Ciao tutti da qualche giorno il mio iMac presenta questo problema improvvisamente lo schermo diventa nero aspetto una decina di secondi premo un tasto sulla tastiera oppure clicco con il mouse e la schermata si riavvia dopo circa 20-30 secondi nuovamente schermo buio , cosa può essere?
di seguito il report effettuato con Etrececk
EtreCheck version: 3.4.5 (455)
Report generated 2018-04-23 21:11:15
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Runtime: 50:47
Performance: Poor
Click the [Lookup] links for more information from Apple Support Communities.
Click the [Details] links for more information about that line.
Problem: Other problem
Hardware Information: ⓘ
iMac (21.5-inch, Late 2013)
[Technical Specifications] - [User Guide] - [Warranty & Service]
iMac - model: iMac14,1
1 2,7 GHz Intel Core i5 (i5-4570R) CPU: 4-core
8 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
4 GB DDR3 1600 MHz ok
BANK 1/DIMM0
4 GB DDR3 1600 MHz ok
Handoff/Airdrop2: supported
Wireless: en1: 802.11 a/b/g/n/ac
iCloud Quota: 3.05 GB available
iCloud Status: 4 pending files
Video Information: ⓘ
Intel Iris Pro - VRAM: 1536 MB
iMac 1920 x 1080
Disk Information: ⓘ
APPLE HDD HTS541010A9E662 disk0: (1 TB) (Rotational)
[Show SMART report]
EFI (disk0s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB
(disk0s2) <not mounted> [CoreStorage Container]: 999.35 GB
(disk0s3) <not mounted> [Recovery]: 650 MB
USB Information: ⓘ
USB30Bus
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. FaceTime HD Camera (Built-in)
Thunderbolt Information: ⓘ
Apple Inc. thunderbolt_bus
Virtual disks: ⓘ
Macintosh HD (disk1 - Journaled HFS+) / [Startup]: 998.99 GB (853.09 GB free)
Physical disk: disk0s2 999.35 GB Online
System Software: ⓘ
macOS High Sierra 10.13.3 (17D102) - Time since boot: less than an hour
Gatekeeper: ⓘ
Mac App Store and identified developers
Kernel Extensions: ⓘ
/Applications/Capture One.app
[not loaded] com.Leaf.driver.LeafFwXDriverMatcher (1.2.0d1) [Lookup]
/Library/Extensions
[loaded] com.malwarebytes.mbam.rtprotection (3.2 - SDK 10.13) [Lookup]
[loaded] com.paragon-software.filesystems.ntfs (15.1.70 - SDK 10.10) [Lookup]
/System/Library/Extensions
[not loaded] com.tomtom.driver.UsbEthernetGadget (1.0.0d1) [Lookup]
System Launch Agents: ⓘ
[not loaded] 8 Apple tasks
[loaded] 183 Apple tasks
[running] 99 Apple tasks
System Launch Daemons: ⓘ
[not loaded] 36 Apple tasks
[loaded] 189 Apple tasks
[running] 106 Apple tasks
Launch Agents: ⓘ
[not loaded] com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2017-10-06) [Lookup]
[not loaded] com.adobe.AdobeCreativeCloud.plist (Adobe Systems, Inc. - installed 2017-11-14) [Lookup]
[not loaded] com.adobe.GC.Invoker-1.0.plist (Adobe Systems, Inc. - installed 2018-02-03) [Lookup]
[not loaded] com.google.keystone.agent.plist (Google Inc. - installed 2016-01-06) [Lookup]
[running] com.malwarebytes.mbam.frontend.agent.plist (Malwarebytes Corporation - installed 2018-03-28) [Lookup]
[running] com.paragon-software.ntfs.notification-agent.plist (Paragon Software GmbH - installed 2018-04-16) [Lookup]
[not loaded] com.teamviewer.teamviewer.plist (? ? ? - installed 2018-04-23) [Lookup]
[not loaded] com.teamviewer.teamviewer_desktop.plist (TeamViewer GmbH - installed 2018-04-23) [Lookup]
Launch Daemons: ⓘ
[loaded] com.adobe.acc.installer.plist (Adobe Systems, Inc. - installed 2017-11-14) [Lookup]
[running] com.adobe.agsservice.plist (Adobe Systems, Inc. - installed 2018-02-03) [Lookup]
[loaded] com.google.keystone.daemon.plist (Google Inc. - installed 2016-01-06) [Lookup]
[loaded] com.malwarebytes.HelperTool.plist (Malwarebytes Corporation - installed 2017-04-23) [Lookup]
[running] com.malwarebytes.mbam.rtprotection.daemon.plist (Malwarebytes Corporation - installed 2018-03-28) [Lookup]
[running] com.malwarebytes.mbam.settings.daemon.plist (Malwarebytes Corporation - installed 2018-03-28) [Lookup]
[running] com.paragon-software.installer.plist (Paragon Software GmbH - installed 2018-01-17) [Lookup]
[loaded] com.paragon-software.ntfs.loader.plist (Apple, Inc. - installed 2018-01-19)
[running] com.paragon-software.ntfsd.plist (Paragon Software GmbH - installed 2017-12-13) [Lookup]
[loaded] com.teamviewer.Helper.plist (TeamViewer GmbH - installed 2016-01-14) [Lookup]
[running] com.teamviewer.teamviewer_service.plist (? ? ? - installed 2018-04-23) [Lookup]
User Launch Agents: ⓘ
[loaded] com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2017-11-14) [Lookup]
[loaded] com.adobe.GC.Invoker-1.0.plist (Adobe Systems, Inc. - installed 2018-02-07) [Lookup]
Internet Plug-ins: ⓘ
AdobeAAMDetect: 3.0.0.0 (installed 2017-11-14) [Lookup]
QuickTime Plugin: 7.7.3 (installed 2018-03-28)
3rd Party Preference Panes: ⓘ
FUSE for OS X (OSXFUSE) (installed 2016-01-18) [Lookup]
MacFUSE (installed 2016-08-17) [Lookup]
NTFS (installed 2017-12-13) [Lookup]
NTFS-3G (installed 2016-08-17) [Lookup]
Time Machine: ⓘ
Skip System Files: NO
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 998.99 GB Disk used: 145.89 GB
Destinations:
[redacted] [Local]
Total size: 999.86 GB
Total number of backups: 16
Oldest backup: 28/01/17, 11:40
Last backup: 12/01/18, 20:50
Size of backup disk: Adequate
Backup size 999.86 GB > (Disk used 145.89 GB X 3)
Top Processes by CPU: ⓘ
14% cloudd
12% kernel_task
5% mdworker
4% mdworker
4% mdworker
Top Processes by Memory: ⓘ
741 MB kernel_task
123 MB Mail
86 MB mds_stores
82 MB WindowServer
76 MB Finder
Top Processes by Network Use: ⓘ
Input Output Process name
22 KB 2 MB nsurlsessiond
2 MB 6 KB Mail
129 KB 117 KB mDNSResponder
7 KB 5 KB netbiosd
4 KB 3 KB TeamViewer_Service
Top Processes by Energy Use: ⓘ
5.22 WindowServer
4.00 Mail
1.24 bluetoothd
0.78 nsurlsessiond
Virtual Memory Information: ⓘ
5.29 GB Available RAM
98 MB Free RAM
2.71 GB Used RAM
5.20 GB Cached files
0 B Swap Used
Software installs: ⓘ
Malwarebytes for Mac: (installed 2018-03-28)
product: (installed 2018-04-16)
Install information may not be complete.
grazie a tutti
Fabrizio