernel version or ...
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12 views

How to Enable wifi Channel 12 on ubuntu laptop?

I need to enable on my laptop channel 12 to connect to a specific wireless network. That network is not mine so I must fix the problem on my laptop. I have dual boot (Windows/Linux) in Windows ...
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1answer
63 views

How to find vulnerabilities in ubuntu services? [on hold]

I have an ubuntu server running. Today I found that the server got hacked and is being used for DDoS through amazon abuse report. I found the following things on the server. The following suspecious ...
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0answers
12 views

Terminal lines intermittently invisible or corrupt on Ubuntu 12.04

I am running gnome-terminal under Ubuntu 12.04 and I have a weird problem that I haven't managed to find any info on. Whenever I type a command, the resulting output is frequently - but not always - ...
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0answers
12 views

What does this XML block for CPU do?

I'm having trouble getting a CPU configured. The problem CPU configuration is shown below. However, I have a good configuration and I am trying to understand what it does so I can add pieces of it to ...
0
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1answer
23 views

unable to enable ssh1

First, let me begin by saying that I am aware that SSH1 is totally inferior to SSH2. Now, having said that... I am trying to enable SSH1 and am unable to do so. In /etc/ssh/sshd_config there's this ...
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1answer
15 views

doubleboot uuntu/win10: GRUB not recognising the correct win10 partition

I have a windows10 ubuntu doubleboot on lenovo t450s thinkpad, and when the GRUB menu appears, I only have an option to load from Windows recovery partition, which upon selection, comes up with error ...
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29 views

creating Wiki family on Ubuntu desktop

I'm a new user of Ubuntu. Here you can see: This will allow you to install more than one wiki on a single server, using the same source code checkout. Also in Manual:FAQ you can see: It ...
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0answers
9 views

Netbeans looks ugly in Ubuntu GNOME

I have installed Ubuntu Gnome and Netbeans IDE, but the tabs are terribly bugged. What do I need to do to fix it, if there is how? I do not want to use Eclipse.
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21 views

Using Wine for only one game? How to avoid malware?

I would like to avoid being able to run Windows malware with Wine. I have Xubuntu 14.04 and when I install Wine it automatically associates filetypes .exe... etc with Wine so it is pretty easy to get ...
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0answers
16 views

Update Intel NUC boot on power setting from Ubuntu Server OS

I have an Intel NUC that is remote and currently booted, running Ubuntu Server. I neglected to set it to boot automatically after power failure when I had physical access. Is there any way to update ...
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0answers
25 views

Mobile phone which would support ANY Linux distribution [closed]

Do smartphones which would be able to run any Linux distribution exist? I am not talking about emulators, simulators or phones which just support Ubuntu Touch or some Android/Linux modification - I am ...
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0answers
8 views

Missing AESNI, RDRAND and RDSEED capabilities?

I've got a machine with a Core-i5 5200U. Its a 5th generation processor, so it has AESNI, RDRAND and RDSEED. Its the reason I bought the machine. The machine is running Ubuntu Server 14.04.03. Ubuntu ...