On Thu, 12 Sep 2019 02:07:01 +0000 (UTC), bob prohaska
 wrote:

> Is anybody observing lockups on Raspberry Pi 3 with
> chromium? It seems to happen most often when dragging
> maps or images. The machine is at
> 4.19.66-v7+ #1253 SMP Thu Aug 15 11:49:46 BST 2019 armv7l
> (latest Stretch available via apt-get).
>
> On a few occasions the machine has crashed out of X and
> shown an out of memory error, but most of the time it
> simply stops responding. I am using the experimental GL
> desktop, the standard one is too slow to be useful. The
> problem appeared a couple of months ago and shows no sign
> of abating.

My first itch would be the pi is suffering under-voltage when it
is very busy.
Check with:
 vcgencmd get_throttled
or keep an eye on the yellow lightning bolt.

https://github.com/raspberrypi/documentation/blob/JamesH65-patch-vcgencmd-vcdbg
-docs/raspbian/applications/vcgencmd.md

But of course it could be something else.
--
Regards,
Kees Nuyt

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