Desktop Graphics are glitching after waking from sleep

[Guest]

Hello. Can you please help me identify what may cause the graphics errors you see in the attachment (in another post)?

Errors of this sort can take up the entire screen, a band from left to right, or even 2 inch square in a corner. It can occur in stock wallpapers, image folders displayed in a slideshow, or single custom images.

Memtest has been run and shows no errors.

Here is a list of system specs I hope will be helpful.


Kubuntu 14.04


KDE Version 4.13.1


GRand Unified Bootloader (Legacy version)


CPU


Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: AuthenticAMD
CPU family: 16
Model: 4
Stepping: 3
CPU MHz: 3411.593
BogoMIPS: 6823.18
Virtualization: AMD-V
L1d cache: 64K
L1i cache: 64K
L2 cache: 512K
L3 cache: 6144K
NUMA node0 CPU(s): 0-3

01:00.0 VGA compatible controller: NVIDIA Corporation GF100 [GeForce GTX 470] (rev a3) (prog-if 00 [VGA controller])
Subsystem: NVIDIA Corporation Device 079f
Flags: bus master, fast devsel, latency 0, IRQ 78
Memory at fc000000 (32-bit, non-prefetchable) [size=32M]
Memory at d0000000 (64-bit, prefetchable) [size=128M]
Memory at d8000000 (64-bit, prefetchable) [size=64M]
I/O ports at e000 [size=128]
[virtual] Expansion ROM at fe000000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel driver in use: nvidia

[Guest]

Here's the screenshot:

[SteveRiley]

Wow, that's actually pretty neat, heh. I have no idea what's the cause, unfortunately. What's the output of dpkg -l | grep nvidia?