I'm experiencing issues with the new driver as well, with my SV605CC. I haven't been able to establish the exact pattern, but after reading this thread I think it is related to the issues setting gain. Basically my images are only sometimes coming out with any gain applied, at least that's how it appears.

I checked out the commit before the reimplementation, and everything's working as expected again. The issue is occurring very consistently, so if there's any testing I can do let me know. I did test with the current master commit, it exhibited the same gain-less behavior.

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