Created attachment 1062437 [details] about:support information Probably duplicate of https://bugzilla.redhat.com/show_bug.cgi?id=1253086 but I am unable to attach my back traces to existing bugs. Description of problem: Since Firefox 39 I'm experiencing random crashes. With Firefox 40 it seems a lot worse. Version-Release number of selected component (if applicable): 40 How reproducible: Normal browsing (reading pages, changing tabs, watching videos) but very random. I.e. not (easily) reproducible. Steps to acquire back traces: 1. Created new profile 2. Ran firefox in gdb: firefox -g -d gdb -P Bug -safe-mode -no-remote 3. Browsed a while until it crashed and followed steps on https://fedoraproject.org/wiki/Debugging_guidelines_for_Mozilla_products Additional info: Flash or no flash doesn't seem to matter. debuginfo was installed via dnf debuginfo install firefox, but gdm mentioned a lot of additional packages, yet dnf wouldn't install them (for some reason it hanged at the downloading stage). My related mozilla bug reports since 39: https://crash-stats.mozilla.com/report/index/bp-7e4513bb-c873-44e4-9070-f9d472150706 https://crash-stats.mozilla.com/report/index/bp-801deab7-a74a-4d9f-bd41-afc832150706 https://crash-stats.mozilla.com/report/index/bp-fbbef610-cd4a-4d02-877d-cadcf2150707 https://crash-stats.mozilla.com/report/index/bp-8d43de6d-aae8-4571-9c2d-d19642150717 https://crash-stats.mozilla.com/report/index/bp-d1b1c734-8d82-437d-a118-c5ea32150806 https://crash-stats.mozilla.com/report/index/bp-0ce3a64f-95ed-4364-8014-9595c2150806 https://crash-stats.mozilla.com/report/index/bp-efc47a68-18e7-48a2-a779-b93012150806 https://crash-stats.mozilla.com/report/index/bp-6748ad0a-d18d-4b6d-ab37-54c1f2150806 https://crash-stats.mozilla.com/report/index/bp-ec594328-9758-4bc6-b309-9dba32150812 https://crash-stats.mozilla.com/report/index/bp-9d268257-f70e-44f3-bf2a-d70da2150812 https://crash-stats.mozilla.com/report/index/bp-17a9b2bc-64b4-4a72-b573-ee7092150812 https://crash-stats.mozilla.com/report/index/bp-7319e6d8-644f-45b8-8d64-1c8422150813
Created attachment 1062438 [details] back trace 1
Created attachment 1062439 [details] back trace 2
Created attachment 1062441 [details] back trace 3
Created attachment 1062442 [details] back trace 4
Created attachment 1062443 [details] back trace 5
Created attachment 1062444 [details] installed packages
I've browsed a couple of hours on a Sandy Bridge IGP (instead the AMD Bulldozer system with a GTX 650 that was used for the back traces) and haven't had a single crash. I've read that the crashes are supposedly caused by OMTC which I could have had enabled in FF39 myself which explains the pre FF40 crashes. Besides the crashes with nouveau I'm fairly sure it also happened with the Nvidia proprietary driver (but I do not use that as often as nouveau so it could have been something else). The work around of disabling OMTC seems to work and I've now been running a day without a problem (on the AMD Bulldozer system ). I also tried to only disable the layers acceleration but that didn't work nor did the full disabling of hardware acceleration. Since the work around seems to work I'll close this report.