X61 Tablet Pen does not work after Resume from Sleep

I've tried three builds on my X61 Tablet - 7000, 7057, and 7068. 7000 suffered from the usual explorer crashes, but 7057 and 7068 were significantly improved in that respect.

But with both builds 7057 and 7068, whenever I put my computer to sleep and then later wake it up, the digitizer/pen as well as the touchscreen both stop working and do not work again until after restarting the computer.

Anyone else have this issue?

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