Reading this bug report, I think it could be related to the bug #594125.
[linux-image-2.6.35-trunk-amd64] BSD ring buffer implementation makes suspend to ram unreliable -- To UNSUBSCRIBE, email to debian-x-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/201009032043.00028.d...@gnu.org