I'm remoted into a Linux VM running CentOS 7 via NoMachine. NoMachine presents the client's microphone as a pulseaudio source. I can use Audacity to record from the pulseaudio source.
However, other applications - Chrome, Firefox, Slack, WebEx - don't see or don't recognize the pulseaudio source as a microphone.
test.webrtc.org says [ FAILED ] Failed to get access to local media due to error: NotFoundError.
pacmd list-sources shows:
2 source(s) available.
index: 1
name: <nx_voice_out.monitor>
driver: <module-null-sink.c>
* index: 2
name: <nx_audio_in.monitor>
driver: <module-null-sink.c>
How do I get applications to recognize the pulseaudio source as a microphone?
Got it working by remapping the source:
pacmd load-module module-remap-source master=nx_voice_out.monitor source_name=Microphone
I don't know why this works, since all I've done is to essentially rename the source. I've not remapped any properties of the original source. Perhaps applications do not like the .monitor in the name of the original source.
I also needed to unload the suspend on idle module:
pacmd unload-module module-suspend-on-idle
Otherwise pulseaudio sometimes suspends the remapped source and I'm unable to unsuspednd it.
Related
When using the web page displayed by drill on localhost:8047/query (by default) running the following commands fail:
use dfs.mydfs;
and then:
show files;
Then I receive this error:
org.apache.drill.common.exceptions.UserRemoteException: VALIDATION ERROR: SHOW FILES is supported in workspace type schema only. Schema [] is not a workspace schema. [Error Id: 872e6708-0aaa-480e-af32-9aaf6f84de2b on 172.28.128.1:31010]
While if I use the terminal to enter the same commands the command works correct.
I've also found that this affects 1.6 and above and that this behaviour is not seen on 1.5 below.
This command works in both the web and commmand line/terminal version:
show files in df.workspace;
I have configured multiple types of dfs and have tried both OS X and Windows 10 and found the issue to be the same.
I tried looking through the drill jira to see if this was registered as bug and I looked briefly through the release notes as well.
I try to install Proxmox using a USB, and when I click to install, I see the next error:
testing cdrom /dev/sr0
umount: can't umount /mnt: Invalid argument
testing again in 5 seconds
Finally:
no cdrom found - unable to continue (type exit or CTRL-D to reboot)
I prepare the USB using ImageUSB in Windows, and it does have the previous fail, then I try to prepare in Ubuntu using dd if=pve-cd.iso of=/dev/XYZ bs=1M, I don't know where is the problem.
For someone out there still having similar issue, use below method to create the installation media. That should help.
Instructions for Windows
Download Etcher from https://etcher.io , select the ISO and your USB Drive.
If this doesn’t work, alternatively use the OSForensics USB installer from http://www.osforensics.com/portability.html
Instructions for GNU/Linux
You can simply use dd on UNIX like systems. First download the ISO image, then plug in the USB stick. You need to find out what device name gets assigned to the USB stick (see below). Then run:
dd if=proxmox-ve_*.iso of=/dev/XYZ bs=1M
Note: Be sure to replace /dev/XYZ with the correct device name.
Caution: Be very careful, and do not overwrite the hard disk!
Instructions from: https://pve.proxmox.com/wiki/Install_from_USB_Stick
Since it took me quite some time to figure out how to get Xtion (Primesense) to work on VMware I thought to share it here with you. (with Kinect I have a problem to let ROS see the device even though VMware has successfully connected it).
roslaunch openni2_launch openni2.launch
Running the above command gave me the error:
Warning: USB events thread - failed to set priority. This might cause loss of data...
I either got a single frame or no frame when running "rviz" and Add --> Image --> Image topic --> /camera/rgb/image_raw
So how do I get video frames in Ubuntu from a Primesense device while using a Virtual Machine (VMware)?
My specs
Windows 7 running VMware 10.0.4 build-2249910
Ubuntu 12.04.5 Precise in VMware
ROS Hydro
The following question pointed me in the right direction: http://answers.ros.org/question/77651/asus-xtion-on-usb-30-ros-hydro-ubuntu-1210/?answer=143206#post-id-143206
In the answer of blizzardroi (not selected answer) he/she mentions that USBInterface should be 0. I reasoned that since my main Machine is Windows, I should set UsbInterface to 1, which indeed solved it.
Solution
Go to /etc/openni2/ (from system folder, not Home) and open PS1080.ini with administrator rights (e.g. sudo gedit PS1080.ini). Search for UsbInterface, remove the ; and change the value to 1. It should look like below:
; USB interface to be used. 0 - FW Default, 1 - ISO endpoints (default on Windows), 2 - BULK endpoints (default on Linux/Mac/Android machines)
UsbInterface=1
Additional
From previous experience it may also be related that your Windows system may need the kinect drivers as well. If the above not works, try to install the following:
(Kinect SDK) https://www.microsoft.com/en-us/download/details.aspx?id=34808
(OpenNI2 Windows) http://structure.io/openni
p.s. Don't forget your drivers for Ubuntu (replace hydro with your ROS version)
sudo apt-get install ros-hydro-openni*
Important
It doesn't solve the error below, but rviz returns video, which means that we can read the data the Primesense device publishes!
Warning: USB events thread - failed to set priority. This might cause loss of data...
Got the same warning from opennni (issued at start by a binary located at Tools/PSLinkConsole) with another sensor.
Solved by starting process as sudo - my guess: to set priority to USB event threads you need root access. :)
I have never before worked in Debian environment. I have some problem with camera, I was looking for answers but find nothing.
I am working in virtualbox, the camera is plugged through virtualbox. I am using is my laptop webcam, Lenovo EasyCamera. When I lauch program, for example cheese, I get this message :
jakub#debian:~$ cheese
OpenGL Warning: crPixelCopy3D: simply crMemcpy'ing from srcPtr to dstPtr
(cheese:3368): Gtk-WARNING **: Attempting to add a widget with type GtkImage to a GtkToggleButton, but as a GtkBin subclass a GtkToggleButton can only contain one widget at a time; it already contains a widget of type GtkLabel
libv4l2: error turning on stream: Brak miejsca na urządzeniu
** (cheese:3368): WARNING **: Error starting streaming on device '/dev/video0'.
** (cheese:3368): WARNING **: Could not negotiate format
When cheese is working, the diode from the cam is on, so camera is working, but why Debian cannot show me the image.
I hope you will know what to do. I appreciate your help.
It appears to be the same as this issue:
libv4l2: error turning on stream: No space left on device
You probably need to enable USB 2.0 in your virtual machine and pass the device into your guest OS using a high-speed USB host controller (EHCI).
You may need the VirtualBox Extension Pack, I remember it being required for USB 2.0 in the past. I can't find any current information about that, though, perhaps EHCI support is now included already.
I've successfully run a Selenium Grid on my local machine, and I've moved it to a server (windows Server 2008 R2).
The server instance has run successfully with locally launched agents
The server hosted console is visible over the internet
However, when I create a new remote control on a different machine, they build successfully but they do not register with the hub.
The command line is:
ant -Dport=6601 -Dhost=<ip address of my box> -DhubURL=http://ab.cdefg.ca:4444/wd/hub* -Denvironment"firefox" launch-remote-control
I've also used my hostname as a replacement for my ip name (pc78.subdomain.domain.ca)
If I do not specify the Denvironment, I get the following back:
C:\Sgrid\selenium-grid-1.0.8>ant -Dport=6601 -Dhost=pcname.subdomain.domain.ca -Dhu
bURL=http://ab.cdefg.ca:4444/wd/hub* launch-remote-control
Buildfile: C:\Sgrid\selenium-grid-1.0.8\build.xml
launch-remote-control:
[java] Sep 15, 2011 3:37:11 PM com.thoughtworks.selenium.grid.remotecontrol
.RegistrationRequest execute
[java] INFO: Registering to http://ab.cdefg.ca.ca:4444/wd/hub*/registration
-manager/register
[java] Exception in thread "main" java.lang.IllegalStateException: Could no
t register successfuly to http://ab.cdefg.ca.ca:4444/wd/hub*/registration-manage
r/register with environment '*firefox'. Most likely this environment is not defi
ned on the hub.
[java] at com.thoughtworks.selenium.grid.remotecontrol.RegistrationRequ
est.execute(RegistrationRequest.java:29)
[java] at com.thoughtworks.selenium.grid.remotecontrol.SelfRegisteringR
emoteControl.register(SelfRegisteringRemoteControl.java:29)
[java] at com.thoughtworks.selenium.grid.remotecontrol.SelfRegisteringR
emoteControlLauncher.main(SelfRegisteringRemoteControlLauncher.java:27)
BUILD FAILED
C:\Sgrid\selenium-grid-1.0.8\build.xml:90: Java returned: 1
Total time: 1 second
If do specify the Denvironment, I get the following back:
C:\Sgrid\selenium-grid-1.0.8>ant -Dport=6601 -Dhost=pcname.sub.domain.ca -Dhu
bURL=http://ab.cdefg.ca:4444 -Denvironment"firefox" launch-remote-control
Buildfile: C:\Sgrid\selenium-grid-1.0.8\build.xml
BUILD SUCCESSFUL
Total time: 0 seconds
C:\Sgrid\selenium-grid-1.0.8>
However, the console does not recognize or utilize this agent. Nor is this agent visible on http://localhost:4444/console
So I thought, I'll reverse it and use my local as a server and try and register the server as a remote control, but the same problem repeated itself, command line success, but functionally no activity. Sounds like a network problem, so I booted up a third machine, installed and tested selenium grid (works). Console is visible from my laptop, running on my desktop, via ipaddress:4444/console.
I then launched a remote control, had the same problem. Okay, I then turn off the firewall on my local desktop (treating it as my server) and my laptop (treating it as a remote). Same problem.
Finally, thinking maybe the existence of a local console is messing with the remote launch, I reboot and run only the following:
ant -Dport=6601 -Dhost=<laptop ip> -DhubURL=http://<desktop ip>:4444 -Denvironment"firefox" launch-remote-control
Same problem.
Also I can ping the server from my desktop
Is there a setting I'm missing? It seems like everything in each instance is okay, and all of them have the same versions installed. Clearly something isn't getting from one place to the other, but I have no idea how to work around it when everything else seems okay. Many thanks.
You need an "=" after the environment. I.e., -Denvironment="firefox".
ant -Dport=6666 -Dhost=pc78.subdomain.domain.ca -DhubURL=http://ab.cdef.ca:4444 launch-remote-control
Thanks for the kick start - dropping the "/wd/hub*" from the DhubURL and dropping the Denvironment all together actually got me working - thanks for the response. I