This is strange, there are no changes in CUDA kernels between these two versions. The only change that could affect stability is the smoother transition between normal ming and devfee that was introduced in 2.7a, and it should have the opposite effect. Do you see a connection between the crashes and devfee switches?
i kickstarted 2.7c just now, i'll keep an eye on it.
there's a user reporting something that happened to me also.
2) scrolling the miner to review past output causes the miner to freeze or at least I thing it is. Doing so I get an E at the very last line and after having it sit for a few the normal 'hashing' output does not return, but if I do a Ctrl + C is gives the option to stop the miner without any hitch. Can you explain what's possibly happening?
despite this freeze, miner keeps working, if you check port 3333 on localhost