Git commit 5bd5a45 in Linus' tree "x86: Add NX protection for kernel data" apparently breaks resume on SandyBridge machines. This is supposed to be fixed with commit 691513f "x86: Resume trampoline must be executable", but even git master (v2.6.38-rc1) shows the same symptoms. After suspend to S3, the machine doesn't resume upon wakeup, but boots normally instead. Reverting git commits 691513f, 84e1c6b, and especially 5bd5a45 (trivial except for a single hunk) makes resume work again. lspci -vvv output is attached. (for internal reference: machine NUE874) Matthias -- Matthias Hopf __ __ __ Maxfeldstr. 5 / 90409 Nuernberg (_ | | (_ |__ mat@mshopf.de Phone +49-911-74053-715 __) |_| __) |__ R & D www.mshopf.de