diff --git a/content/base/test/mochitest.ini b/content/base/test/mochitest.ini
index 659c8757ea6..bc6a6fd310d 100644
--- a/content/base/test/mochitest.ini
+++ b/content/base/test/mochitest.ini
@@ -588,6 +588,7 @@ skip-if = buildapp == 'b2g' || toolkit == 'android' || e10s #bug 775227
 [test_htmlcopyencoder.html]
 [test_htmlcopyencoder.xhtml]
 [test_ipc_messagemanager_blob.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 936226
 [test_meta_viewport0.html]
 [test_meta_viewport1.html]
 [test_meta_viewport2.html]
diff --git a/content/html/content/test/forms/mochitest.ini b/content/html/content/test/forms/mochitest.ini
index 2be29111a0a..5773f5fe9b8 100644
--- a/content/html/content/test/forms/mochitest.ini
+++ b/content/html/content/test/forms/mochitest.ini
@@ -58,6 +58,7 @@ skip-if = (toolkit == 'gonk' && debug) #debug-only failure; bug 926546
 skip-if = buildapp == 'mulet' || (buildapp == 'b2g' && toolkit != 'gonk') #Bug 931116, b2g desktop specific, initial triage
 [test_input_sanitization.html]
 [test_input_textarea_set_value_no_scroll.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_input_typing_sanitization.html]
 skip-if = buildapp == 'mulet'
 [test_input_untrusted_key_events.html]
diff --git a/content/media/test/mochitest.ini b/content/media/test/mochitest.ini
index d7659eea527..5697314c81f 100644
--- a/content/media/test/mochitest.ini
+++ b/content/media/test/mochitest.ini
@@ -306,20 +306,27 @@ skip-if = buildapp == 'b2g' && toolkit != 'gonk' # bug 1082984
 [test_aspectratio_mp4.html]
 [test_audio1.html]
 [test_audio2.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_audioDocumentTitle.html]
 skip-if = true # bug 475110 - disabled since we don't play Wave files standalone
 [test_autoplay.html]
 [test_autoplay_contentEditable.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_buffered.html]
 [test_bug448534.html]
-skip-if = buildapp == 'mulet' || os == 'win' # bug 894922
+skip-if = buildapp == 'mulet' || os == 'win' || (toolkit == 'android' && processor == 'x86') # bug 894922 #x86 only bug 914439
 [test_bug463162.xhtml]
 [test_bug465498.html]
+skip-if = (toolkit == 'android' && processor == 'x86')
 [test_bug493187.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_bug495145.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_bug495300.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_bug654550.html]
 [test_bug686942.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_bug726904.html]
 [test_bug874897.html]
 [test_bug883173.html]
@@ -330,12 +337,13 @@ skip-if = buildapp == 'mulet' || os == 'win' # bug 894922
 [test_bug1018933.html]
 [test_can_play_type.html]
 [test_can_play_type_mpeg.html]
-skip-if = buildapp == 'b2g' # bug 1021675
+skip-if = buildapp == 'b2g' || (toolkit == 'android' && processor == 'x86') # bug 1021675 #x86 only bug 914439
 [test_can_play_type_no_ogg.html]
 [test_can_play_type_ogg.html]
 [test_chaining.html]
 skip-if = toolkit == 'gonk' && debug
 [test_clone_media_element.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_closing_connections.html]
 [test_constants.html]
 [test_contentDuration1.html]
@@ -358,6 +366,7 @@ skip-if = buildapp == 'b2g' || toolkit == 'android' || e10s # bug 1043403, bug 1
 skip-if = toolkit == 'android' # bug 608634
 [test_error_on_404.html]
 [test_fastSeek.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_fastSeek-forwards.html]
 [test_imagecapture.html]
 [test_info_leak.html]
@@ -365,12 +374,18 @@ skip-if = toolkit == 'android' # bug 608634
 [test_invalid_reject_play.html]
 [test_invalid_seek.html]
 [test_load.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_load_candidates.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_load_same_resource.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_load_source.html]
 [test_loop.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_media_selection.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_media_sniffer.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_mediarecorder_avoid_recursion.html]
 [test_mediarecorder_creation.html]
 [test_mediarecorder_creation_fail.html]
@@ -408,18 +423,25 @@ skip-if = true # bug 567954 and intermittent leaks
 [test_mozHasAudio.html]
 [test_networkState.html]
 [test_new_audio.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_no_load_event.html]
 [test_paused.html]
 [test_paused_after_ended.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_play_events.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_play_events_2.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_play_twice.html]
 # Seamonkey: Bug 598252, B2G: Bug 982100, Android: Bug 758476, bug 981086
 skip-if = appname == "seamonkey" || toolkit == 'gonk' || toolkit == 'android'
 [test_playback.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_playback_errors.html]
 [test_playback_rate.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #bug 845162
 [test_playback_rate_playpause.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_played.html]
 skip-if = true # bug 1021794
 [test_preload_actions.html]
@@ -427,15 +449,20 @@ skip-if = true # bug 1021794
 [test_preload_suspend.html]
 skip-if = true # bug 493692
 [test_progress.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_reactivate.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_readyState.html]
 [test_referer.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_replay_metadata.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_reset_events_async.html]
 [test_reset_src.html]
 [test_resume.html]
 skip-if = true # bug 1021673
 [test_seek_out_of_range.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_seek-1.html]
 [test_seek-2.html]
 [test_seek-3.html]
@@ -450,6 +477,7 @@ skip-if = true # bug 1021673
 [test_seek-12.html]
 [test_seek-13.html]
 [test_seekable1.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #timeout x86 only bug 914439
 [test_seekable2.html]
 [test_seekable3.html]
 [test_seekLies.html]
@@ -458,9 +486,12 @@ skip-if = true # bug 1021673
 [test_source_null.html]
 [test_source_write.html]
 [test_standalone.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_streams_autoplay.html]
 [test_streams_element_capture.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_streams_element_capture_createObjectURL.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_streams_element_capture_playback.html]
 [test_streams_element_capture_reset.html]
 [test_streams_gc.html]
@@ -472,10 +503,13 @@ skip-if = buildapp == 'b2g' # bug 1021682
 [test_texttracklist.html]
 [test_texttrackregion.html]
 [test_timeupdate_small_files.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_trackelementevent.html]
 [test_trackevent.html]
 [test_unseekable.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_video_to_canvas.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 914439
 [test_video_in_audio_element.html]
 [test_videoDocumentTitle.html]
 [test_VideoPlaybackQuality.html]
diff --git a/content/media/webaudio/test/mochitest.ini b/content/media/webaudio/test/mochitest.ini
index 2ff0fe4c0f5..e614576e9b1 100644
--- a/content/media/webaudio/test/mochitest.ini
+++ b/content/media/webaudio/test/mochitest.ini
@@ -35,6 +35,7 @@ support-files =
 [test_audioBufferSourceNodeLoopStartEnd.html]
 [test_audioBufferSourceNodeLoopStartEndSame.html]
 [test_audioBufferSourceNodeNeutered.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_audioBufferSourceNodeNoStart.html]
 [test_audioBufferSourceNodeNullBuffer.html]
 [test_audioBufferSourceNodeOffset.html]
diff --git a/docshell/test/navigation/mochitest.ini b/docshell/test/navigation/mochitest.ini
index d31e3c90d43..b7514ba66cb 100644
--- a/docshell/test/navigation/mochitest.ini
+++ b/docshell/test/navigation/mochitest.ini
@@ -38,7 +38,7 @@ skip-if = (buildapp == 'b2g' && (toolkit != 'gonk' || debug)) || toolkit == 'and
 [test_child.html]
 [test_grandchild.html]
 [test_not-opener.html]
-skip-if = buildapp == 'b2g'
+skip-if = buildapp == 'b2g' || (toolkit == 'android' && processor == 'x86') #x86 only
 [test_opener.html]
 skip-if = (buildapp == 'b2g' && toolkit != 'gonk') #Bug 931116, b2g desktop specific, initial triage
 [test_popup-navigates-children.html]
diff --git a/dom/apps/tests/mochitest.ini b/dom/apps/tests/mochitest.ini
index d667f4482ee..99f9d90a59b 100644
--- a/dom/apps/tests/mochitest.ini
+++ b/dom/apps/tests/mochitest.ini
@@ -30,7 +30,9 @@ support-files =
 [test_marketplace_pkg_install.html]
 skip-if = buildapp == "b2g" || toolkit == "android" # see bug 989806
 [test_packaged_app_install.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_packaged_app_update.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_receipt_operations.html]
 [test_signed_pkg_install.html]
 [test_uninstall_errors.html]
diff --git a/dom/browser-element/mochitest/mochitest.ini b/dom/browser-element/mochitest/mochitest.ini
index 9240a713dc5..2c406f60d7f 100644
--- a/dom/browser-element/mochitest/mochitest.ini
+++ b/dom/browser-element/mochitest/mochitest.ini
@@ -153,6 +153,7 @@ disabled = bug 1022281
 [test_browserElement_inproc_FrameWrongURI.html]
 skip-if = (toolkit == 'gonk' && !debug)
 [test_browserElement_inproc_GetScreenshot.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_browserElement_inproc_GetScreenshotDppx.html]
 [test_browserElement_inproc_Iconchange.html]
 [test_browserElement_inproc_KeyEvents.html]
@@ -200,6 +201,7 @@ skip-if = (toolkit == 'gonk' && !debug)
 [test_browserElement_inproc_XFrameOptionsDeny.html]
 [test_browserElement_inproc_XFrameOptionsSameOrigin.html]
 [test_browserElement_oop_NextPaint.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 936226
 # Disabled due to https://bugzilla.mozilla.org/show_bug.cgi?id=774100
 [test_browserElement_inproc_Reload.html]
 disabled = bug 774100
diff --git a/dom/canvas/test/mochitest.ini b/dom/canvas/test/mochitest.ini
index 5f427dbd474..3e6232f7627 100644
--- a/dom/canvas/test/mochitest.ini
+++ b/dom/canvas/test/mochitest.ini
@@ -25,27 +25,49 @@ support-files =
 [test_2d.clearRect.image.offscreen.html]
 [test_2d.clip.winding.html]
 [test_2d.composite.canvas.color-burn.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.color-dodge.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.color.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.darken.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.destination-atop.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.destination-in.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.difference.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.exclusion.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.hard-light.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.hue.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.lighten.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.luminosity.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.multiply.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.overlay.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.saturation.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.screen.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.soft-light.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.source-in.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.canvas.source-out.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.image.destination-atop.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.image.destination-in.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.image.source-in.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.image.source-out.html]
 # xor and lighter aren't well handled by cairo; they mostly work, but we don't want
 # to test that
@@ -112,8 +134,11 @@ skip-if = toolkit != 'cocoa'
 [test_2d.composite.uncovered.fill.destination-atop.html]
 skip-if = toolkit != 'cocoa'
 [test_2d.composite.uncovered.image.destination-in.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.uncovered.image.source-in.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 [test_2d.composite.uncovered.image.source-out.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 913662
 # Tests that fail on non-Mac (bug 407107)
 [test_2d.composite.uncovered.pattern.source-in.html]
 skip-if = toolkit != 'cocoa'
diff --git a/dom/datastore/tests/mochitest.ini b/dom/datastore/tests/mochitest.ini
index 23fb864fc45..24931b18e77 100644
--- a/dom/datastore/tests/mochitest.ini
+++ b/dom/datastore/tests/mochitest.ini
@@ -35,12 +35,15 @@ support-files =
 
 [test_app_install.html]
 [test_readonly.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 936226
 [test_basic.html]
 [test_basic_worker.html]
 [test_changes.html]
 [test_arrays.html]
 [test_oop.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 936226
 [test_sync.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only bug 936226
 [test_sync_worker.html]
 [test_bug924104.html]
 [test_certifiedApp.html]
diff --git a/image/test/mochitest/mochitest.ini b/image/test/mochitest/mochitest.ini
index 0ead0dbecfe..a81a5faaa78 100644
--- a/image/test/mochitest/mochitest.ini
+++ b/image/test/mochitest/mochitest.ini
@@ -66,21 +66,27 @@ support-files =
 # [test_bug478398.html]
 # disabled - See bug 579139
 [test_bug490949.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_bug496292.html]
 [test_bug497665.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_bug512435.html]
 [test_bug552605-1.html]
 [test_bug552605-2.html]
 [test_bug553982.html]
 [test_bug601470.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_bug614392.html]
 [test_bug657191.html]
 [test_bug671906.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_bug733553.html]
 [test_bug767779.html]
 [test_bug865919.html]
 [test_bug89419-1.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_bug89419-2.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_animation_operators.html]
 [test_drawDiscardedImage.html]
 skip-if = toolkit == "gonk" #Bug 997034 - canvas.toDataURL() often causes lost connection to device.
diff --git a/testing/mochitest/androidx86.json b/testing/mochitest/androidx86.json
index 4c73680a796..b061e743397 100644
--- a/testing/mochitest/androidx86.json
+++ b/testing/mochitest/androidx86.json
@@ -1,89 +1,17 @@
 {
 "runtests": {},
 "excludetests": {
-  "content/base/test/test_ipc_messagemanager_blob.html": "x86 only bug 936226",
   "content/base/test/test_copypaste.xul": "bug 904183",
-  "content/html/content/test/forms/test_input_textarea_set_value_no_scroll.html": "x86 only",
-  "content/media/test/test_clone_media_element.html": "x86 only bug 914439",
-  "content/media/test/test_fastSeek.html": "x86 only bug 914439",
-  "content/media/test/test_media_selection.html": "x86 only bug 914439",
-  "content/media/test/test_bug495300.html": "x86 only bug 914439",
-  "content/media/test/test_new_audio.html": "x86 only bug 914439",
   "content/media/test/test_seeked.html": "x86 only bug 914439",
   "content/media/test/test_played.html": "bug 751539",
-  "content/media/test/test_playback_rate.html": "bug 845162",
-  "content/media/test/test_playback_rate_playpause.html": "x86 only bug 914439",
-  "content/media/test/test_loop.html": "x86 only bug 914439",
   "content/media/test/test_play_twice.html": "x86 only bug 914439",
-  "content/media/test/test_bug495145.html": "x86 only bug 914439",
-  "content/media/test/test_bug465498.html": "",
-  "content/media/test/test_play_events_2.html": "x86 only bug 914439",
-  "content/media/test/test_media_sniffer.html": "x86 only bug 914439",
-  "content/media/test/test_seek_out_of_range.html": "x86 only bug 914439",
-  "content/media/test/test_load_same_resource.html": "x86 only bug 914439",
-  "content/media/test/test_bug493187.html": "x86 only bug 914439",
-  "content/media/test/test_autoplay_contentEditable.html": "x86 only",
-  "content/media/test/test_audio2.html": "x86 only bug 914439",
-  "content/media/test/test_can_play_type_mpeg.html": "x86 only bug 914439",
-  "content/media/test/test_bug686942.html": "x86 only bug 914439",
-  "content/media/test/test_standalone.html": "x86 only bug 914439",
-  "content/media/test/test_bug448534.html": "x86 only bug 914439",
-  "content/media/test/test_video_to_canvas.html": "x86 only bug 914439",
-  "content/media/test/test_load_candidates.html": "x86 only bug 914439",
-  "content/media/test/test_streams_element_capture_createObjectURL.html": "x86 only bug 914439",
-  "content/media/test/test_progress.html": "x86 only bug 914439",
-  "content/media/test/test_seekable1.html": "timeout x86 only bug 914439",
-  "content/media/test/test_play_events.html": "x86 only bug 914439",
-  "content/media/test/test_reactivate.html": "x86 only bug 914439",
-  "content/media/test/test_referer.html": "x86 only",
-  "content/media/webaudio/test/test_audioBufferSourceNodeNeutered.html": "x86 only",
-  "content/media/test/test_load.html": "x86 only bug 914439",
-  "content/media/test/test_streams_element_capture.html": "x86 only bug 914439",
-  "content/media/test/test_replay_metadata.html": "x86 only bug 914439",
-  "content/media/test/test_unseekable.html": "x86 only",
-  "content/media/test/test_paused_after_ended.html": "x86 only bug 914439",
-  "content/media/test/test_timeupdate_small_files.html": "x86 only bug 914439",
-  "content/media/test/test_playback.html": "x86 only bug 914439",
-  "docshell/test/navigation/test_not-opener.html": "x86 only",
-  "dom/apps/tests/test_packaged_app_update.html": "x86 only",
-  "dom/apps/tests/test_packaged_app_install.html": "x86 only",
-  "dom/browser-element/mochitest/test_browserElement_oop_NextPaint.html": "x86 only bug 936226",
-  "dom/browser-element/mochitest/test_browserElement_inproc_GetScreenshot.html": "x86 only",
   "dom/browser-element/mochitest/test_browserElement_NoWhitelist.html": "x86 only bug 936226",
   "dom/browser-element/mochitest/test_browserElement_oop_SecurityChange.html": "TIMED_OUT, bug 766586",
   "dom/canvas/test/webgl-conformance": "bug 865443 - separate suite -- mochitest-gl",
-  "dom/canvas/test/test_2d.composite.canvas.luminosity.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.source-in.html": "x86 only bug 913662",
   "dom/canvas/test/test_2d.composite.uncovered.image.destination-atop.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.image.source-in.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.multiply.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.lighten.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.color-dodge.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.destination-in.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.screen.html": "x86 only bug 913662",
   "dom/canvas/test/test_2d.composite.image.source-out.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.exclusion.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.source-out.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.soft-light.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.destination-atop.html": "x86 only bug 913662",
   "dom/canvas/test/test_canvas.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.overlay.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.darken.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.uncovered.image.source-in.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.saturation.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.image.destination-atop.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.uncovered.image.source-out.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.color.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.image.destination-in.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.hue.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.difference.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.color-burn.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.uncovered.image.destination-in.html": "x86 only bug 913662",
-  "dom/canvas/test/test_2d.composite.canvas.hard-light.html": "x86 only bug 913662",
   "dom/contacts/tests/test_contacts_getall.html": "x86 only",
-  "dom/datastore/tests/test_oop.html": "x86 only bug 936226",
-  "dom/datastore/tests/test_sync.html": "x86 only bug 936226",
-  "dom/datastore/tests/test_readonly.html": "x86 only bug 936226",
   "dom/devicestorage": "bug 781789 & bug 782275",
   "dom/imptests/editing/selecttest/test_addRange.html": "bug 775227",
   "dom/imptests/editing/conformancetest/test_runtest.html": "",
@@ -93,18 +21,9 @@
   "dom/tests/mochitest/geolocation/test_timeoutWatch.html": "TIMED_OUT",
   "editor/libeditor/tests/test_bug569988.html": "TIMED_OUT",
   "editor/libeditor/tests/test_texteditor_keyevent_handling.html": "",
-  "Harness_sanity/test_sanityWindowSnapshot.html": "x86 only",
-  "image/test/mochitest/test_bug671906.html": "x86 only",
-  "image/test/mochitest/test_bug89419-2.html": "x86 only",
-  "image/test/mochitest/test_bug490949.html": "x86 only",
-  "image/test/mochitest/test_bug497665.html": "x86 only",
-  "image/test/mochitest/test_bug601470.html": "x86 only",
-  "image/test/mochitest/test_bug89419-1.html": "x86 only",
   "layout/generic": "CRASH_DUMP, RANDOM, ONLY IN CHUNK 10",
-  "MochiKit-1.4.2/tests/test_MochiKit-Async.html": "x86 only",
   "robocop": "TIMED_OUT",
   "toolkit/components/satchel/test/test_form_autocomplete.html": "TIMED_OUT",
-  "toolkit/components/alerts/test/test_alerts_noobserve.html": "x86 only",
   "toolkit/components/places/tests/test_bug_411966.html": "RANDOM",
   "toolkit/components/passwordmgr/test/test_privbrowsing_perwindowpb.html": "",
   "toolkit/content/tests/widgets/test_menubar.xul": "W/SharedBufferStack(21799",
diff --git a/testing/mochitest/tests/Harness_sanity/mochitest.ini b/testing/mochitest/tests/Harness_sanity/mochitest.ini
index 462a50b4549..a5a8e20e701 100644
--- a/testing/mochitest/tests/Harness_sanity/mochitest.ini
+++ b/testing/mochitest/tests/Harness_sanity/mochitest.ini
@@ -7,6 +7,7 @@ skip-if = true #depends on fix for bug 1048446
 [test_sanityException2.html]
 [test_sanityParams.html]
 [test_sanityWindowSnapshot.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_SpecialPowersExtension.html]
 [test_SpecialPowersExtension2.html]
 support-files = file_SpecialPowersFrame1.html
diff --git a/testing/mochitest/tests/MochiKit-1.4.2/tests/mochitest.ini b/testing/mochitest/tests/MochiKit-1.4.2/tests/mochitest.ini
index e5a830fb0b4..da084b3a4fd 100644
--- a/testing/mochitest/tests/MochiKit-1.4.2/tests/mochitest.ini
+++ b/testing/mochitest/tests/MochiKit-1.4.2/tests/mochitest.ini
@@ -13,6 +13,7 @@ support-files =
   test_Signal.js
 
 [test_MochiKit-Async.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_MochiKit-Base.html]
 [test_MochiKit-Color.html]
 [test_MochiKit-DateTime.html]
diff --git a/toolkit/components/alerts/test/mochitest.ini b/toolkit/components/alerts/test/mochitest.ini
index 09e6bf327d2..d83d92c68a3 100644
--- a/toolkit/components/alerts/test/mochitest.ini
+++ b/toolkit/components/alerts/test/mochitest.ini
@@ -6,4 +6,5 @@ skip-if = buildapp == 'b2g' || e10s
 [test_alerts.html]
 skip-if = toolkit == 'android'
 [test_alerts_noobserve.html]
+skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_multiple_alerts.html]