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I am using Ubuntu 14.04 with the default Firefox 29.0 browser. This used to work fine for me in Ubuntu 12.04 but since I upgraded to Ubuntu 14.04 I am getting this problem that whenever I try to open the page https://www.youtube.com/ (note that this is https), Firefox displays some "looking up" or "contacting" message at the bottom of the screen for an instant and then everything just goes blank. Even the address bar no longer contains the address which I had entered (i.e. https://www.youtube.com/). I then tried installing the Chromium web browser and the behaviour was identical in Chromium too. I then installed the "links" browser and tried to open the secure YouTube site in the terminal and "links" was able to successfully open the site and display the text on the page. Everything else works fine in Firefox, I am able to open other sites including secure pages like https://en.wikipedia.org/. It is only YouTube which is causing this problem. Update: I have found a workaround for this problem. I compared the Wireshark log of packets between my Windows and Ubuntu systems and noticed that the Windows Firefox was using TLS 1.0 and the Ubuntu one was using TLS 1.2. On Ubuntu, the YouTube server successfully completed the TLS 1.2 handshake but sent an RST right after the handshake when my machine tried to send it some "application data". So I went into Firefox's "about:config" and set "security.tls.version.max" to 0 (default was 3). This resolved the problem although I think it's not a proper fix. Either something is wrong with Ubuntu's TLS 1.2 support or with the YouTube server. ** Affects: firefox (Ubuntu) Importance: Undecided Status: New ** Tags: bot-comment -- TLS problem when using Firefox to open secure YouTube page https://bugs.launchpad.net/bugs/1328046 You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp