Intel HD Graphics 4000 - hard lockups

[Jani Nikula]

On Sat, 01 Mar 2014, Daniel Kasak <d.j.kasak.dk at gmail.com> wrote:
> Hi all.
>
> I've had quite a decent run with stability on my laptop, until recently.
> I've been running realtime kernels for audio work, and up to 3.10.6-rt3,
> it's been rock solid. After this, something has gone horribly wrong. I get
> hard lockups from anything later I've built ( 3.12.10-rt15 and 3.12.11-rt17
> ). Sometimes it won't lock up right away, but will pause for a long period,
> and when it starts responding again ( dropping to console, and back into X
> will sometimes free it ) shows a bunch of 'stuck in render loop' / 'render
> ring' ... or something ... kind of errors. I have followed instructions to
> get more info on this if someone wants it.
>
> Chrome seems to trigger lockups more than other things. I run a 3D
> composited desktop ( Enlightenment-0.19 dev builds ), but I've tried with
> Gnome-3.10 and this also gives lockups. I currently have mesa-10.0.3.
>
> What can I do to try to debug this? Often, the magic sysrq keys don't
> respond, but *occasionally* I can at least do an emergency sync.
>
> Switching back to 3.10.6-rt3 makes things *rock* solid, but for various
> reasons, I'd like to get to at least 3.12.x ( other driver issues ).
>
> What's the state of Intel DRM drivers in the kernel? Should I be avoiding
> building from the kernel, and using a git branch? Are there known issues
> with the realtime patches?
>
> Any help appreciated.

I think the first step would be to try vanilla non-rt kernels, maybe a
kernel matching what you've tried, or the latest v3.13 or v3.14-rc's. It
will be easier to proceed from there depending on the outcome.

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center