I have a mental note to _never_ allow sleep whilst a VirtualBox guest runs. (I have never, with any version of FreeBSD, successfully woken the computer if a guest ran at sleep time. Always a panic.) HP EliteBook 8570p <https://web.archive.org/web/20150906211950/http://www8.hp.com:80/h20195/v2/GetPDF.aspx/c04163744.pdf> IIRC I had the same problem with a slightly more modern HP EliteBook 850 G2. Crash info to follow.
Created attachment 207687 [details] Preparing to reproduce a panic …
Created attachment 207688 [details] Preparing to reproduce a panic … This photograph didn't capture the xterm window content but the command was: acpiconf -s 3
Created attachment 207689 [details] Overview at the time of the panic
Created attachment 207690 [details] Panic detail: photograph 1 of 5
Created attachment 207691 [details] Panic detail: photograph 2 of 5
Created attachment 207692 [details] Panic detail: photograph 3 of 5
Created attachment 207693 [details] Panic detail: photograph 4 of 5 NB with kernel panics of this type, no dump occurs. > … > (ada0:ahcich0:0:0:0): Error 5, Retries exhausted > …
Created attachment 207694 [details] Panic detail: photograph 5 of 5
*** This bug has been marked as a duplicate of bug 238499 ***