[kde] [Bug 359183] New: Sluggish desktop - nvidia gpu memory leak

[vitoriung via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359183

            Bug ID: 359183
           Summary: Sluggish desktop - nvidia gpu memory leak
           Product: kde
           Version: unspecified
          Platform: Kubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: dualhead
          Assignee: unassigned-bugs at kde.org
          Reporter: vitoriung at gmail.com

The desktop has been very slow after upgrade to Kubuntu 15.10

Found out that Nvidia X server settings reports almost no GPU memory
available(spikes to 100% eventually together with GPU utilization):

 Attribute 'NvidiaDriverVersion' (vpkubuntu:0[gpu:0]): 352.63
 Attribute 'TotalDedicatedGPUMemory' (vpkubuntu:0[gpu:0]): 1020.
 Attribute 'UsedDedicatedGPUMemory' (vpkubuntu:0[gpu:0]): 849.
 Attribute 'GPUUtilization' (vpkubuntu:0[gpu:0]): graphics=9, memory=28,
video=0, PCIe=2

Xrestop:
$xrestop - Display: localhost
          Monitoring 59 clients. XErrors: 29
          Pixmaps:   81084K total, Other:     108K total, All:   81193K total

HW:
GeForce GT610
32GB RAM
 Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz

Reproducible: Always

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