android - Buffer Queue has been abandoned -

i writing app make lantern lighting led of android device. of time works well, see message "e/bufferqueueproducer﹕ [unnamed-5260-0] queuebuffer: bufferqueue has been abandoned" @ logcat.

after that, app not able light led of device. able gain control of led again when orientation changes... quite weird. have done lots of changes thing manage screw never able light led.

could me issue?

i attach .java file , logcat corresponding problem.

package com.spc.acrux.linterna;  import android.content.context; import android.content.intent; import android.content.pm.packagemanager; import android.graphics.surfacetexture; import android.hardware.camera; import android.hardware.camera.parameters; import android.net.uri; import android.os.bundle; import android.support.v7.app.actionbaractivity; import android.util.log; import android.view.menu; import android.view.menuitem; import android.view.view; import android.widget.button; import android.widget.textview; import android.widget.toast;  import com.apptracker.android.track.apptracker; import com.google.android.gms.ads.adlistener; import com.google.android.gms.ads.adrequest; import com.google.android.gms.ads.adview; import com.google.android.gms.ads.interstitialad;  import java.io.ioexception;   public class mainactivity extends actionbaractivity {     // remove below line after defining own ad unit id.     //private static final string toast_text = "test ads being shown. "     //        + "to show live ads, replace ad unit id in res/values/strings.xml own ad unit id.";      private static final int start_level = 1;     private int mlevel;     private button mnextlevelbutton;     private interstitialad minterstitialad;     private textview mleveltextview;     private camera camera;     //flag detect flash on or off     private boolean islighon = false;       @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);           // leadbolt         if(savedinstancestate == null) {             // initialize leadbolt sdk api key             apptracker.startsession(getapplicationcontext(), "hhxsj6gsjlqcgfqgia7zunbhke5nbx1k");         }         // cache leadbolt ad without showing         apptracker.loadmoduletocache(getapplicationcontext(),"inapp");        // mostrar un anuncio        adview madview = (adview) findviewbyid(r.id.adview);         adrequest adrequest = new adrequest.builder().build();         madview.loadad(adrequest);            // crear el boton on / off         button holaplayerbtn = (button)findviewbyid(r.id.buttononoff);          // call when want display leadbolt interstitial         apptracker.loadmodule(getapplicationcontext(),"inapp");           context context = this;         packagemanager pm = context.getpackagemanager();          // if device support camera?         if (!pm.hassystemfeature(packagemanager.feature_camera)) {             log.e("err", "device has no camera!");             return;         }          camera = camera.open();         try {             camera.setpreviewtexture(new surfacetexture(0));         } catch (ioexception e) {             e.printstacktrace();         }         final parameters p = camera.getparameters();          // create next level button, tries show interstitial when clicked.         mnextlevelbutton = ((button) findviewbyid(r.id.next_level_button));         mnextlevelbutton.setenabled(false);         mnextlevelbutton.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                 showinterstitial();             }         });          // create text view show level number.         mleveltextview = (textview) findviewbyid(r.id.level);         mlevel = start_level;          // create interstitialad , set adunitid (defined in values/strings.xml).         minterstitialad = new interstitialad(this);         minterstitialad.setadunitid(getstring(r.string.interstitial_ad_unit_id));         minterstitialad.setadlistener(new adlistener() {             @override             public void onadloaded() {                 mnextlevelbutton.setenabled(true);             }              @override             public void onadfailedtoload(int errorcode) {                 mnextlevelbutton.setenabled(true);             }              @override             public void onadclosed() {                 // proceed next level.                 gotonextlevel();             }         });         loadinterstitial();          // toasts test ad message on screen. remove after defining own ad unit id.         //toast.maketext(this, toast_text, length_long).show();          //lo que hace el botón "hola" que se usa para encender y apagar la linterna         holaplayerbtn.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                 try {                     string texto = getstring(r.string.pulsaste);                     toast.maketext(mainactivity.this, texto, toast.length_long).show();                      //aqui hay que activar el flash y la cámara                     if (islighon) {                          log.i("info", "torch turn off!");                          p.setflashmode(parameters.flash_mode_off);                         camera.setparameters(p);                         camera.stoppreview();                         islighon = false;                      } else {                          log.i("info", "torch turn on!");                          p.setflashmode(parameters.flash_mode_torch);                          camera.setparameters(p);                         camera.startpreview();                         islighon = true;                      }                      }                     catch (exception e) {                     e.printstacktrace();                 }             }         });       }       @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.menu_main, menu);         return true;     }      @override     public boolean onoptionsitemselected(menuitem item) {         // handle action bar item clicks here. action bar         // automatically handle clicks on home/up button, long         // specify parent activity in androidmanifest.xml.          switch (item.getitemid()) {             case r.id.otras_apps:                 startactivity(new intent(intent.action_view, uri.parse("market://search?q=pub:\"pedro santangelo\"") ) );                 return true;             case r.id.salir:                // flurryagent.onendsession(this);             {                 if (camera != null) {                     camera.release();                 }                  this.finish();                 return true;             }             default:                 return super.onoptionsitemselected(item);         }      }      private void showinterstitial() {         // show ad if it's ready. oth<string name="otras_apps">otras aplicaciones</string>oast , reload ad.         if (minterstitialad != null && minterstitialad.isloaded()) {             minterstitialad.show();         } else {             toast.maketext(this, getstring(r.string.aderror), toast.length_short).show();             gotonextlevel();         }     }      private void loadinterstitial() {         // disable next level button , load ad.         mnextlevelbutton.setenabled(false);         adrequest adrequest = new adrequest.builder().build();         minterstitialad.loadad(adrequest);     }      private void gotonextlevel() {         // show next level , reload ad prepare level after.         mleveltextview.settext(getstring(r.string.nivel) + " " + (++mlevel));         loadinterstitial();      }      //public void activar() {     //activar o desactivar la linterna... no se usa ya.     //    final string texto = "pulsaste on / off ";     //    toast.maketext(this, texto, length_long).show();      //}      @override     protected void ondestroy() {         super.ondestroy();         if (camera != null) {             camera.release();         }     } /*     @override     public void onpause() {         super.onpause();         if (camera != null) {             camera.release();         }      }      @override     public void onstop() {         super.onstop();         if (camera != null) {             camera.release();         }      } */  } 

===== logcat shown: ========

05-11 19:15:23.515    5260-5260/? i/art﹕ late-enabling -xcheck:jni 05-11 19:15:23.751    5260-5260/com.spc.acrux.linterna i/apptracker﹕ session started. sdk version in use 5.1 05-11 19:15:23.756    5260-5260/com.spc.acrux.linterna w/apptracker﹕ event listener not implemented before startsession called. 05-11 19:15:23.805    5260-5260/com.spc.acrux.linterna i/apptracker﹕ loading module caching enabled location:inapp 05-11 19:15:23.842    5260-5260/com.spc.acrux.linterna w/resourcesmanager﹕ asset path '/system/framework/com.android.media.remotedisplay.jar' not exist or contains no resources. 05-11 19:15:23.842    5260-5260/com.spc.acrux.linterna w/resourcesmanager﹕ asset path '/system/framework/com.android.location.provider.jar' not exist or contains no resources. 05-11 19:15:24.011    5260-5260/com.spc.acrux.linterna i/webviewfactory﹕ loading com.google.android.webview version 42.0.2311.138 (code 2311138) 05-11 19:15:24.038    5260-5260/com.spc.acrux.linterna i/libraryloader﹕ time load native libraries: 3 ms (timestamps 8049-8052) 05-11 19:15:24.038    5260-5260/com.spc.acrux.linterna i/libraryloader﹕ expected native library version number "",actual native library version number "" 05-11 19:15:24.057    5260-5260/com.spc.acrux.linterna v/webviewchromiumfactoryprovider﹕ binding chromium main looper looper (main, tid 1) {23b24f79} 05-11 19:15:24.057    5260-5260/com.spc.acrux.linterna i/libraryloader﹕ expected native library version number "",actual native library version number "" 05-11 19:15:24.058    5260-5260/com.spc.acrux.linterna i/chromium﹕ [info:library_loader_hooks.cc(112)] chromium logging enabled: level = 0, default verbosity = 0 05-11 19:15:24.072    5260-5260/com.spc.acrux.linterna i/browserstartupcontroller﹕ initializing chromium process, singleprocess=true 05-11 19:15:24.073    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:15:24.075    5260-5260/com.spc.acrux.linterna e/sysutils﹕ applicationcontext null in applicationstatus 05-11 19:15:24.098    5260-5348/com.spc.acrux.linterna w/audiomanagerandroid﹕ requires bluetooth permission 05-11 19:15:24.098    5260-5260/com.spc.acrux.linterna w/chromium﹕ [warning:resource_bundle.cc(286)] locale_file_path.empty() 05-11 19:15:24.099    5260-5260/com.spc.acrux.linterna i/chromium﹕ [info:aw_browser_main_parts.cc(63)] load apk succesful, fd=38 off=57784 len=4071 05-11 19:15:24.101    5260-5260/com.spc.acrux.linterna i/chromium﹕ [info:aw_browser_main_parts.cc(76)] loading webviewchromium.pak from, fd:39 off:7953032 len:1161174 05-11 19:15:24.111    5260-5260/com.spc.acrux.linterna i/adreno-egl﹕ <qegldrvapi_eglinitialize:379>: qualcomm build: 01/14/15, ab0075f, id3510ff6dc 05-11 19:15:24.178    5260-5260/com.spc.acrux.linterna i/ads﹕ csireporterfactory: csi not enabled. no csi reporter created. 05-11 19:15:24.186    5260-5260/com.spc.acrux.linterna i/ads﹕ starting ad request. 05-11 19:15:24.189    5260-5260/com.spc.acrux.linterna i/ads﹕ use adrequest.builder.addtestdevice("46b876313bcc4b37c16a2b0f9eccad83") test ads on device. 05-11 19:15:24.209    5260-5260/com.spc.acrux.linterna i/apptracker﹕ loading module location:inapp 05-11 19:15:24.213    5260-5260/com.spc.acrux.linterna w/apptracker﹕ no ad available location inapp. please run loadmoduletocache first 05-11 19:15:24.213    5260-5260/com.spc.acrux.linterna e/apptracker﹕ module inapp failed load:ad not ready 05-11 19:15:24.400    5260-5260/com.spc.acrux.linterna i/ads﹕ starting ad request. 05-11 19:15:24.400    5260-5260/com.spc.acrux.linterna i/ads﹕ use adrequest.builder.addtestdevice("46b876313bcc4b37c16a2b0f9eccad83") test ads on device. 05-11 19:15:24.423    5260-5428/com.spc.acrux.linterna d/openglrenderer﹕ use egl_swap_behavior_preserved: true 05-11 19:15:24.434    5260-5260/com.spc.acrux.linterna d/atlas﹕ validating map... 05-11 19:15:24.475    5260-5428/com.spc.acrux.linterna i/openglrenderer﹕ initialized egl, version 1.4 05-11 19:15:24.481    5260-5428/com.spc.acrux.linterna d/openglrenderer﹕ enabling debug mode 0 05-11 19:15:26.050    5260-5260/com.spc.acrux.linterna i/apptracker﹕ module inapp cached successfully. 05-11 19:15:27.554    5260-5361/com.spc.acrux.linterna w/chromium﹕ [warning:data_reduction_proxy_config.cc(150)] spdy proxy off @ startup 05-11 19:15:27.573    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:15:27.590    5260-5260/com.spc.acrux.linterna w/awcontents﹕ ondetachedfromwindow called when detached. ignoring 05-11 19:15:27.608    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:15:27.608    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:15:27.730    5260-5260/com.spc.acrux.linterna w/bindingmanager﹕ cannot call determinedvisibility() - never saw connection pid: 5260 05-11 19:15:27.807    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:15:27.809    5260-5260/com.spc.acrux.linterna w/awcontents﹕ ondetachedfromwindow called when detached. ignoring 05-11 19:15:27.820    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:15:27.820    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:15:27.871    5260-5260/com.spc.acrux.linterna w/bindingmanager﹕ cannot call determinedvisibility() - never saw connection pid: 5260 05-11 19:15:29.284    5260-5260/com.spc.acrux.linterna i/ads﹕ ad finished loading. 05-11 19:15:30.291    5260-5260/com.spc.acrux.linterna i/ads﹕ scheduling ad refresh 30000 milliseconds now. 05-11 19:15:30.300    5260-5260/com.spc.acrux.linterna i/ads﹕ ad finished loading. 05-11 19:15:50.616    5260-5260/com.spc.acrux.linterna i/info﹕ torch turn on! 05-11 19:15:50.732    5260-5428/com.spc.acrux.linterna v/renderscript﹕ application requested cpu execution 05-11 19:15:50.742    5260-5428/com.spc.acrux.linterna v/renderscript﹕ 0x9c94c800 launching thread(s), cpus 4 05-11 19:15:58.265    5260-5260/com.spc.acrux.linterna i/info﹕ torch turn off! 05-11 19:15:58.808    5260-5260/com.spc.acrux.linterna i/choreographer﹕ skipped 32 frames!  application may doing work on main thread. 05-11 19:16:00.292    5260-5260/com.spc.acrux.linterna i/ads﹕ starting ad request. 05-11 19:16:00.293    5260-5260/com.spc.acrux.linterna i/ads﹕ use adrequest.builder.addtestdevice("46b876313bcc4b37c16a2b0f9eccad83") test ads on device. 05-11 19:16:01.011    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:16:01.016    5260-5260/com.spc.acrux.linterna w/awcontents﹕ ondetachedfromwindow called when detached. ignoring 05-11 19:16:01.030    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:16:01.030    5260-5260/com.spc.acrux.linterna w/art﹕ attempt remove local handle scope entry irt, ignoring 05-11 19:16:01.096    5260-5260/com.spc.acrux.linterna w/bindingmanager﹕ cannot call determinedvisibility() - never saw connection pid: 5260 05-11 19:16:01.687    5260-5260/com.spc.acrux.linterna i/ads﹕ scheduling ad refresh 30000 milliseconds now. 05-11 19:16:01.690    5260-5260/com.spc.acrux.linterna i/ads﹕ ad finished loading. 05-11 19:16:01.747    5260-5260/com.spc.acrux.linterna w/bindingmanager﹕ cannot call determinedvisibility() - never saw connection pid: 5260 05-11 19:16:08.705    5260-5260/com.spc.acrux.linterna i/info﹕ torch turn on! 05-11 19:16:10.141    5260-5278/com.spc.acrux.linterna e/bufferqueueproducer﹕ [unnamed-5260-0] queuebuffer: bufferqueue has been abandoned 05-11 19:16:10.146    5260-6865/com.spc.acrux.linterna e/bufferqueueproducer﹕ [unnamed-5260-0] dequeuebuffer: bufferqueue has been abandoned 05-11 19:16:10.146    5260-5279/com.spc.acrux.linterna e/bufferqueueproducer﹕ [unnamed-5260-0] dequeuebuffer: bufferqueue has been abandoned 05-11 19:16:10.147    5260-5278/com.spc.acrux.linterna e/bufferqueueproducer﹕ [unnamed-5260-0] dequeuebuffer: bufferqueue has been abandoned 05-11 19:16:10.147    5260-6865/com.spc.acrux.linterna e/bufferqueueproducer﹕ [unnamed-5260-0] dequeuebuffer: bufferqueue has been abandoned 05-11 19:16:10.148    5260-5279/com.spc.acrux.linterna e/bufferqueueproducer﹕ [unnamed-5260-0] dequeuebuffer: bufferqueue has been abandoned 05-11 19:16:10.148    5260-5278/com.spc.acrux.linterna e/bufferqueueproducer﹕ [unnamed-5260-0] dequeuebuffer: bufferqueue has been abandoned 05-11 19:16:10.149    5260-6865/com.spc.acrux.linterna e/bufferqueueproducer﹕ [unnamed-5260-0] dequeuebuffer: bufferqueue has been abandoned