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2
votes
0answers
26 views

How to disable Lazy Preempt in kernel

I'm relatively new to Linux and working on getting a real-time kernel up and running for robot applications. I'm on Ubuntu 14.04, using kernel 3.14.3 and the 3.14.3-rt5 real-time patch. Also using ...
0
votes
0answers
50 views

A2DP on PulseAudio - terrible choppy/skipping audio

I have paired my Bluetooth headset with my Ubuntu 12.04 laptop with a Bluetooth chip inside: lsusb | grep Bluetooth Bus 003 Device 003: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for ...
1
vote
0answers
166 views

“ERROR: Kernel configuration is invalid”

I have been stuck on this issue for two days now and couldnt find a fix for this. I installed a realtime kernel with sudo apt-get install linux-rt because KauNet (which is an ipfw extension) ...
0
votes
0answers
226 views

Netflix (Pipelight) Low Frame Rate With RT-Preempt Patch

Running Ubuntu 13.10 stock, I was getting horrible "jitter" across the entire OS. Meaning that, videos would not play smoothly compared to a TV set, Compiz effects were not smooth, games were not ...
0
votes
1answer
235 views

VisualBoyAdvance Battery Has Run Dry

I recently downloaded VBA and Pokemon Emerald. The game says "The Internal Battery has run dry" I've been told to go to Options>Emulator>Real Time Clock, but there is no clock! I have checked ...
0
votes
1answer
63 views

Multiple kernels choices realtime or no realtime

I have a dell latitude d510 currently running xubuntu 13.04 and linux 3.8. I want this machine to host JACK processes together with EDIROL UA-25 during a live session and therefore, it needs an RT ...
1
vote
2answers
207 views

What is the purpose of the RTAI package in Ubuntu

RTAI (Realtime Application Interface) is a Linux kernel patch, that exposes an API to userland processes, which can be used to create very low latency and jitter programs for realtime tasks. I've ...
0
votes
1answer
279 views

Ubuntu can be used as Hard Real time OS? [duplicate]

I want OS for Beagleboard which can support HARD REAL TIME OS Feature. is Ubuntu HARD Real time OS ?
2
votes
0answers
377 views

How do I install a real-time kernel with a patch I need to apply? [on hold]

I have ubuntu 12.04 with kernel 3.5. I have to install the RT_PREEMPT patch and I followed these steps: sudo apt-get install kernel-package fakeroot build-essential libncurses5-dev mkdir -p ...
1
vote
0answers
79 views

how to update dolphin file manager in real time

If I have dolphin open and I'm working in the terminal or on Windows files might be moved or added. How would I go about to make sure it updates the status of a directory of real time? Presently I ...
1
vote
0answers
31 views

how i can boot RT-lunix

Under UBUNTU 12.10, I just load the linux-rt kernel The installation seems to be uneventful. Only now, at the start, nothing new, it directly boot on my current system without offering me bios menu. ...
3
votes
2answers
139 views

Is it possible to direct system monitor output to a file?

I want to save to a text file the CPU and memory usage real-time info displayed in Gnome System Monitor 3.6. Does anybody know if this is possible? If so, how can it be done? If it's not possible with ...
0
votes
1answer
489 views

Automatically mirror a directory in Ubuntu

Running Ubuntu 12.04 I have a library of personal files and documents stored in Dropbox. I want the Dropbox folder to be automatically mirrored to a directory in the local machine, as a backup to the ...
1
vote
1answer
313 views

How to see real time updates of file system at terminal?

I am studying git and how it works with file system. I installed application called terminator, which allows me to open multiple terminals. I want to run git commands at the left terminal and want to ...
0
votes
2answers
1k views

12.04 Ubuntu studio PREEMPT_RT kernel options

My audio processing needs require a preempt_rt kernel. I roughly followed the guide: https://wiki.ubuntu.com/KernelTeam/GitKernelBuild with a little help from: ...
-2
votes
1answer
342 views

How to install backported programms?

How to get backported kernel and nautilus? im on 10.04 i want fixes witch are made in 12.04 how to get them? im beeing told about installing backported kernel. On 10.04 i have some bugs witch been ...
1
vote
3answers
177 views

What can I do about the fglrx driver interfering with jackd?

The jack-audio-connection-kit needs to run in realtime mode and my system is configured accordingly. I'm using the fglxr driver. With Unity-2d everything is fine. With Unity-3d, jack-clients ...
7
votes
1answer
4k views

Using the RandR-enabled nvidia 302.xx beta driver in 12.04 with a realtime kernel

How can I use the recent beta of the 302 version of the nvidia driver (which finally supports the RandR extension!) with a realtime kernel in Precise? This question contains information on enabling ...
20
votes
4answers
33k views

How can I install a realtime kernel?

I have read a lot of threads with similar questions, but after reading the answers, I am very confused. I have found in them lots of url's with repositories but people discusses about which ...
1
vote
1answer
616 views

Is RTLinux the same as linux-rt?

I'm trying to install a hard realtime kernel in Lucid for some robotics work. My preference is RTLinux (http://rtlinuxfree.com) by Wind River Systems. I also see that there is a package by the name ...
1
vote
1answer
1k views

Can I install rtlinux?

How do I install rtlinux in Ubuntu? If I get it to install will it make software work abnormally?
3
votes
2answers
2k views

Can it be harmful to grant jackd realtime priority?

I am apt-get installing Ardour, a sound mixing program, just to try it out. Installing Ardour also installs JACK, a dependency. As part of the JACK installation script, I get the following dialog: ...
2
votes
1answer
486 views

Realtime kernel running as virtual machine

I read that using a Linux kernel (Ubuntu rt kernel) was able to increase the response time of a Java application by 4x. My only problem is that I must run a program that only has a Windows ...
3
votes
1answer
816 views

Reducing audio delay from redirecting input to output

I tried using the solution presented in a related question for redirecting my audio input to my output, but the problem is that there's a very noticeable lag. It's especially obvious to me because I ...
3
votes
2answers
1k views

Why to use ordinary kernel if there's realtime one?

What are benefits of an ordinary Ubuntu kernel compared to realtime one? What are realtime kernel's tradeoffs?
7
votes
4answers
6k views

How to install realtime kernel?

Axel wrote: "try using the a realtime kernel, it's more responsive and the apps "seems to hang less"". How to do this?
1
vote
2answers
318 views

How to set up video and audio players to use realtime (or close) priority?

I use raw mplayer to play video, DeaDBeeF to play audio and Skype for VoIP. Heavy CPU-consuming processes (like rendering a website in Firefox, redrawing a Java IDE window or compilation) cause ...