drm error in dmesg since using newcons

[Jamie Griffin]

I posted this info in questions@ but got no feedback so thought I should 
post here instead. Details below.

Does anyone know what is causing this error? I'm now using r270438 and 
it happened again on this version too.


info: [drm] capturing error event; look for more information in sysctl 
hw.dri.0.info.i915_error_state
i915: render error detected, EIR: 0x00000010
   IPEIR: 0x00000000
   IPEHR: 0x01000000
   INSTDONE: 0xfffffffe
   INSTPS: 0x0001e000
   INSTDONE1: 0xffffffff
   ACTHD: 0x0320ba08
page table error
   PGTBL_ER: 0x00000002
error: [drm:pid12:i915_report_and_clear_eir] *ERROR* EIR stuck: 
0x00000010, masking

Does anyone know what this is and what I should/could do to fix it?

This system is FreeBSD 10-STABLE r269787 amd64