Created attachment 8768262 [details] Captura de tela de 2016-07-05 22-11-27.png User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0 Build ID: 20160606113944 Steps to reproduce: I opened firefox and then at last I opened youtube. I thought I got hacked, as I thought It was a terminal session doing things. But that doesn't appear to be the case. but what is it? PS. I removed cron and anacron packages because of security issues and I also disabled html5 videos. Maybe a flash thing with firefox? I dont know. Actual results: This black box flashes the screen. Expected results: There should be actually nothing flashing on screen.
Does it happen? 1) in safe mode: https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode 2) with a fresh profile: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles
1) It happens in safe mode. 2) It happens with a fresh profile, when I disable HTML5 Video, within a few videos playing. Aditional info. When the black screen appears, appears the following error: firefox -P 1467857564563 addons.xpi WARN Bootstrap state is invalid (missing add-ons: /firstname.lastname@example.org) Vector smash protection is enabled. (process:20887): GLib-CRITICAL **: g_path_get_basename: assertion 'file_name != NULL' failed The reason I am using flash instead of HTML5 Video is because html5 usually hangs and slows the system.
Let's try Core :: Plug-ins because of the Flash usage. Not clear yet if the bug is in Firefox or Flash itself.
Component: Untriaged → Plug-ins
Product: Firefox → Core
This will likely be fixed when we force Flash to be windowless, but until then we don't have the engineering resources to investigate this.
Priority: -- → P5
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