drm-next-kmod panic

[Pete Wright]

On 08/31/2017 01:29, Jakob Alvermark wrote:
> Hello,
>
> Excited about the new graphics/drm-next-kmod port I naturally wanted 
> to try it.
>
> I have tested it on two machines. First, my daily driver, a ThinkPad 
> Yoga 12 (Broadwell)
>
> It is an Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz
>
> Running -CURRENT r322999
>
> I installed drm-next-kmod-g20170829 and when kldloading 
> /boot/modules/drm.ko and then /boot/modules/i915kms.ko
>
> The screen goes blank and system is unresposive (probably panics?), 
> only a power cycle gets it running again.
>

if there is no core in /var/crash you can try adding this sysctl knob 
which may increase the probability of capturing a core for analysis:

dev.drm.skip_ddb=1

one other question - are you able to ssh in to this system after it has 
crashed?

cheers!
-pete

-- 
Pete Wright
pete at nomadlogic.org
@nomadlogicLA