[Bug 80229] [HSW] hang loading ctx

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80229

--- Comment #58 from dhead666 <myfoolishgames at gmail.com> ---
I'm about two days testing with
i915.semaphores=0 i915.modeset=1 i915.use_mmio_flip=1 i915.enable_ppgtt=1

I didn't had hangs and didn't see the message "stuck on render ring"

I do see high memory consumption by Chromium when opening pages with graphics
until RAM is almost full (4GB) and then the system slowing down until it kills
the gpu process (can't remember the log message) but it doesn't kill chromium
(just the gpu process) and I see the error "The GPU process hung".

I still have unrecoverable full system freezes, it's hard to reproduce it but
it's usually happens with GTK apps (and not for example with Chromium), leave
Gnome (3.12/3.14) desktop visible for a hour, two or a day and it will freeze
in some point, it's also happens on Epiphany, Gedit and other GTK apps.
Frequency can be once a week or 5-6 times a day.
I encountered countless of system freezes, never happened when Chromium open (a
usually it is open constantly) so I'm absolutely sure it got nothing to do with
hardware malfunction and I'm guessing GTK/Clutter triggers a GPU related bug.
Don't have logs as the system don't even send the error message to syslog-ng
and I'm not sure how to debug this further (got a Bus Blaster and Bus Pirate
but I'm not sure where is the JTAG on the my Acer C720 and if it would be much
of help).

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