[drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem.

[Toralf Förster]

On 12/15/2014 08:45 AM, Daniel Vetter wrote:
> Nah, this is just a kernel cmdlineoption. So please boot with
> i915.mmio_debug=1 added to the kernel cmdline, reproduce and then grab the
> entire dmesg.
> 
> Thanks, Daniel

errm, I did it, rebooted, suspended and then the WARNING appeared:

>Dec 12 13:22:13 t44 kernel: ------------[ cut here ]------------
>Dec 12 13:22:13 t44 kernel: WARNING: CPU: 3 PID: 2750 at drivers/gpu/drm/i915/intel_uncore.c:528 hsw_unclaimed_reg_debug.isra.11+0x8d/0xa0 [i915]()


-- 
Toralf
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