I have the same issue with an older GTX 970.
The card has always worked fine. The error's started this morning...
I only got two of the error;s tho:
NVRM: GPU 0000:09:00.0: RmInitAdapter failed! (0x26:0xffff:1227)
NVRM: GPU 0000:09:00.0: rm_init_adapter failed, device minor number 0