[Bug 97174] Assault Android Cactus freezing on Mesa 12

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97174

--- Comment #6 from blackheart_pro at yahoo.com ---
The conclusion I'm coming to is it's almost certainly some kind of conflict
with Steam; particularly when launching the game through Steam itself. AAC is
DRM free, it doesn't need Steam to run. When I run the game without Steam, I
don't get any hangs at all. That's probably why I can't produce the hang when
running the command mentioned in comment 3. Using apitrace with that command, I
don't believe it launches the game with the full Steam environment. Steam
doesn't appear to be running in the background and I can't shift+tab to get the
overlay. I can't properly record the hang without Steam present, but I'm not
sure how (or if i even can,) use apitrace + ACC with full Steam running as if
launched through the client. This also applies to GALLIUM_DDEBUG=1000 as well.
No hangs and it doesn't produce any files (they're supposed to appear in
/ddebug_dumps/ in the home folder, correct?)

 (In reply to Daniel Scharrer from comment #4)
> Does the game only temporarily freeze and then continue, does it freeze permanently or does the whole system lock up? 

Permanent. Only the game freezes. I can't even kill it when it does freeze,
I've tried everything. Strange that you aren't getting it. Are you using Mesa
12? That's the key here, Mesa 11 series doesn't suffer from this bug at all. 

> you can use the following command to see where it is stuck (you may need to install gdb first):

>gdb --pid `pidof cactus.x86_64` --batch -ex 'info threads' -ex 'thread apply all bt'

gdb is installed by default in Ubuntu 16.04, but seems I can't get this command
to work.

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