WLC 5508 reboots itself after upgrading to 7.5.102.0

Hello all.
We have two WLC 5508 and we upgraded both to software release 7.5.102.0 two weeks ago. We also upgrade the FUS to version 1.7.
Since then both WLC reboot randomly once or twice a day with no obvious reason.
Is anyone else facing the same issue?
Many thanks.

Ok, in that case it is very difficult to pin-point the cause for these sorts reboots. It may be due to a unknown bug. Go through below 7.5.102.0 release notes and see any unresolved caveats related to your issue
http://www.cisco.com/en/US/docs/wireless/controller/release/notes/crn75.html#wp1030058
Have you configure syslog on your WLC ?  If so see what is the last syslog message sent by WLC before reloading, it may indicate something.
Do more observation & see whetehr controller reboot every time it hit 1k client limit. Try to narrow down the criteria to identify under what conditions this will trigger.
In my controller I do not have that many clients & cannot comment if it is related.
HTH
Rasika

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    com.apple.driver.AppleIntelCPUPowerManagement 218.0.0
    com.apple.AppleGraphicsDeviceControl 3.8.6
    com.apple.kext.triggers 1.0
    com.apple.iokit.IOSerialFamily 11
    com.apple.driver.DspFuncLib 269.25
    com.apple.kext.OSvKernDSPLib 1.15
    com.apple.nvidia.classic.NVDANV50HalTesla 10.0.0
    com.apple.nvidia.classic.NVDAResmanTesla 10.0.0
    com.apple.iokit.IOSurface 97
    com.apple.iokit.IOFireWireIP 2.2.6
    com.apple.driver.IOPlatformPluginLegacy 1.0.0
    com.apple.driver.AppleHDAController 269.25
    com.apple.iokit.IOHDAFamily 269.25
    com.apple.iokit.IOAudioFamily 203.3
    com.apple.vecLib.kext 1.2.0
    com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.2f6
    com.apple.iokit.IOBluetoothFamily 4.3.2f6
    com.apple.iokit.IOUSBUserClient 705.4.0
    com.apple.driver.AppleSMBusPCI 1.0.12d1
    com.apple.driver.IOPlatformPluginFamily 5.8.1d38
    com.apple.driver.AppleGraphicsControl 3.8.6
    com.apple.driver.AppleBacklightExpert 1.1.0
    com.apple.iokit.IONDRVSupport 2.4.1
    com.apple.driver.AppleSMBusController 1.0.13d1
    com.apple.iokit.IOGraphicsFamily 2.4.1
    com.apple.driver.AppleSMC 3.1.9
    com.apple.driver.AppleUSBMultitouch 245.2
    com.apple.iokit.IOUSBHIDDriver 705.4.0
    com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.3
    com.apple.iokit.IOUSBMassStorageClass 3.7.1
    com.apple.driver.CoreStorage 471.10.6
    com.apple.driver.AppleUSBMergeNub 705.4.0
    com.apple.driver.AppleUSBComposite 705.4.9
    com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.3
    com.apple.iokit.IOBDStorageFamily 1.7
    com.apple.iokit.IODVDStorageFamily 1.7.1
    com.apple.iokit.IOCDStorageFamily 1.7.1
    com.apple.iokit.IOAHCISerialATAPI 2.6.1
    com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.3
    com.apple.iokit.IOEthernetAVBController 1.0.3b3
    com.apple.iokit.IOFireWireFamily 4.5.6
    com.apple.iokit.IO80211Family 710.55
    com.apple.driver.mDNSOffloadUserClient 1.0.1b8
    com.apple.iokit.IONetworkingFamily 3.2
    com.apple.iokit.IOAHCIFamily 2.7.5
    com.apple.iokit.IOUSBFamily 710.4.14
    com.apple.driver.AppleEFINVRAM 2.0
    com.apple.iokit.IOHIDFamily 2.0.0
    com.apple.driver.AppleEFIRuntime 2.0
    com.apple.iokit.IOSMBusFamily 1.1
    com.apple.security.sandbox 300.0
    com.apple.kext.AppleMatch 1.0.0d1
    com.apple.driver.AppleKeyStore 2
    com.apple.driver.AppleMobileFileIntegrity 1.0.5
    com.apple.driver.AppleCredentialManager 1.0
    com.apple.driver.DiskImages 396
    com.apple.iokit.IOStorageFamily 2.0
    com.apple.iokit.IOReportFamily 31
    com.apple.driver.AppleFDEKeyStore 28.30
    com.apple.driver.AppleACPIPlatform 3.1
    com.apple.iokit.IOPCIFamily 2.9
    com.apple.iokit.IOACPIFamily 1.4
    com.apple.kec.Libm 1
    com.apple.kec.pthread 1
    com.apple.kec.corecrypto 1.0

    Just thought I would reply here in case anyone finds this post and has the same problem.
    I downloaded this app: https://gfx.io/  and set my graphics card to "integrated only" and it has solved the problem. Just remember to always set it to "integrated only" if it's not already set to that after anytime you restart your computer.

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