random blue screen with i9300

I have install 12.1 ([5.1.1] [Build 14] [BETA] [2015-08-25] CyanogenMod 12.1 for i9300), everything work very well but I have random blue screen with i9300 (also with rom stock).
The arter97's kernel offer improvements than kernel inside in that image?
i think that last blob for mali included in arter97's kernel can help me...

thank you very much!