CUDA being unavailable after a sleep?

I have a mix of Nvidia Maxwell and Kepler GPUs on my main machine, and I’m having an issue with CUDA not being available after a sleep. When the machine wakes up, apps say that CUDA isn’t available, even though nvidia-smi seems normal. This didn’t happen in F35, but it’s happening in F36 at the moment.

The driver in use is the the 470xx series; can’t go any higher because the newer drivers don’t support Kepler.

Has anyone run into this? Thanks.