FWIW, on the Nexus 5 I found it on /userdata/system.img
I'm very tempted to up-size the image file and see if I can get a bigger root!

Ha, I had the opposite last night. I was running a (music streaming) web app, closed the tab--and the web app kept running, now with no way to stop the music. Had to close the browser app and restart. :-)

Ok, I got impatient and dug through the UT Tweak tool. Here's a workaround if you're comfortable in a terminal (or, in my case, adb shell):

gsettings get com.canonical.qtmir lifecycle-exempt-appids

For me, this had a value:

['com.ubuntu.music', 'com.ubuntu.terminal']

Then I updated this value:

gsettings set com.canonical.qtmir lifecycle-exempt-appids "['com.ubuntu.music', 'com.ubuntu.terminal', 'morph-browser']"

Voila! My browser is happily running in the background.

The Morph browser is looking really promising for streaming media--it has decent HTML6/ES6 support and its <audio> element handles ogg, mp3, and flac.

But if you change to a different tab, background the browser, or turn off the screen--the whole browser is suspended, making it useless as a media player.

So close, and yet so far.

In the past, the tweak tool could set the browser to not be suspended. As noted on another Morph Browser thread, the tweak tool doesn't "see" this browser.

So... can a UBports wizard suggest how to let the tweak tool see the app? Or name some other way (no matter how grotty) to tell the environment to not SIGSTOP the browser when it's not foreground?

TIA!

But... UI Tweak doesn't appear to know about it! So I can't let it run in BG?

@advocatux, and indeed, no lack of gratitude here for the epic task of catching up with Xenial! Once that one browser glitch goes away, I'm up for trying it as a daily driver. :-)

@advocatux, Webbrowser Next is promising, biggest immediate "gotcha" is that the popup keyboard obscures all but one line of the web page, making it torturous for things which involve completion as you type (or if you need any context at all as you enter text). Any chance somebody could change it to only use, say, half the screen? Thanks!

I looked into this after some comments on this forum, and yes, the phone is just endlessly trying to resolve the (apparently end-of-life'ed) name dash.ubuntu.com. I added a mapping to localhost in /etc/hosts to quiet all those requests. It also asks about daisy.ubuntu.com on a regular basis, so I nipped that one too, and we'll see what breaks. :-)

Is there any way to block a caller (better yet, an entire phone number pattern)? Either in the system or via an app?

If not, consider this a feature request... guess why I woke up at 2AM today. :(

Ok, I've studied the CVE and the patches, and I'm pretty sure I can get this applied for the kernel source net/bluetooth/l2cap_core.c, at least on hammerhead. I can take a similar look if somebody can tell me how to check out the source which includes src/sdpd-request.c.