Sleep Indicator Light not pulsating

I noticed that the Sleep Indicator Light of my Mac Pro 2013 does not pulsate anymore during sleep. Does it mean the Mac cannot really sleep anymore? (The displays get not signal though.)

Looking into the Console log, I also noticed one strange thing that even happens during (non-pulsing) sleep: There are lots of WindowServer[220]: VFBGetDeviceTransfer messages, apparently always 8 per second; e.g.

08.06.16 14:42:20,366 WindowServer[220]: VFBGetDeviceTransfer

08.06.16 14:42:20,366 WindowServer[220]: VFBGetDeviceTransfer

08.06.16 14:42:20,366 WindowServer[220]: VFBGetDeviceTransfer

08.06.16 14:42:20,366 WindowServer[220]: VFBGetDeviceTransfer

08.06.16 14:42:20,866 WindowServer[220]: VFBGetDeviceTransfer

08.06.16 14:42:20,866 WindowServer[220]: VFBGetDeviceTransfer

08.06.16 14:42:20,866 WindowServer[220]: VFBGetDeviceTransfer

08.06.16 14:42:20,866 WindowServer[220]: VFBGetDeviceTransfer

EtreCheck version: 2.9.12 (265)

Report generated 2016-06-08 14:19:16

Download EtreCheck from https://etrecheck.com

Runtime 1:31

Performance: Excellent

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Click the [Details] links for more information about that line.

Click the [Check files] link for help with unknown files.

Problem: Other problem

Description:

1. Sleep Indicator Light does not pulsate anymore on Mac sleep

2. multiple „WindowServer: VFBGetDeviceTransfer" per second in Console log

Hardware Information: ⓘ

Mac Pro (Late 2013)

[Technical Specifications] - [User Guide] - [Warranty & Service]

Mac Pro - model: MacPro6,1

1 3,7 GHz Quad-Core Intel Xeon E5 CPU: 4-core

12 GB RAM Upgradeable - [Instructions]

DIMM1

4 GB DDR3 ECC 1866 MHz ok

DIMM2

4 GB DDR3 ECC 1866 MHz ok

DIMM3

4 GB DDR3 ECC 1866 MHz ok

DIMM4

Empty

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: Unknown

Video Information: ⓘ

AMD FirePro D300 - VRAM: 2048 MB

AMD FirePro D300 - VRAM: 2048 MB

VX2475 SERIES 1600 x 900 @ 60 Hz

Panasonic 1600 x 900

System Software: ⓘ

OS X El Capitan 10.11.5 (15F34) - Time since boot: less than an hour

Disk Information: ⓘ

APPLE SSD SM0256F disk0 : (251 GB) (Solid State - TRIM: Yes)

EFI (disk0s1) <not mounted> : 210 MB

Macintosh HD (disk0s2) / : 250.14 GB (106.94 GB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

WDC WD20NPVX-11EA4T0 disk1 : (2 TB) (Rotational)

EFI (disk1s1) <not mounted> : 210 MB

disk1s2 (disk1s2) <not mounted> : 2.00 TB

Boot OS X (disk1s3) <not mounted> : 134 MB

WDC WD20NPVX-11EA4T0 disk3 : (2 TB) (Rotational)

EFI (disk3s1) <not mounted> : 210 MB

disk3s2 (disk3s2) <not mounted> : 2.00 TB

Boot OS X (disk3s3) <not mounted> : 134 MB

USB Information: ⓘ

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller

Samsung Portable SSD T3 2 TB

EFI (disk2s1) <not mounted> : 210 MB

2tb (disk2s2) /Volumes/2tb : 2.00 TB (588.66 GB free)

Elgato EyeTV Hybrid

Thunderbolt Information: ⓘ

Apple Inc. thunderbolt_bus_2

Apple Inc. thunderbolt_bus_1

Apple Inc. thunderbolt_bus_0

Western Digital My Passport Pro

Gatekeeper: ⓘ

Mac App Store and identified developers

Unknown Files: ⓘ

/Library/LaunchDaemons/com.atlassian.jira.plist

/usr/bin/java -Xms512m -Xmx512m -XX:MaxPermSize=300m -Djava.awt.headless=true -classpath /usr/local/jira/bin/bootstrap.jar -Dcatalina.base=/usr/local/jira -Dcatalina.home=/usr/local/jira -Djava.io.tmpdir=/usr/local/jira/temp org.apache.catalina.startup.Bootstrap start

/Library/LaunchDaemons/fix-el-capitan-slow-time-machine-speed.plist

/usr/sbin/sysctl debug.lowpri_throttle_enabled=0

2 unknown files found. [Check files]

Kernel Extensions: ⓘ

/System/Library/Extensions

[not loaded] com.elgato.driver.DontMatchAfaTech (1.1 - 2016-06-04) [Support]

[not loaded] com.elgato.driver.DontMatchCinergy450 (1.1 - 2016-06-04) [Support]

[not loaded] com.elgato.driver.DontMatchCinergyXS (1.1 - 2016-06-04) [Support]

[not loaded] com.elgato.driver.DontMatchEmpia (1.1 - 2016-06-04) [Support]

[not loaded] com.elgato.driver.DontMatchVoyager (1.1 - 2016-06-04) [Support]

[not loaded] com.microsoft.driver.MicrosoftKeyboard (5.3 - 2016-06-04) [Support]

[not loaded] com.microsoft.driver.MicrosoftMouse (5.3 - 2016-06-04) [Support]

[not loaded] com.ni.Fantom.nxtfwdl (1.1.1 - 2016-06-04) [Support]

[not loaded] com.seagate.driver.PowSecDriverCore (5.0.1 - 2016-06-04) [Support]

[not loaded] com.terarecon.volumepro1000 (1.0.0b1 - 2016-06-04) [Support]

/System/Library/Extensions/Seagate Storage Driver.kext/Contents/PlugIns

[not loaded] com.seagate.driver.PowSecLeafDriver_10_4 (5.0.1 - 2011-05-28) [Support]

[not loaded] com.seagate.driver.PowSecLeafDriver_10_5 (5.0.1 - 2011-05-28) [Support]

[not loaded] com.seagate.driver.SeagateDriveIcons (5.0.1 - 2011-05-28) [Support]

System Launch Agents: ⓘ

[not loaded] 9 Apple tasks

[loaded] 152 Apple tasks

[running] 77 Apple tasks

System Launch Daemons: ⓘ

[not loaded] 45 Apple tasks

[loaded] 160 Apple tasks

[running] 87 Apple tasks

Launch Agents: ⓘ

[loaded] com.google.keystone.agent.plist (2016-03-02) [Support]

[loaded] com.oracle.java.Java-Updater.plist (2014-08-01) [Support]

[running] com.seagate.SeagateStorageGauge.plist (2010-03-10) [Support]

[not loaded] com.teamviewer.teamviewer.plist (2015-03-02) [Support]

[not loaded] com.teamviewer.teamviewer_desktop.plist (2015-03-02) [Support]

[loaded] org.macosforge.xquartz.startx.plist (2014-08-11) [Support]

Launch Daemons: ⓘ

[running] com.atlassian.jira.plist (2014-08-08) [Support]

[loaded] com.bresink.system.securityagent3a.plist (2014-08-01) [Support]

[loaded] com.charlessoft.pacifist.helper_10.6.plist (2013-11-09) [Support]

[loaded] com.ea.origin.ESHelper.plist (2016-01-06) [Support]

[running] com.elgato.EyeConnect.plist (2014-02-11) [Support]

[loaded] com.google.keystone.daemon.plist (2016-03-02) [Support]

[loaded] com.oracle.java.Helper-Tool.plist (2014-08-01) [Support]

[loaded] com.skype.skypeinstaller.plist (2016-03-13) [Support]

[running] com.tclementdev.timemachineeditor.scheduler.plist (2016-01-24) [Support]

[loaded] com.teamviewer.Helper.plist (2015-03-02) [Support]

[not loaded] com.teamviewer.teamviewer_service.plist (2015-03-02) [Support]

[loaded] com.wdc.WDPrivilegedHelper.plist (2016-04-06) [Support]

[loaded] fix-el-capitan-slow-time-machine-speed.plist (2016-05-27) [Support]

[loaded] org.macosforge.xquartz.privileged_startx.plist (2014-08-11) [Support]

User Launch Agents: ⓘ

[loaded] com.adobe.ARM.[...].plist (2014-07-31) [Support]

User Login Items: ⓘ

Flux Programm (/Applications/Flux.app)

WDDriveUtilityHelper Programm (/Applications/WD Drive Utilities.app/Contents/WDDriveUtilityHelper.app)

MenuMetersApp Programm (/Library/PreferencePanes/MenuMeters.prefPane/Contents/Resources/MenuMetersApp. app)

WD Quick View Programm (/Library/Application Support/WDSmartware/WDQuickView.app)

Other Apps: ⓘ

[running] com.etresoft.EtreCheck.19552

[loaded] com.joergjacobsen.EyeFriendlyHelper

[running] com.wdc.wdquickview.176352

[running] com.westerndigital.WDDriveUtilityHelper.279712

[running] com.yujitach.MenuMetersApp.289632

[running] org.herf.Flux.59872

[loaded] 407 Apple tasks

[running] 195 Apple tasks

Internet Plug-ins: ⓘ

JavaAppletPlugin: Java 8 Update 91 build 14 (2016-05-10) Check version

QuickTime Plugin: 7.7.3 (2016-05-27)

AdobePDFViewerNPAPI: 11.0.16 - SDK 10.6 (2016-05-11) [Support]

AdobePDFViewer: 11.0.16 - SDK 10.6 (2016-05-11) [Support]

Default Browser: 601 - SDK 10.11 (2016-05-27)

o1dbrowserplugin: 5.41.3.0 - SDK 10.8 (2015-12-16) [Support]

googletalkbrowserplugin: 5.41.3.0 - SDK 10.8 (2015-12-11) [Support]

iPhotoPhotocast: 7.0 (2010-05-12)

3rd Party Preference Panes: ⓘ

Java (2016-05-10) [Support]

MenuMeters (2016-02-13) [Support]

Tuxera NTFS (2015-02-11) [Support]

WDQuickView (2016-04-06) [Support]

Time Machine: ⓘ

Skip System Files: NO

Mobile backups: OFF

Auto backup: NO - Auto backup turned off

Volumes being backed up:

Macintosh HD: Disk size: 250.14 GB Disk used: 143.20 GB

2tb: Disk size: 2.00 TB Disk used: 1.41 TB

Destinations:

Backups [Network]

Total size: 3.00 TB

Total number of backups: 20

Oldest backup: 30.04.16, 02:40

Last backup: 07.06.16, 09:22

Size of backup disk: Too small

Backup size 3.00 TB < (Disk used 1.55 TB X 3)

Top Processes by CPU: ⓘ

15% Console

15% WindowServer

6% kernel_task

5% EyeTV

5% MenuMetersApp(2)

Top Processes by Memory: ⓘ

987 MB kernel_task

627 MB Google Chrome Helper(6)

492 MB WindowServer

442 MB helpd(2)

418 MB Dock(2)

Virtual Memory Information: ⓘ

2.86 GB Free RAM

9.13 GB Used RAM (3.07 GB Cached)

0 B Swap Used

Diagnostics Information: ⓘ

Jun 8, 2016, 02:13:32 PM Self test - passed

Jun 6, 2016, 11:06:32 PM /Library/Logs/DiagnosticReports/Flux_2016-06-06-230632_[redacted].crash

/Applications/Flux.app/Contents/MacOS/Flux

Jun 6, 2016, 01:02:52 PM /Library/Logs/DiagnosticReports/Terminal_2016-06-06-130252_[redacted].hang

UNKNOWN PATH