Hi, Greg I found on Debian testing with kernel 4.18.20 fail boot, kernel panic on i915. and reported it to Debian bug 917280 [0], with panic log[1]. after revert: commit 06e562e7f515292ea7721475950f23554214adde Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Date: Mon Nov 5 09:43:05 2018 +0000 drm/i915/ringbuffer: Delay after EMIT_INVALIDATE for gen4/gen5 System boots to desktop. [0]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=917280 [1]: https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=917280;filename=dmesg.txt;msg=10 BR. Ning. _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx