Note that the Nvidia packaging does not play well with phased updates. For kernel 519.0-35, the Nvidia 525-76.. driver got removed, but then phasing held back some nvidia 525-85 packages necessary to rebuild the nvidia modules -- leaving the currently running kernel without an Nvidia driver. A day later the phasing caught up, all the Nvidia packages downloaded, and the modules rebuilt successfully.
Note that the Nvidia packaging does not play well with phased updates. For kernel 519.0-35, the Nvidia 525-76.. driver got removed, but then phasing held back some nvidia 525-85 packages necessary to rebuild the nvidia modules -- leaving the currently running kernel without an Nvidia driver. A day later the phasing caught up, all the Nvidia packages downloaded, and the modules rebuilt successfully.