User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 Build ID: 20170816100207 Steps to reproduce: Open Firefox 57.0A1 in Xubuntu 64-Bit version and run youtube or meneame. Actual results: The content showed is missing as you can see in the screenshot provided. Text is missing, tittles, Javascript buttons are not working. Expected results: Show the content ok as usually. This is not happening in Firefox 57.0A1 in the Android version for instance, nor in Firefox 55 desktop version.

Please update your graphics driver: https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

(In reply to Kohei Yoshino [:kohei] from comment #1) > Please update your graphics driver: > https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware- > acceleration Hello Kohei, first of all appreciate and many thanks for your prompt support. But I'm afraid already running latest proprietary Nvidia driver as you can see in the attached screenshot. Thanks in advance ¡¡ http://storage4.static.itmages.com/i/17/0817/h_1502994390_1373755_e6c3c31eda.png

Hrm, this reminds me of the other bugs on Fedora that I saw. Nical: FYI

Are you by any chane using a flatpak distribution of firefox?

Also, did this work in earlier Firefox versions? Mozregression tool could help find the regression range.

Probably not the volatile buffer problem from bug 1380649, as this is Linux

Hi all, I see today Firefox 57 is finally deployed as stable release.I'm using Xubuntu 17.04 and this problem or bug is still happening on my machine. Nvidia driver is updated so I don't know how to resolve it.

At this point without access to your machine, the most likely thing to help us would be what I mentioned above in comment 5 - running mozregression [1] and seeing what gets identified as the cause of the problem. [1] http://mozilla.github.io/mozregression/quickstart.html

Hello Milan, Yesterday I upgraded my Xubuntu machine from 16.04 to 17.10 so today I'll check if FF57 works properly and feedback here tonight with the results. I could give you remote access over teamviewer or ssh to my machine in case you got some time to check the issue :) just contact me by PM. I also will do what you comment above about mozregression. Finally thanks a lot for your time and quick answering ¡¡

Hello, Today I've installed Firefox from Trunk repository (Firerox Nightly Builds) and I see it works OK. So for now I'll keep using this version waiting for future versions from the Stable repository in order to check if the problem persists or not. Please check these both screen-shots below attached. 1. https://www.flickr.com/gp/24585450@N08/BT1hf8 Firefox Quantum 57.0 Build ID 20171115094513 User Agent Mozilla/5.0 (X11; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 OS Xubuntu 17.10 64-bit Linux 4.13.0-17-generic 2. https://www.flickr.com/gp/24585450@N08/75FLV8 Firefox Nightly 59.0a1 Build ID 20171115134733 User Agent Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0 OS Xubuntu 17.10 64-bit Linux 4.13.0-17-generic Regards ¡¡

If you go to about:config and change the setting "security.sandbox.content.level" to 1, then restart Firefox, does that make any difference?

(In reply to Jonathan Kew (:jfkthame) from comment #11) > If you go to about:config and change the setting > "security.sandbox.content.level" to 1, then restart Firefox, does that make > any difference? Hello Jonathan, As soon as I get home I'll try it. Thank you so much.

(In reply to Jonathan Kew (:jfkthame) from comment #11) > If you go to about:config and change the setting > "security.sandbox.content.level" to 1, then restart Firefox, does that make > any difference? Hi Jonathan, After switch the value from 3 to 1 at about:config ("security.sandbox.content.level") everything is working fine now. Attached below you can find a couple of screen-shots confirming the FIX. 1. https://www.flickr.com/gp/24585450@N08/4778v0 2. https://www.flickr.com/gp/24585450@N08/jj88x0 Thank you very much ¡¡