Re: Firefox 40 crashes (Was: Will Firefox run on the PI and how stable is it?)

[David Brownlee <abs%netbsd.org@localhost>]

On 19 August 2015 at 09:57, David Brownlee <abs%netbsd.org@localhost> wrote:
> On 18 August 2015 at 22:02, David H. Gutteridge
> <dhgutteridge%sympatico.ca@localhost> wrote:
>> On Tue, 18 Aug 2015 at 13:55:26 +0100 (BST), abs%absd.org@localhost wrote:
>>>David Brownlee wrote:
>>>>On 14 August 2015 at 01:33, Paul Goyette <paul%vps1.whooppee.com@localhost> wrote:
>>>>>
>>>>>FWIW, I recently installed Firefox 40.0 on my amd64 system.  In the
>>>>>past 24 hours, it has crashed twice.  (Once while scrolling through a
>>>>>long page, once overnight while I was sleeping and nothing was
>>>>>happening!)
>>>>>
>>>>>I have not had any time to investigate further, but I might suggest
>>>>>that 40.0 has "stability issues".  :)
>>>>
>>>>I've recently updated to Firefox 40, most recent pkgsrc on most recent
>>>>netbsd-7 amd64 and have noticed it now crashes at unpredictable
>>>>intervals. Possibly more often shortly after opening a new tab but
>>>>that may be anecdotal...
>>>
>>>I got crashes too so rolled back to 39.
>>>
>>>I have a debug build of 40 but couldn't see anything obvious to change.
>>
>> The first thing to try is to set the configuration value
>> layers.offmainthreadcomposition.enabled to false. (It is set to true
>> by default in the pkgsrc build.) This is the new feature listed in
>> the release notes as "Improved scrolling, graphics, and video
>> playback performance with off main thread compositing (GNU/Linux
>> only)". (I don't think it's really "GNU/Linux only" like they say.)
>> There are many reports of Firefox crashing regularly on Linux with
>> this setting enabled. (I'm one of the reporters. After turning that
>> setting off in "about:config", it's now running stably for me. I
>> haven't had a chance to use it heavily in NetBSD yet.)
>
> Thanks for the pointer - testing with
> layers.offmainthreadcomposition.enabled=false now. No crashes yet, but
> too soon to tell :)

I've had one crash under 40.0 with
layers.offmainthreadcomposition.enabled=false, which is significantly
better than before for similar usage.

Have updated to 40.0.2 (still with
offmainthreadcomposition.enabled=false) and waiting to see.