[Bug 90342] GPU hang "stuck on render ring" after resume on broadwell

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90342

--- Comment #7 from Jerome <an.inbox at free.fr> ---
Hi Ander,

Thanks for the feedback. My starting issue is the exact same as Chaskiel, it's
just that I then tried different kernels than him (keeping with Debian, testing
4.0.8 and then unstable 4.1.3) and ended up with the non systematic hard system
lock on resume from suspend. I filled a Debian bug (794393) and was sent
upstream here.

Since then I read the "how to" here indeed, compiled the Intel DRM nightly
kernel yesterday [1], and it looks fine: I went through 20 suspend / resume
cycles without issue (usually I got the lock within 5 resumes typically). So
yes, it looks like it's fixed upstream.

Thanks

[1] Tested with commit fb4572c00fadc1ac94816061e76c65b65607f66a /
    drm-intel-nightly: 2015y-08m-05d-15h-33m-02s UTC integration manifest
    Based on 4.2.0 RC5.

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