I'm going to introduce nvidia-340 and nvidia-346. At least the former seems to support your GPU: http://us.download.nvidia.com/XFree86/Linux-x86_64/340.76/README/supportedchips.html
That should solve your problem. Sorry for the inconvenience. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers-331-updates in Ubuntu. https://bugs.launchpad.net/bugs/1402423 Title: Security update removes previously working graphics card Status in nvidia-graphics-drivers-331 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-331-updates package in Ubuntu: Confirmed Bug description: The Ubuntu Trusy repositories have version 331.38-0ubuntu7 which is a working driver for the NVIDIA 820M card. trust-security updates the driver to 331.113-0ubuntu0.0.4 which removes the support for the 820M. When attempting to [code]modprobe nvidia-331[/code] with version 331.113 I receive the following message in /var/log/kern.log: Dec 14 12:26:32 mirror kernel: [23225.879952] pci 0000:04:00.0: Refused to change power state, currently in D0 Dec 14 12:30:26 mirror kernel: [23459.429826] NVRM: The NVIDIA GPU 0000:04:00.0 (PCI ID: 10de:1140) Dec 14 12:30:26 mirror kernel: [23459.429826] NVRM: installed in this system is not supported by the 331.113 Dec 14 12:30:26 mirror kernel: [23459.429826] NVRM: NVIDIA Linux driver release. Please see 'Appendix Dec 14 12:30:26 mirror kernel: [23459.429826] NVRM: A - Supported NVIDIA GPU Products' in this release's Dec 14 12:30:26 mirror kernel: [23459.429826] NVRM: README, available on the Linux driver download page Dec 14 12:30:26 mirror kernel: [23459.429826] NVRM: at www.nvidia.com. Dec 14 12:30:26 mirror kernel: [23459.429836] nvidia: probe of 0000:04:00.0 failed with error -1 Dec 14 12:30:26 mirror kernel: [23459.430539] NVRM: The NVIDIA probe routine failed for 1 device(s). Dec 14 12:30:26 mirror kernel: [23459.430541] NVRM: None of the NVIDIA graphics adapters were initialized! Dec 14 12:30:26 mirror kernel: [23459.430542] [drm] Module unloaded Dec 14 12:30:26 mirror kernel: [23459.430630] NVRM: NVIDIA init module failed! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331/+bug/1402423/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

