I'm having the same issue with my new work Dell E4200 with Intel Mobile 4 Series integrated graphics; on resume from hibernate or suspend I get a black X screen with the mouse pointer locked solid.
I can also confirm that the work around of taking CPU1 offline prior to hibernating fixes it (haven't tested suspend yet).
Attached lspci -vvvv output, will attach dmesg and Xorg.0.log in subsequent comments.
I'm having the same issue with my new work Dell E4200 with Intel Mobile 4 Series integrated graphics; on resume from hibernate or suspend I get a black X screen with the mouse pointer locked solid.
I can also confirm that the work around of taking CPU1 offline prior to hibernating fixes it (haven't tested suspend yet).
Attached lspci -vvvv output, will attach dmesg and Xorg.0.log in subsequent comments.