I have a Raspberry Pi that I'm trying to hook-up to walkie-talkies to announce the current time every half hour plus different status updates automatically.
I had a CRON job running mpg123 that was announcing the time over the walkies perfectly, but then when I installed the drivers for this RasClock module as specified here (https://www.modmypi.com/blog/installing-the-rasclock-raspberry-pi-real-time-clock), all audio stopped working.
speaker-test says:
speaker-test 1.0.25
Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
Using 16 octaves of pink noise
Playback open error: -1,Operation not permitted
and mpg123 says:
[module.c:142] error: Failed to open module jack: file not found
[module.c:142] error: Failed to open module portaudio: file not found
[pulse.c:84] error: Failed to open pulse audio output: Connection refused
[nas.c:220] error: could not open default NAS server
[module.c:142] error: Failed to open module openal: file not found
[audio.c:180] error: Unable to find a working output module in this list: alsa,oss,jack,portaudio,pulse,nas,openal
[audio.c:532] error: Failed to open audio output module
[mpg123.c:897] error: Failed to initialize output, goodbye.
Now, the machine tends to freeze up a lot, too. When I tried suggestions I found online, such as adding "LD_LIBRARY_PATH=/usr/lib/mpg123" or "export LD_LIBRARY_PATH=/usr/lib:/usr/lib/mpg123" before the command, it made no difference.
What little hair I have left thanks you in advance for helping me through this.
I had the same error message with mpg123.
Before this message, I installed all these packages: mysql-server, build-essential, libmysqlclient-dev, libapache2-mod-wsgi.
I also changed group:
# usermod -G anothergroup pi
One of these two manipulations have caused my problem.
The solution in my case ?
Go in the /etc/group file and modify the line beginning with "audio" from this...
audio:x:NN:
to that...
audio:x:NN:pi
N.B.: NN is the GID. pi is the Raspberry Pi's default username.
To achieve the same result, there is also this command :
# usermod -a -G audio pi
Log out from your session and log in again.
P.S.: Could somebody add the mpg123 tag because I spent a lot of time without finding this topic, as I have exactly the same problem with mpg123 ?
I had the same issue run this command should fix it modprobe snd_bcm2835
Related
I found this repo with a systemtap script for letting me use QWERTY ctrl-shortcuts on my dvorak layout. Unfortunately, I can't get it to work, but I don't think it has to do with the script itself. I'm running Pop OS and I think that it's because the linux-image I need with all the debug symbols doesn't exist.
The script says I need to install linux-headers-$(uname -r) linux-image-$(uname -r)-dbg
For me, this turns into linux-headers-5.11.0-7620-generic linux-image-5.11.0-7620-generic-dbg
linux-headers-5.11.0-7620-generic exists and I'm able to download it using apt-get.
linux-image-5.11.0-7620-generic-dbg can't be installed using apt-get. I can install
linux-image-5.11.0-7620-generic, but that's not the same thing. I've spent time looking online for it and adding different keys to apt-get, but I haven't been able to find anything with that name. If the problem is not having the correct linux-image package installed, I need help being pointed in the right direction as to where I can get it.
I tried following the directions here, and I've also searched this to no avail. I tried downloading and installing linux-image-4.4.0-142-generic-dbgsym_4.4.0-142.168_amd64.ddeb but that also didn't work.
If this isn't the problem, I've provided the output of the script. Any help is appreciated.
peyton#pop-os:~/scripts$ sudo stap -g -v dvorak-qwerty.stp
Pass 1: parsed user script and 477 library scripts using 116428virt/91336res/7612shr/83628data kb, in 140usr/30sys/168real ms.
semantic error: resolution failed in DWARF builder
semantic error: resolution failed in DWARF builder
semantic error: while resolving probe point: identifier 'module' at dvorak-qwerty.stp:152:7
source: probe module("evdev").function("evdev_events") {
^
semantic error: no match
semantic error: resolution failed in DWARF builder
Pass 2: analyzed script: 2 probes, 0 functions, 1 embed, 0 globals using 119016virt/94812res/8680shr/86216data kb, in 10usr/0sys/7real ms.
Pass 2: analysis failed. [man error::pass2]
Tip: /usr/share/doc/systemtap/README.Debian should help you get started.
Yes, debuginfo downloading has been a pain on many distros. However, if you're running Debian kernels, see: https://wiki.debian.org/Debuginfod for instructions on using a new automated system. Generally: https://sourceware.org/elfutils/Debuginfod.html .
Repost from user Jin G.
After going through the Flow installation tutorial I tried to run the sumo demo example using the following terminal command:
python examples/sumo/sugiyama.py
I got the following error message: Could not connect to TraCI server at localhost: 40335 [Errno 111] Connection refused
Any thoughts on what to do to fix this issue?
After days of retrying and searching I found a fix..
My issue was that I did not activate the conda environment when running the simulations.
To do so before running any simulations type the following into the command prompt:
source activate flow
Problem when calling netconvert in sumo:
I am trying to create my own scenario for simulation purposes.
I am using OpenStreetMaps for this.
python osmWebWizard.py
opens the browser and I select the area which I download.
netconvert --osm-files osm_bbox.osm.xml -o osm.net.xml
The error message I get is
Error: Cannot import network data without PROJ-Library. Please install packages proj before building sumo
Warning: Environment variable SUMO_HOME is not set, using built in type maps.
Quitting (on error).
My attempt to fix the problem is:
sudo apt-get install libproj*
But it seems like a dead end there and I am out of options.
Thank you.
EDIT
I have a gut feeling it has to do with libproj0 not being available anymore.
I followed the tutorial on this site, to get my RaspberryPi NoIR-Cam running. After starting it i am retrieving the following error:
mmal: mmal_component_create_core: could not create component 'vc.ril.camera' (1)
sh: 1: /var/www/html/macros/error_hard.sh: Permission denied
mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM)
This looks like a permission thing, but I executed
chmod u+x *.sh
just like they mentioned in the tutorial. Do you have any idea what I am doing wrong here?
Explanation: It is a permission problem, the RPi interface is trying to use the pi camera at the same time as something else, and that something else has root privileges.
I have used this interface before to stream PiCamera data into a webserver, and use three.js to render it and make it vr compatible. This RPi web interface is pretty frustrating for me. But, I have had that problem before. First, check your camera connection to the pi. To do this type raspistill -t 0 into the terminal. If it brings up a preview window, that is not the problem, if it doesn't bring up a preview window, fiddle with the connection and try again. Next, if that doesn't work, run ./RPi_Cam_Web_Interface_Installer.sh. This should bring up a crude GUI. Use your arrow keys to select number 4, or start camera. Once it starts, it should say 'started' next to it. You may get an error message at the bottom saying mmal: mmal_component_create_core: could not create component 'vc.ril.camera' (1)
sh: 1: /var/www/html/macros/error_hard.sh: Permission denied
mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM) (or the same error you got). To fix this, close the terminal, open up a new one, and cd RPi_Web_Interface and then run again ./RPi_Web_Interface_Installer.sh select configure, enable autostart and camera. Then reboot. When the pi boots up, immediately open a terminal cd RPi_Web_Interface and ./RPi_Web_Interface_Installer.sh and check if the camera is started (you will know because the green started message will be next to the start option). If it isn't started, start it. IF you get the same error messages, I don't know what to tell you.
Had this exact error so:
ran sudo raspi-config and re-enabled the camera -problem went away
I downloaded the source code of Linphone app from GitHub (https://github.com/onmyway133/linphone-iphone) and tried to run it on my iPhone. It is working fine with transport selected as UDP but when I select transport setting as TCP outgoing works fine but the app don't notify about any incoming call.
I also tried to track the network calls by installing Linphone for mac on my macbook but for TCP it not even start any session of network requests.
Any one faced such issue or is there any other way to achieve SIP calling in local network? Any help is welcome.
The source code at the URL mentioned in the question "https://github.com/onmyway133/linphone-iphone" is not latest one. I had to check out the latest version from git url mention at linphone.org and after trying it many times finally I got the complete code and also I had to do few changes to compile the latest source code successfully.
I faced this error while compiling the code on terminal:
Shell script 'Makefile' at path 'linphone-iphone/submodules/build-i386-apple-darwin/mssilk/sdk' was downloading corrupt SILK_SDK_SRC_v1.0.9.zip.
Fix: System terminal was downloading only 600Kbs of file size (i.e. corrupt zipped file) from the URL http://developer.skype.com/silk/SILK_SDK_SRC_v1.0.9.zip due to which next command was not able to unzip it and was displaying file missing error. I changed the default URL to 'http://bkvoice.googlecode.com/files/SILK_SDK_SRC_v1.0.9.zip' thus process was able to download the file that was actually 62.9MBs of size.
Hope it'll help someone.