question

Quentin M Randolph asked Aug 7, '15

java client blows up JRE - please help

Good evening, I am trying to get the AVS sample project up and running when trying to execute the javaclient it blows up in mid execution. Looks like a swing window pops open right before it errors our. Below is the output. Please help. pi@raspberrypi ~/echo/samples/javaclient $ mvn exec:java [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building Alexa Voice Service Sample Java Client 1.0 [INFO] ------------------------------------------------------------------------ [INFO] [INFO] >>> exec-maven-plugin:1.2.1:java (default-cli) @ sample-java-client >>> [INFO] [INFO] <<< exec-maven-plugin:1.2.1:java (default-cli) @ sample-java-client <<< [INFO] [INFO] --- exec-maven-plugin:1.2.1:java (default-cli) @ sample-java-client --- Requesting Registration Code # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x63ab4ca0, pid=2705, tid=1696298096 # # JRE version: Java(TM) SE Runtime Environment (8.0-b132) (build 1.8.0-b132) # Java VM: Java HotSpot(TM) Client VM (25.0-b70 mixed mode linux-arm ) # Problematic frame: # C [libQtGui.so.4+0x184ca0] QWidget::setAttribute(Qt::WidgetAttribute, bool)+0x24 # # Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again # # An error report file with more information is saved as: # /home/pi/echo/samples/javaclient/hs_err_pid2705.log # # If you would like to submit a bug report, please visit: # http://bugreport.sun.com/bugreport/crash.jsp # Aborted

alexa voice service

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Beefalo answered Aug 7, '15

Hi Quentin, Most likely this is due to a VLC plugin that is conflicting with the setup. I've found the quickest way to get this working is to install vlc and the plugins. Then go in and remove the specific plugins while leaving base plugin setup still there. IE: sudo apt-get install vlc* sudo apt-get remove vlc-plugin-* Hopefully this should fix the issue for you. -Bobby

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Quentin M Randolph answered Aug 10, '15

Thanks for getting back to me! It turned out that I needed to go back to java 1.7. That let the program actually run. But now I am getting no response from Alexa when I run it. It can see my voice commands on the phone app so I know its hearing me. But its just not playing anything back :(

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Bobby@Amazon answered Aug 10, '15

Hi Quentin, The app is designed to use the default audio output of the system. You may need to change this setting on your Raspberry Pi depending on whether you want the audio to go out via HDMI or the line out. You can do this in the terminal: sudo amixer cset numid=3 can be: 0 = Auto 1 = Line Out 2 = HDMI

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mark4in answered Aug 11, '15

I am having exactly the same problem. Uninstalling the vlc plugins did not help either. I also downgraded to java 1.7 but still no luck. Please suggest.

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Quentin M Randolph answered Aug 13, '15

Mark if you are using a raspberry pi then make sure you are using the ARM build for the JDK. That is what I am using. As soon as I get home I will get the exact version number for you. Your raspberry pi should have it installed already. Max

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Jeff W answered Aug 14, '15

Thanks for the suggestions. I also removed the vlc plugins and downgrade to java 1.7, still aborted when running the client application.

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AmitSharma answered Aug 20, '15

Am facing the same issue. # JRE version: Java(TM) SE Runtime Environment (7.0_40-b43) (build 1.7.0_40-b43) # Java VM: Java HotSpot(TM) Client VM (24.0-b56 mixed mode linux-arm ) # Problematic frame: # C [libfreetype.so.6+0x5b91c] FTC_SBitCache_LookupScaler+0x294c

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Bobby@Amazon answered Sep 3, '15

In order to get this working on a Raspberry Pi, I did the following: 1) Do a fresh install of Rasbian OS via NOOBs 2) Download and install Maven 3) Only install the following(some dependencies for them will also be installed): sudo apt-get install vlc-nox libvlc5 libvlccore5 vlc-data 4) Follow instructions to acquire reference implementation 5) Make sure to update the pom.xml file per the instructions: net.java.dev.jna jna 4.1.0 compile

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James Yu answered Sep 12, '15

Bobby, which java and javac version did you use in your Pi?

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James Yu answered Sep 12, '15

It looks to me the "vlc-plugin-notify" is the problematic VLC related package that's causing the reported issue. After removing it, i.e., sudo apt-get purge vlc-plugin-notify the AVS Java client runs fine, regardless Java 1.7 or 1.8.

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