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Silverlight audio distorts/slows down when another tab is selected or opened or Firefox is minimized.

Posted

Hi. I am using FF33.0 and if I watch Silverlight videos I can't minimize or change the tab without getting sound problems. It sounds like video would slow down and thus distorting the sound.

The sound stops distorting after 30sec-5min after the tab is changed or window minimized. If I change it back to the tab where Silverlight video is playing and the sound is distorting it stops immediately.

I have tried to reset FF and uninstall and re-install.

The problem is limited to FF only. Chrome and IE work fine.

Thank you for any help!

Hi. I am using FF33.0 and if I watch Silverlight videos I can't minimize or change the tab without getting sound problems. It sounds like video would slow down and thus distorting the sound. The sound stops distorting after 30sec-5min after the tab is changed or window minimized. If I change it back to the tab where Silverlight video is playing and the sound is distorting it stops immediately. I have tried to reset FF and uninstall and re-install. The problem is limited to FF only. Chrome and IE work fine. Thank you for any help!

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.67.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Shockwave Flash 15.0 r0
  • Google Update
  • VLC media player Web Plugin 2.1.3
  • Adobe Shockwave for Director Netscape plug-in, version 12.1.3.153
  • 5.1.30514.0
  • iTunes Detector Plug-in

Application

  • Firefox 33.0
  • User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0
  • Support URL: https://support.mozilla.org/1/firefox/33.0/WINNT/en-US/

Extensions

  • Adblock Plus 2.6.4 ({d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d})
  • Disconnect 3.14.0 (2.0@disconnect.me)
  • LastPass 3.1.1 (support@lastpass.com)
  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • WOT 20131030 ({a0d7ccb3-214d-498b-b4aa-0e8fda9a7bf7})

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: Intel(R) HD Graphics 4000
  • adapterDescription2: NVIDIA GeForce GT 630M
  • adapterDeviceID: 0x0166
  • adapterDeviceID2: 0x1140
  • adapterDrivers: igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32
  • adapterDrivers2: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
  • adapterRAM: Unknown
  • adapterRAM2: 2048
  • adapterVendorID: 0x8086
  • adapterVendorID2: 0x10de
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 6.3.9600.17111
  • driverDate: 1-29-2014
  • driverDate2: 9-13-2014
  • driverVersion: 10.18.10.3412
  • driverVersion2: 9.18.13.4411
  • info: {u'AzureCanvasBackend': u'direct2d', u'AzureFallbackCanvasBackend': u'cairo', u'AzureContentBackend': u'direct2d', u'AzureSkiaAccelerated': 0}
  • isGPU2Active: False
  • numAcceleratedWindows: 2
  • numTotalWindows: 2
  • webglRenderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D9Ex vs_3_0 ps_3_0)
  • windowLayerManagerRemote: True
  • windowLayerManagerType: Direct3D 11

Modified Preferences

  • browser.cache.disk.capacity: 358400
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size.use_old_max: False
  • browser.cache.frecency_experiment: 2
  • browser.cache.memory.max_entry_size: 12288
  • browser.cache.use_new_backend: 1
  • browser.display.show_image_placeholders: False
  • browser.places.smartBookmarksVersion: 7
  • browser.sessionstore.restore_on_demand: False
  • browser.sessionstore.upgradeBackup.latestBuildID: 20141011015303
  • browser.startup.homepage_override.buildID: 20141011015303
  • browser.startup.homepage_override.mstone: 33.0
  • browser.tabs.animate: False
  • dom.mozApps.used: True
  • extensions.lastAppVersion: 33.0
  • gfx.direct3d.last_used_feature_level_idx: 0
  • media.gmp-gmpopenh264.lastUpdate: 1413300866
  • media.gmp-gmpopenh264.version: 1.1
  • media.gmp-manager.lastCheck: 1413300865
  • network.cookie.prefsMigrated: True
  • network.http.max-persistent-connections-per-server: 10
  • network.http.pipelining: True
  • network.http.pipelining.max-optimistic-requests: 8
  • places.database.lastMaintenance: 1413300864
  • places.history.expiration.transient_current_max_pages: 104858
  • plugin.disable_full_page_plugin_for_types: application/pdf
  • plugin.importedState: True
  • privacy.donottrackheader.enabled: True
  • privacy.sanitize.migrateFx3Prefs: True
  • storage.vacuum.last.index: 1
  • storage.vacuum.last.places.sqlite: 1411070375

Misc

  • User JS: No
  • Accessibility: No
FredMcD
  • Top 10 Contributor
4230 solutions 59026 answers

Start Firefox in Safe Mode {web link} While you are in safe mode;

Type about:preferences<Enter> in the address bar

Select Advanced > General. Look for and turn off Use Hardware Acceleration.

Poke around safe web sites. Are there any problems?

Then restart.

'''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode]''' {web link} While you are in safe mode; Type '''about:preferences'''<Enter> in the address bar Select '''Advanced > General.''' Look for and turn off '''Use Hardware Acceleration'''. Poke around safe web sites. Are there any problems? Then restart.