Comment 11 for bug 643714

For anyone researching a similar problem, here is the way I (the OP) resolved the issue.

After not using this notebook for a while, today I did the following and not suspend and resume works (its been through about 7 cycles without problems).

1) updated ubuntu -> reboot -> same problem (no suspend)
2) updated to new Lenovo bios 1.41 -> reboot -> same problem (no suspend)
3) read Bart's message, create the /etc/pm/config.d/uvcvideo.conf file -> reboot -> same problem (no suspend)
4) (re)added the "blacklist hid_ntrig" line to the bottom of /etc/modprobe.d/blacklist.conf -> rebooted -> problem solved (suspend works)

Way back in the beginning I had tried blacklisting hid_ntrig (which is the touchscreen usb device) but it did not solve the problem. so probably one of the first three steps was also needed to solve the problem.

BTW, I can enable the touchscreen by doing "modprobe hid_ntrig" without rebooting. I find as long as its loaded, suspend is broken. I can, however, turn the touch screen off with "modprobe -r hid_ntrig" and then it will suspend without requiring a reboot.