Firefox keeps crashing on Ubuntu 14.04 even in safe mode

Question

It's been happening for the last two days. There is no particular reason why it happens. The last time it happened was when I was trying to purchase something on Amazon. It just wouldn't let me open that page to complete my purchase.

Add-ons: online-accounts%40lists.launchpad.net:0.5,%7B2e1445b0-2682-11e1-bfc2-0800200c9a66%7D:2014.08.06.beta,ubufox%40ubuntu.com:3.0,%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:39.0,%7Bd10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d%7D:2.6.9.1-signed,langpack-en-GB%40firefox.mozilla.org:39.0,langpack-en-ZA%40firefox.mozilla.org:39.0,webapps-team%40lists.launchpad.net:3.0.2
AsyncPluginInit: 0
BuildID: 20150629114848
CrashTime: 1436864191
EMCheckCompatibility: true
FramePoisonBase: 7ffffffff0dea000
FramePoisonSize: 4096
InstallTime: 1436586661
Notes: OpenGL: Intel Open Source Technology Center -- Mesa DRI Intel(R) Sandybridge Mobile  -- 3.0 Mesa 10.1.3 -- texture_from_pixmap

ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
ProductName: Firefox
ReleaseChannel: release
SecondsSinceLastCrash: 16513
StartupTime: 1436864132
Theme: classic/1.0
Throttleable: 1
URL: about:newtab
Vendor: Mozilla
Version: 39.0
useragent_locale: chrome://global/locale/intl.properties

This report also contains technical information about the state of the application when it crashed.

I tried running it in safe mode, and it crashed again when I tried opening the page. Here is the message I got from the terminal when that crash happened:

firefox -safe-mode

(process:2867): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

(firefox:2867): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect after class was initialised

(firefox:2867): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog after class was initialised

(firefox:2867): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display after class was initialised

(firefox:2867): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon after class was initialised
libva info: VA-API version 0.35.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: va_openDriver() returns -1
Failed to open VDPAU backend libvdpau_i965.so: cannot open shared object file: No such file or directory
NOT SANDBOXED
[fresh] [warning] ppb_var_var_to_utf8, 'var' is not a string, (0)
[fresh  2947] not implemented: PPB_OpenGLES2DrawBuffers(Dev);1.0
[fresh  2947] [PPB] {zilch} ppb_network_monitor_update_network_list
[fresh  2947] [PPB] {zilch} ppb_flash_set_instance_always_on_top instance=11, on_top=1

###!!! [Parent][MessageChannel::Call] Error: Channel error: cannot send/recv


###!!! [Parent][MessageChannel::Call] Error: Channel error: cannot send/recv

I cannot understand what exactly ails Firefox, because the same thing might happen even when I try to open a simple HTML page (my Gmail account, for example). Looking for solutions. Thanks.

Answer 1

You can try this:

mv ~/{.mozilla,mozilla.bak} 
# this command remames ~/.mozzilla (firefox) config folder to mozilla.bak

Or someone had the same error and fixed it by disable hardware acceleration: https://bbs.archlinux.org/viewtopic.php?id=193339

Answer 2

Thanks for your suggestions. I think the problem was with my Flash plugin, and once I turned it off, I have not had Firefox crashing since. This does solve my problem, of course, but only temporarily. I would like to know if there is any fix to this, so that I don't have to turn off my plugin, in order to keep Firefox from crashing.