46
votes
0answers
2k views

How do I enable Ubuntu (using full disk encryption) to call LUKSsupend before sleeping/suspending to RAM?

This question is related to another one by @Stefan, but it is not a duplicate of it. The questions are slightly different: the author simply wanted to know if this had been implemented, while I'm ...
15
votes
0answers
305 views

How to lock ubuntu device orientation in portrait or landscape from user input?

I am working on a reader app to be used on Ubuntu-Touch. When reading books from the app it would be a helpful feature to lock the orientation in either portrait or landscape. This would be useful ...
8
votes
0answers
235 views

USB sticks not accessible & system hangs at shut-down: related older hardware?

Please notice the two updates at the end of the post. Original problem I installed Lubuntu 14.04.1 on an older Acer Travelmate 4500 using the forcepae option and adjusting upowerd.py according to ...
7
votes
0answers
559 views

Dropbox 3.0.3 ignoring local themes / missing notification icon

After upgrading from xubuntu 13.10 to 14.04, I found that dropbox needed re-installation on my system, amongst a slew of other problems. I performed the following as suggested here: sudo rm -rf ...
7
votes
0answers
845 views

Ubuntu Gnome 14.10 - desktop performance degraded when certain apps are running

I have upgraded from Ubuntu Gnome 14.04 to 14.10 yesterday using standard Software Updater GUI. The upgrade went smooth, however once upgrade was done I've noticed significant desktop performance ...
7
votes
0answers
297 views

Howto create a new C++ based Ubuntu touch project in Ubuntu SDK?

There is no option to start a C++ and QML based project in Ubuntu SDK. It only offers to create a QML project with no C++ codes. If I try to add C++ classes to the QML project, I get this error: ...
7
votes
0answers
2k views

problem Kernel panic - not syncing: fatal exception in interrupt drm_kms_helper:

I'm having a problem with my Dell Inspiron 1564, I am getting this error: problem Kernel panic - not syncing: fatal exception in interrupt drm_kms_helper:: panic occurred, switching back to text ...
7
votes
0answers
428 views

Custom paper size = Processing - Not Connected?

I am trying to print a custom paper size of 105.00 inches x 23.39 inches (the GLDT for my office :D). Whenever I try a custom paper size, the job sits in the queue with the message Processing - Not ...
6
votes
0answers
106 views

Backup LVM snapshots and Grub2 problem

Long story short, I'm using obnam to take backups of my system. This is what I do: take LVM snapshot of /, /usr, /boot, /var, /home mount the snapshots on /bck-snapshots, /bck-snapshots/usr, ...
6
votes
0answers
1k views

OpenVPN: The VPN connection to … because of invalid VPN secrets

I am 3 days into using Linux. I set up an OpenVPN connection following the instructions set out by: https://www.goldenfrog.com/support/vyprvpn/vpn-setup/linux/openvpn OpenVPN installation went ...
6
votes
0answers
53 views

High-level library for Unity Dash?

I've wanted to write a GTK+ version of Unity Dash for some time. I think it could be useful for Xfce, Gnome Flashback, elementaryOS, etc. Before I start doing anything about it, I'd like to know if ...
6
votes
0answers
1k views

Ubuntu 12.04 Unity: Black screen with cursor only, when external display is connected before booting laptop

Whenever I connect an external display to the DSub port of my laptop before booting into Ubuntu, something goes wrong in Unity to cause the exact same problem as described here: After logging in, ...
6
votes
0answers
394 views

Empathy Chat: People Nearby text chat OK but file transfer fails. Why? How to troubleshoot?

Problem: Chat works (sending text and smileys) with the "People Nearby" feature but sending files silently fails. Going to Contact > Send File presents the sender with a file chooser and no error is ...
6
votes
0answers
113 views

How to stop reordering of the same kind multiple preview windows in task switching?

When using task switching in the default graphical mode of Ubuntu 12.04, if they are multiple windows of the same kind, eg. multiple Terminal windows, you can see them all together and select which ...
6
votes
0answers
2k views

Tata Docomo Photon 3g not working on 12.04 LTS

I recently upgraded from Tata Photon+ to Tata Docomo Photon 3G, however Ubuntu is not recognizing the device itself. I tried manually adding the device in Mobile Broadband section, using different ...
6
votes
0answers
534 views

Wacom Bamboo Pen & Touch CTH-470 3+ finger gestures

I love my CTH-470 and I'm glad it's without having to spend hours in the terminal to get it working since I believe 12.10 (which I'm running now). But in the manual it states that you can swipe with ...
5
votes
0answers
79 views

How to change index in OptionSelector immediately (without animation)?

In my app, I use an OptionSelector to choose from a list of bike stations. I also have a map component with placemarkers for each station. When I tap a placemarker, it also changes the OptionSelector ...
5
votes
0answers
185 views

How to install a second graphics card and use 4 monitors?

I finally decided to take the plunge and ditch windows. After several hours I got things working perfectly with all my apps installed. Only problem is that I run 4 desktop displays off 2 nvidia ...
5
votes
0answers
113 views

Can't change brightness after disconnecting second monitor

When I boot up with 2 monitors, or when I connect the second monitor to my laptop, I can change brightness of the laptop screen in the usual sense. After disconnecting the second monitor, when I ...
5
votes
0answers
92 views

Launchpad: CLI “Copying packages”

I'm using Launchpad to upload a .dsc, a debian.tar.gz and a .orig.tar.xz. The orig archive contains both i386 and amd64 files, and I use debian/rules to build different architecture packages. But it ...
5
votes
0answers
753 views

Which recent tablet/notebook convertible PCs run Ubuntu 14.04 LTS flawlessly?

I’m an Ubuntu newbie, and I’m interested in acquiring a tablet/notebook convertible PC that will run Ubuntu 14.04 LTS without lots of hardware incompatibility and driver tweaking hassles. In ...
5
votes
0answers
4k views

Xlib: extension “GLX” missing on display “:0”. and OpenGL GLX extension not supported by display ':0'

I am trying to use OpenGL on my Ubuntu 12.04 LTS. I installed OpenGL with the following commands: sudo apt-get install g++ cmake sudo apt-get install freeglut3 freeglut3-dev sudo apt-get install ...
5
votes
0answers
146 views

xsetwacom can't map keys correctly

I recently bought a Wacom Intuos listed with xsetwacom as Wacom Intuos PT M. I figured out how to configure the buttons and actions, but when I try to set any button to some particular letters, they ...
5
votes
0answers
398 views

Opentype features in Libreoffice

Is it possible to use Opentype's features like ligatures in Libreoffice? if yes, how? Because as far as I know, in Ubuntu and Linux in general, these features are available only for graphite(aka ...
5
votes
0answers
646 views

How can I find the memory usage on my GPU?

Previously I was checking the memory usage on my GPU with the following command: nvidia-settings -q all | grep Memory I am processing some scientific data on my GPU with numpy and theano. I was ...
5
votes
0answers
52 views

How can I change the time zone of bandwidthd?

Is there any way to change the UTC offset for the graphs generated by bandwidthd?
5
votes
0answers
841 views

How can one get sound louder for a laptop that comes with Dolby Home Theater?

Is there anyway to get sound louder if you fail to enable the Dolby Home Theater on Ubuntu? The laptop in question is a Z580 Lenovo. It had good sound under Windows, but in Ubuntu the sound is ...
4
votes
0answers
785 views

Upgraded to Ubuntu 14.10 and *everything* lags

Yesterday, I upgraded my Lenovo Thinkpad X1 Carbon (2013) from Ubuntu 14.04 to Ubuntu 14.10. Since then, everything lags, from applications when opened (or 'drawn back in the background' for an ...
4
votes
0answers
78 views

What component is responsible for tray and how to manipulate it using C++?

My goal is to write a desktop gui application that will utilize these commands found in http://askubuntu.com/a/14083/18330 pacmd list-sinks to list name or index number of possible sinks pacmd ...
4
votes
0answers
54 views

Why opening apps in Ubuntu Touch takes so long?

Why in current ubuntu touch images, the apps take so long to open? When I click on some app, the phone show the icon of the app selected and the "icon of loading". This is a bug, or is this how it ...
4
votes
0answers
281 views

Why does hd-idle need sudo to run in rc.local?

I have added a command that runs "hd-idle". It seems to need to run as root as otherwise it does not spin down the drives as instructed. Behavior seems to be the same when executed manually or via ...
4
votes
0answers
415 views

How to start/configure pulseaudio remotely with ssh?

I have a remote machine to which I can ssh. On the remote machine there is a program that uses pulse audio to get input from a USB microphone attached to the remote machine. This setup works fine when ...
4
votes
0answers
235 views

Fonts messed up after installing Kubuntu desktop on Ubuntu 14.04

I decided I wanted to try Kubuntu since I had some difficulties with the Unity desktop. I do not remember exactly the command(s) I run, but I think I used sudo apt-get install kubuntu-desktop. Now the ...
4
votes
0answers
650 views

Gave Up Waiting For Root Device - Fresh Install 14.04

I am getting the error: Gave up waiting for root device. Common problems: - Boot args (cat /proc/cmdline) - Check rootdelay= (did the system wait long enough?) - Check root= (did the system ...
4
votes
0answers
98 views

Can I make the Gnome 3 overlay show the current wallpaper rather than the wallpaper on login?

I'm using Gnome 3 (GNOME Shell 3.10.4) and I have a script that changes the wallpaper using gsettings set org.gnome.desktop.background picture-uri <file>. This works just fine with regards to ...
4
votes
0answers
710 views

How to check if my Wine prefix is 32 bit or 64 bit?

I saw tons of threads explaining how to create a 32 bit prefix, but I want to check if the prefix I'm using is 32 bit or 64 bit. The reason I'm asking is that I'm using PlayOnLinux, and I've created a ...
4
votes
0answers
119 views

How to remap keys on one keyboard only?

I know I can use xinput to remap mouse buttons only on one mouse but leave others unchanged. This is very useful - in my case, I use it two connect to mice to my desktop, one right-handed and the ...
4
votes
0answers
2k views

Ubuntu 14.04 system hangs after installing pam module for ldap client with intel_rapl: no valid rapl domains found in package 0

I am running VMWare Workstation 10.0.2 on a Windows 8.1 host. I installed Ubuntu Server 14.04 as a virtual machine. Everything works fine. All updates, upgrades and dist-upgrades are installed. After ...
4
votes
0answers
204 views

Xubuntu Restarts Automatically after Shutdown

I recently installed Xubuntu 14.04 on a Dell Workstation. Whenever I shutdown, two things happen. Either it shuts down and automatically restarts, or it hangs at shutdown with a black screen. ...
4
votes
0answers
210 views

Cannot change Wifi settings, stuck on WEP Security

I just started using Linux and as such do not have a proper knowledge of how to use the command line and all of those sorts of things, so please try to bear with me :). I have been able to connect to ...
4
votes
0answers
62 views

Multiline R commands disappear in command line

I generally use R from the command line. However, this problem has been annoying me. When I use the up arrow to get a previous command, if that command was multiple lines, then R only shows the last ...
4
votes
0answers
425 views

Is Bluez (bluetoothd) not sending DBUS method_call SelectConfiguration upon Connection? If so, how do I catch it?

UPDATE : not solved yet, but part of a solution. See below. I am attempting to connect my iPod or other smart device to my laptop (Kubuntu 13.10) via bluetooth and stream a2dp-encoded music to a ...
4
votes
0answers
690 views

How to Enable Multi-Touch screen on Dell Vostro 5470?

I bought the new Dell Vostro 5470 with touch screen that supports multitouch (to 10 fingers). I installed Ubuntu 13.10 and it worked just touch the screen with one finger. Would enable multitouch but ...
4
votes
0answers
154 views

About the calendar on the top bar

So Ubuntu has this calendar on the top bar(Unity). Now whenever I open it and click on a day, it gets highlighted with bright orange color. If I close it now and open it again after like 1 or 2 days, ...
4
votes
0answers
2k views

Canon LBP3100B Printer => CAPT driver is installed => when I try to start ccpd, I get this: `Check the DevicePath of /etc/ccpd.conf`

OS: Ubuntu 13.10 64 bit Driver: CAPT v2.60 -> debian package 64 bit Printer: LBP3100B Regarding to this "Answer", I've installed the canon CAPT driver on my machin, but when I try to ...
4
votes
0answers
639 views

clang++ (version 3.3) lacks headers

This seems odd. Take a simple C++ program #include <cmath> #include <iostream> int main(void) { std::cout << "Square root of 9 is " << sqrt(9) << std::endl; } ...
4
votes
0answers
2k views

Integration multiple internet connections ISPUnity vs Ubuntu Bonding

I have Ubuntu 13.04 with 2 ethernet cards and a WiFi card. I also have 3 ISP connections. I have to configure linux to use all 3 connections. My main concern is to increase outgoing bandwidth (FTP ...
4
votes
0answers
355 views

Confusing about building OpenStack Packages?

I found OpenStack build task on Ubuntu QA site, but I am a little confusing about the build steps. Here's the link for build steps: ...
4
votes
0answers
514 views

ButtonMapping - Positional parameters

In an X configuration file mouse buttons can be mapped using a ButtonMapping option: Section "InputClass" # ... Option "ButtonMapping" "1 9 3 4 5 6 7 8 2" # ... EndSection Changing the ...
4
votes
0answers
2k views

How to install hp scanjet 200 in Ubuntu 12.04?

Unable to scan with hp scan-jet 200. When I type lsusb command in terminal it shows the scanner details. I opened the simple scan which displays no scanners found, and x sane image scanners also ...

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