[17:41] on kernel 3.19 i915 segvs on my macbook...patched in 4.0rc2 but at much degraded performance [17:44] also kernels >3.16 have several patches to sbs(smart battery) for apple that add regressions to older macbooks because of some assumptions by author [17:44] who should i file bugs with [17:50] the sbs causes a race condition which runs cpu load over 100% [17:51] both are present for 15.04