upon login, shows corrupt graphics buffer until unity done loading

[Jamison Phillips]

when i login, the graphics appear to change modes to a higher resolution; the login screen becomes smaller and random images and noise show on the right and bottom few inches of the screen. when the desktop is done loading, the graphics work fine.

i would expect to see a beautiful transition upon logging in. the garbage displayed make the OS look bad and can also reveal portions of previously running programs, which is bad for security.

i am using an nvidia hybrid graphics card with the proprietary driver.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: unity-greeter 16.04.2-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40
Uname: Linux 4.4.0-62-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Feb 3 09:59:02 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-03-22 (318 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity-greeter
UpgradeStatus: Upgraded to xenial on 2016-04-25 (284 days ago)

[Jamison Phillips (jamisoncphillips)]

using nvidia binary 370.28 driver, but i've been seeing this for years with ubuntu on different computers.

[johnmne (phi-reporter)]

I've read that odd-numbered versions of Ubuntu (like 'Ubuntu 15.10' which you use) aren't recommended for common users.
It was advised to use an even-numbered versions, like Ubuntu 16.04.