Have you checked the power supply? I don't use a diskless setup but last year (nah, maybe many years ago) I had this strange resume problem after suspend. As in, I'd wake the machine and it'd sit there with a blinking text cursor in text mode, quite stuck. I am pretty sure I posted about it on the list here.
It turned out that when my machine was running the power supply was fine. However, when I suspended it, the 5V rail would bleed voltage. So, I discovered if I resumed within, say, 5 minutes after suspending my machine it would wake normally. After that though, I'd get the blinking cursor and it would hang resuming. I confirmed that the 5V rail was bleeding voltage when in suspend with my voltmeter. It turned out to be bad capacitors in the power supply. Just a suggestion... Dan I appreciate the tip, if I boot off a hard drive on my main desktop it does indeed sleep/resume just fine, and it was the source of every file that got sent to the network when I started converting to diskless, maybe I'll throw in small livedvd install and check again. If it helps, when I'm in LXDE and have just a terminal open with top running, when the screen comes back on, top will update just ONCE before freezing, I can move the mouse cursor, num lock toggles, I can drag the terminal window around, if I try to switch vt2 or anything else like load a previously uncached menu from the taskbar then it never loads or switches. So it's definately (to my eyes at least) I problem with the nfs connection, I don't believe the NIC is powering down as I turned on wake on lan, but I'll test and make sure tonight, and aside from blacklisting kernel modules I have yet to find a way to tweak the resume/suspend functions but I'm still looking for more information when I have free time.
