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The screen turning black

  • 5 个回答
  • 4 人有此问题
  • 2 次查看
  • 最后回复者为 cor-el

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Then I close it. I relaunch Firefox and all is ok for a while. Then it turns black. You have asked me to copy information for you:

Application Basics Name Firefox Version 51.0.1 Build ID 20170125094131 Update History Update Channel release User Agent Mozilla/5.0 (Windows NT 10.0; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0 OS Windows_NT 10.0 Profile Folder Enabled Plugins about:plugins Build Configuration about:buildconfig Memory Use about:memory Performance about:performance Registered Service Workers about:serviceworkers Multiprocess Windows 2/2 (Enabled by default) Safe Mode false Profiles about:profiles Crash Reports for the Last 3 Days Report ID Submitted bp-058af58a-f602-44ef-b468-cea072170128 9 hours ago bp-306773e9-5e7c-4a39-ade8-2876f2170128 9 hours ago bp-0c689225-604f-4718-a4c0-d76432170128 9 hours ago bp-5c554f21-4e24-4837-92a8-d31e32170128 9 hours ago bp-cc2c5592-c82a-4d93-b93f-2c5432170128 10 hours ago bp-9b16e9b2-2fc3-43f5-b5e8-f138a2170128 10 hours ago bp-679360c8-34b5-4f40-ac18-68fd42170128 10 hours ago bp-0b19f867-c29c-49e0-a3e3-f25742170128 11 hours ago bp-64a6542c-e8c7-4a04-840d-8d1e12170128 11 hours ago bp-0a84052c-e771-4ddf-b020-0f5b32170128 11 hours ago bp-a5d6b5ab-d9df-4187-97d3-2a2f12170128 11 hours ago bp-26aceee9-9c63-4161-b270-fbac22170128 11 hours ago bp-232abd91-3e61-4a04-9e04-754162170128 12 hours ago bp-3308dbe7-fc66-4357-a952-158692170128 12 hours ago bp-b38737ab-c631-4ab2-81f2-6f51c2170128 12 hours ago bp-115f62c7-79ad-4814-bc3c-232ab2170128 12 hours ago bp-548abb64-2cd4-415d-b2d1-16c192170128 12 hours ago bp-3f4285be-dc0c-4dd5-8a14-3bc952170128 12 hours ago bp-088be94c-4ce8-46bd-84f6-5b1c92170128 12 hours ago bp-8eac7d72-fea8-4fa6-b3c9-64c362170128 12 hours ago bp-c67919b3-322b-4ff2-99c3-ec9e22170128 12 hours ago bp-aabcfb93-53d5-423d-b7ee-5825e2170128 12 hours ago bp-a96295d3-0809-4f39-9c31-72ae02170128 12 hours ago bp-17345fd0-15ce-4fd3-b14f-dc9012170128 12 hours ago bp-dd78a283-a3b4-4368-b9aa-ab1522170128 12 hours ago bp-63c272a0-b0aa-4128-abd9-081e62170128 12 hours ago bp-b650d004-08f7-4f52-90cf-1ea4a2170128 12 hours ago bp-cbeaf638-1646-496e-a1f6-43d232170128 12 hours ago bp-6cc7ccc5-d4f8-4811-9116-75f372170128 12 hours ago bp-efc0eab7-689a-4a6e-93cc-ede652170128 12 hours ago bp-5955c1a2-59e9-4124-b64a-b353e2170128 12 hours ago bp-98001ee5-adc8-425b-a56f-abcd82170128 12 hours ago bp-3b507e7c-f875-4ae0-b3f7-6f2e12170128 12 hours ago bp-96c34d87-8054-4b55-8f53-e26d42170128 12 hours ago

All Crash Reports Extensions Name Version Enabled ID Application Update Service Helper 1.0 true aushelper@mozilla.org Multi-process staged rollout 1.7 true e10srollout@mozilla.org Pocket 1.0.5 true firefox@getpocket.com Web Compat 1.0 true webcompat@mozilla.org Norton Security Toolbar 2016.8.1.9 false {C1A2A613-35F1-4FCF-B27F-2840527B6556} Graphics Features Compositing Direct3D 11 Asynchronous Pan/Zoom wheel input enabled WebGL Renderer Google Inc. -- ANGLE (Intel(R) HD Graphics 4600 Direct3D11 vs_5_0 ps_5_0) WebGL2 Renderer Google Inc. -- ANGLE (Intel(R) HD Graphics 4600 Direct3D11 vs_5_0 ps_5_0) Hardware H264 Decoding Yes; D3D11 blacklisted with DLL igd10iumd32.dll (10.18.15.4248); Using D3D9 API Audio Backend wasapi Direct2D true DirectWrite true (10.0.14393.351) GPU #1 Active Yes Description Intel(R) HD Graphics 4600 Vendor ID 0x8086 Device ID 0x0416 Driver Version 10.18.15.4248 Driver Date 6-29-2015 Drivers igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32 Subsys ID 1966103c RAM Unknown GPU #2 Active No Description NVIDIA GeForce GT 740M Vendor ID 0x10de Device ID 0x1292 Driver Version 21.21.13.6909 Driver Date 8-1-2016 Drivers C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvd3dumx,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2umx,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2umx,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2umx C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvd3dum,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2um,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2um,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2um Subsys ID 219c103c RAM 2048 Diagnostics AzureCanvasAccelerated 0 AzureCanvasBackend direct2d 1.1 AzureContentBackend direct2d 1.1 AzureFallbackCanvasBackend cairo Decision Log D3D9_COMPOSITING disabled by default: Disabled by default Important Modified Preferences Name Value browser.cache.disk.capacity 358400 browser.cache.disk.filesystem_reported 1 browser.cache.disk.hashstats_reported 1 browser.cache.disk.smart_size.first_run false browser.cache.disk.smart_size.use_old_max false browser.cache.frecency_experiment 1 browser.download.importedFromSqlite true browser.places.smartBookmarksVersion 8 browser.search.useDBForOrder true browser.sessionstore.upgradeBackup.latestBuildID 20170125094131 browser.startup.homepage www.yahoo.co.uk browser.startup.homepage_override.buildID 20170125094131 browser.startup.homepage_override.mstone 51.0.1 browser.tabs.remote.autostart.2 true browser.urlbar.daysBeforeHidingSuggestionsPrompt 0 browser.urlbar.lastSuggestionsPromptDate 20160810 dom.apps.lastUpdate.buildID 20161019084923 dom.apps.lastUpdate.mstone 49.0.2 dom.apps.reset-permissions true dom.mozApps.used true dom.push.userAgentID 98e9023ec8064a5384699c890dcd9ef8 extensions.lastAppVersion 51.0.1 font.internaluseonly.changed true font.size.variable.x-western 20 gfx.crash-guard.d3d11layers.appVersion 51.0.1 gfx.crash-guard.d3d11layers.deviceID 0x0416 gfx.crash-guard.d3d11layers.driverVersion 10.18.15.4248 gfx.crash-guard.d3d11layers.feature-d2d true gfx.crash-guard.d3d11layers.feature-d3d11 true gfx.crash-guard.status.d3d11layers 2 gfx.crash-guard.status.d3d9video 2 media.benchmark.vp9.fps 197 media.benchmark.vp9.versioncheck 1 media.gmp-eme-adobe.abi x86-msvc-x64 media.gmp-eme-adobe.lastUpdate 1468259160 media.gmp-eme-adobe.version 17 media.gmp-gmpopenh264.abi x86-msvc-x64 media.gmp-gmpopenh264.lastUpdate 1471506305 media.gmp-gmpopenh264.version 1.6 media.gmp-manager.buildID 20170125094131 media.gmp-manager.lastCheck 1485612142 media.gmp-widevinecdm.abi x86-msvc-x64 media.gmp-widevinecdm.lastUpdate 1474896652 media.gmp-widevinecdm.version 1.4.8.903 media.gmp.storage.version.observed 1 media.hardware-video-decoding.failed false media.webrtc.debug.aec_log_dir C:\Users\Stefano\AppData\Local\Temp media.webrtc.debug.log_file C:\Users\Stefano\AppData\Local\Temp\WebRTC.log network.cookie.prefsMigrated true network.predictor.cleaned-up true places.database.lastMaintenance 1485432790 places.history.expiration.transient_current_max_pages 122334 plugin.disable_full_page_plugin_for_types application/pdf plugin.importedState true print.printer_Samsung_ML-2160_Series_(USB001).print_bgcolor false print.printer_Samsung_ML-2160_Series_(USB001).print_bgimages false print.printer_Samsung_ML-2160_Series_(USB001).print_duplex -437918235 print.printer_Samsung_ML-2160_Series_(USB001).print_edge_bottom 0 print.printer_Samsung_ML-2160_Series_(USB001).print_edge_left 0 print.printer_Samsung_ML-2160_Series_(USB001).print_edge_right 0 print.printer_Samsung_ML-2160_Series_(USB001).print_edge_top 0 print.printer_Samsung_ML-2160_Series_(USB001).print_evenpages true print.printer_Samsung_ML-2160_Series_(USB001).print_footercenter print.printer_Samsung_ML-2160_Series_(USB001).print_footerleft &PT print.printer_Samsung_ML-2160_Series_(USB001).print_footerright &D print.printer_Samsung_ML-2160_Series_(USB001).print_headercenter print.printer_Samsung_ML-2160_Series_(USB001).print_headerleft &T print.printer_Samsung_ML-2160_Series_(USB001).print_headerright &U print.printer_Samsung_ML-2160_Series_(USB001).print_in_color true print.printer_Samsung_ML-2160_Series_(USB001).print_margin_bottom 0.5 print.printer_Samsung_ML-2160_Series_(USB001).print_margin_left 0.5 print.printer_Samsung_ML-2160_Series_(USB001).print_margin_right 0.5 print.printer_Samsung_ML-2160_Series_(USB001).print_margin_top 0.5 print.printer_Samsung_ML-2160_Series_(USB001).print_oddpages true print.printer_Samsung_ML-2160_Series_(USB001).print_orientation 0 print.printer_Samsung_ML-2160_Series_(USB001).print_page_delay 50 print.printer_Samsung_ML-2160_Series_(USB001).print_paper_data 9 print.printer_Samsung_ML-2160_Series_(USB001).print_paper_height 297.00 print.printer_Samsung_ML-2160_Series_(USB001).print_paper_name print.printer_Samsung_ML-2160_Series_(USB001).print_paper_size_unit 1 print.printer_Samsung_ML-2160_Series_(USB001).print_paper_width 210.00 print.printer_Samsung_ML-2160_Series_(USB001).print_resolution 600 print.printer_Samsung_ML-2160_Series_(USB001).print_reversed false print.printer_Samsung_ML-2160_Series_(USB001).print_scaling 1.00 print.printer_Samsung_ML-2160_Series_(USB001).print_shrink_to_fit true print.printer_Samsung_ML-2160_Series_(USB001).print_to_file false print.printer_Samsung_ML-2160_Series_(USB001).print_unwriteable_margin_bottom 0 print.printer_Samsung_ML-2160_Series_(USB001).print_unwriteable_margin_left 0

Then I close it. I relaunch Firefox and all is ok for a while. Then it turns black. You have asked me to copy information for you: Application Basics Name Firefox Version 51.0.1 Build ID 20170125094131 Update History Update Channel release User Agent Mozilla/5.0 (Windows NT 10.0; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0 OS Windows_NT 10.0 Profile Folder Enabled Plugins about:plugins Build Configuration about:buildconfig Memory Use about:memory Performance about:performance Registered Service Workers about:serviceworkers Multiprocess Windows 2/2 (Enabled by default) Safe Mode false Profiles about:profiles Crash Reports for the Last 3 Days Report ID Submitted bp-058af58a-f602-44ef-b468-cea072170128 9 hours ago bp-306773e9-5e7c-4a39-ade8-2876f2170128 9 hours ago bp-0c689225-604f-4718-a4c0-d76432170128 9 hours ago bp-5c554f21-4e24-4837-92a8-d31e32170128 9 hours ago bp-cc2c5592-c82a-4d93-b93f-2c5432170128 10 hours ago bp-9b16e9b2-2fc3-43f5-b5e8-f138a2170128 10 hours ago bp-679360c8-34b5-4f40-ac18-68fd42170128 10 hours ago bp-0b19f867-c29c-49e0-a3e3-f25742170128 11 hours ago bp-64a6542c-e8c7-4a04-840d-8d1e12170128 11 hours ago bp-0a84052c-e771-4ddf-b020-0f5b32170128 11 hours ago bp-a5d6b5ab-d9df-4187-97d3-2a2f12170128 11 hours ago bp-26aceee9-9c63-4161-b270-fbac22170128 11 hours ago bp-232abd91-3e61-4a04-9e04-754162170128 12 hours ago bp-3308dbe7-fc66-4357-a952-158692170128 12 hours ago bp-b38737ab-c631-4ab2-81f2-6f51c2170128 12 hours ago bp-115f62c7-79ad-4814-bc3c-232ab2170128 12 hours ago bp-548abb64-2cd4-415d-b2d1-16c192170128 12 hours ago bp-3f4285be-dc0c-4dd5-8a14-3bc952170128 12 hours ago bp-088be94c-4ce8-46bd-84f6-5b1c92170128 12 hours ago bp-8eac7d72-fea8-4fa6-b3c9-64c362170128 12 hours ago bp-c67919b3-322b-4ff2-99c3-ec9e22170128 12 hours ago bp-aabcfb93-53d5-423d-b7ee-5825e2170128 12 hours ago bp-a96295d3-0809-4f39-9c31-72ae02170128 12 hours ago bp-17345fd0-15ce-4fd3-b14f-dc9012170128 12 hours ago bp-dd78a283-a3b4-4368-b9aa-ab1522170128 12 hours ago bp-63c272a0-b0aa-4128-abd9-081e62170128 12 hours ago bp-b650d004-08f7-4f52-90cf-1ea4a2170128 12 hours ago bp-cbeaf638-1646-496e-a1f6-43d232170128 12 hours ago bp-6cc7ccc5-d4f8-4811-9116-75f372170128 12 hours ago bp-efc0eab7-689a-4a6e-93cc-ede652170128 12 hours ago bp-5955c1a2-59e9-4124-b64a-b353e2170128 12 hours ago bp-98001ee5-adc8-425b-a56f-abcd82170128 12 hours ago bp-3b507e7c-f875-4ae0-b3f7-6f2e12170128 12 hours ago bp-96c34d87-8054-4b55-8f53-e26d42170128 12 hours ago All Crash Reports Extensions Name Version Enabled ID Application Update Service Helper 1.0 true aushelper@mozilla.org Multi-process staged rollout 1.7 true e10srollout@mozilla.org Pocket 1.0.5 true firefox@getpocket.com Web Compat 1.0 true webcompat@mozilla.org Norton Security Toolbar 2016.8.1.9 false {C1A2A613-35F1-4FCF-B27F-2840527B6556} Graphics Features Compositing Direct3D 11 Asynchronous Pan/Zoom wheel input enabled WebGL Renderer Google Inc. -- ANGLE (Intel(R) HD Graphics 4600 Direct3D11 vs_5_0 ps_5_0) WebGL2 Renderer Google Inc. -- ANGLE (Intel(R) HD Graphics 4600 Direct3D11 vs_5_0 ps_5_0) Hardware H264 Decoding Yes; D3D11 blacklisted with DLL igd10iumd32.dll (10.18.15.4248); Using D3D9 API Audio Backend wasapi Direct2D true DirectWrite true (10.0.14393.351) GPU #1 Active Yes Description Intel(R) HD Graphics 4600 Vendor ID 0x8086 Device ID 0x0416 Driver Version 10.18.15.4248 Driver Date 6-29-2015 Drivers igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32 Subsys ID 1966103c RAM Unknown GPU #2 Active No Description NVIDIA GeForce GT 740M Vendor ID 0x10de Device ID 0x1292 Driver Version 21.21.13.6909 Driver Date 8-1-2016 Drivers C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvd3dumx,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2umx,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2umx,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2umx C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvd3dum,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2um,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2um,C:\WINDOWS\System32\DriverStore\FileRepository\nvhmwu.inf_amd64_dbb067faa566eee8\nvwgf2um Subsys ID 219c103c RAM 2048 Diagnostics AzureCanvasAccelerated 0 AzureCanvasBackend direct2d 1.1 AzureContentBackend direct2d 1.1 AzureFallbackCanvasBackend cairo Decision Log D3D9_COMPOSITING disabled by default: Disabled by default Important Modified Preferences Name Value browser.cache.disk.capacity 358400 browser.cache.disk.filesystem_reported 1 browser.cache.disk.hashstats_reported 1 browser.cache.disk.smart_size.first_run false browser.cache.disk.smart_size.use_old_max false browser.cache.frecency_experiment 1 browser.download.importedFromSqlite true browser.places.smartBookmarksVersion 8 browser.search.useDBForOrder true browser.sessionstore.upgradeBackup.latestBuildID 20170125094131 browser.startup.homepage www.yahoo.co.uk browser.startup.homepage_override.buildID 20170125094131 browser.startup.homepage_override.mstone 51.0.1 browser.tabs.remote.autostart.2 true browser.urlbar.daysBeforeHidingSuggestionsPrompt 0 browser.urlbar.lastSuggestionsPromptDate 20160810 dom.apps.lastUpdate.buildID 20161019084923 dom.apps.lastUpdate.mstone 49.0.2 dom.apps.reset-permissions true dom.mozApps.used true dom.push.userAgentID 98e9023ec8064a5384699c890dcd9ef8 extensions.lastAppVersion 51.0.1 font.internaluseonly.changed true font.size.variable.x-western 20 gfx.crash-guard.d3d11layers.appVersion 51.0.1 gfx.crash-guard.d3d11layers.deviceID 0x0416 gfx.crash-guard.d3d11layers.driverVersion 10.18.15.4248 gfx.crash-guard.d3d11layers.feature-d2d true gfx.crash-guard.d3d11layers.feature-d3d11 true gfx.crash-guard.status.d3d11layers 2 gfx.crash-guard.status.d3d9video 2 media.benchmark.vp9.fps 197 media.benchmark.vp9.versioncheck 1 media.gmp-eme-adobe.abi x86-msvc-x64 media.gmp-eme-adobe.lastUpdate 1468259160 media.gmp-eme-adobe.version 17 media.gmp-gmpopenh264.abi x86-msvc-x64 media.gmp-gmpopenh264.lastUpdate 1471506305 media.gmp-gmpopenh264.version 1.6 media.gmp-manager.buildID 20170125094131 media.gmp-manager.lastCheck 1485612142 media.gmp-widevinecdm.abi x86-msvc-x64 media.gmp-widevinecdm.lastUpdate 1474896652 media.gmp-widevinecdm.version 1.4.8.903 media.gmp.storage.version.observed 1 media.hardware-video-decoding.failed false media.webrtc.debug.aec_log_dir C:\Users\Stefano\AppData\Local\Temp media.webrtc.debug.log_file C:\Users\Stefano\AppData\Local\Temp\WebRTC.log network.cookie.prefsMigrated true network.predictor.cleaned-up true places.database.lastMaintenance 1485432790 places.history.expiration.transient_current_max_pages 122334 plugin.disable_full_page_plugin_for_types application/pdf plugin.importedState true print.printer_Samsung_ML-2160_Series_(USB001).print_bgcolor false print.printer_Samsung_ML-2160_Series_(USB001).print_bgimages false print.printer_Samsung_ML-2160_Series_(USB001).print_duplex -437918235 print.printer_Samsung_ML-2160_Series_(USB001).print_edge_bottom 0 print.printer_Samsung_ML-2160_Series_(USB001).print_edge_left 0 print.printer_Samsung_ML-2160_Series_(USB001).print_edge_right 0 print.printer_Samsung_ML-2160_Series_(USB001).print_edge_top 0 print.printer_Samsung_ML-2160_Series_(USB001).print_evenpages true print.printer_Samsung_ML-2160_Series_(USB001).print_footercenter print.printer_Samsung_ML-2160_Series_(USB001).print_footerleft &PT print.printer_Samsung_ML-2160_Series_(USB001).print_footerright &D print.printer_Samsung_ML-2160_Series_(USB001).print_headercenter print.printer_Samsung_ML-2160_Series_(USB001).print_headerleft &T print.printer_Samsung_ML-2160_Series_(USB001).print_headerright &U print.printer_Samsung_ML-2160_Series_(USB001).print_in_color true print.printer_Samsung_ML-2160_Series_(USB001).print_margin_bottom 0.5 print.printer_Samsung_ML-2160_Series_(USB001).print_margin_left 0.5 print.printer_Samsung_ML-2160_Series_(USB001).print_margin_right 0.5 print.printer_Samsung_ML-2160_Series_(USB001).print_margin_top 0.5 print.printer_Samsung_ML-2160_Series_(USB001).print_oddpages true print.printer_Samsung_ML-2160_Series_(USB001).print_orientation 0 print.printer_Samsung_ML-2160_Series_(USB001).print_page_delay 50 print.printer_Samsung_ML-2160_Series_(USB001).print_paper_data 9 print.printer_Samsung_ML-2160_Series_(USB001).print_paper_height 297.00 print.printer_Samsung_ML-2160_Series_(USB001).print_paper_name print.printer_Samsung_ML-2160_Series_(USB001).print_paper_size_unit 1 print.printer_Samsung_ML-2160_Series_(USB001).print_paper_width 210.00 print.printer_Samsung_ML-2160_Series_(USB001).print_resolution 600 print.printer_Samsung_ML-2160_Series_(USB001).print_reversed false print.printer_Samsung_ML-2160_Series_(USB001).print_scaling 1.00 print.printer_Samsung_ML-2160_Series_(USB001).print_shrink_to_fit true print.printer_Samsung_ML-2160_Series_(USB001).print_to_file false print.printer_Samsung_ML-2160_Series_(USB001).print_unwriteable_margin_bottom 0 print.printer_Samsung_ML-2160_Series_(USB001).print_unwriteable_margin_left 0

所有回复 (5)

more options

thank you - not sure if it is related to the black screens, but you have many recent crash reports which got caused by your kaspersky security software that's hooking into firefox - please make sure that it's fully up to date and if that doesn't help please also get in contact with kaspersky's support about that issue.

more options

I have already uninstalled Kaspersky. But the screen turns black

more options

oops, i just noticed that you already asked about the crashes and those were solved

more options

maybe that's an issue with hardware acceleration - please try updating your graphics driver, or in case this doesn't solve the issue or there is no new version available at the moment, disable hardware acceleration in the firefox menu ≡ > options > advanced > general (that setting will take a restart of the browser to take effect).

more options

You can check for problems with preferences.

Delete possible user.js and numbered prefs-##.js files and rename/remove the prefs.js file to reset all prefs to the default value including prefs set via user.js and prefs that are no longer supported in current Firefox releases.

Did you already try Safe Mode?

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • Do NOT click the "Refresh Firefox" button on the Safe Mode start window

Try to disable multi-process tabs in Firefox. You can disable multi-process tabs in Firefox by setting the related prefs to false on the about:config page.

  • browser.tabs.remote.autostart = false
  • browser.tabs.remote.autostart.2 = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.