Recentemente quando accendo il computer (sono solito spegnerlo tutte le sere, faccio bene?) la schermata rimane bianca per un tempo lunghissimo, prima che avvenga il caricamento del SO.
Per il resto non noto alcun particolare problema.
Da cosa può dipendere?
Nel caso servisse, riporto le risultanze di EtreCheck
EtreCheck version: 3.4.7 (461)
Report generated 2018-07-18 09:04:01
Download EtreCheck from
https://etrecheck.com
Runtime: 2:24
Performance: Excellent
Click the [Lookup] links for more information from Apple Support Communities.
Click the [Details] links for more information about that line.
Click the [Clean up] link to delete unused files.
Problem: Other problem
Hardware Information: ⓘ
iMac (21.5-inch, Mid 2011)
[Technical Specifications] - [User Guide] - [Warranty & Service]
iMac - model: iMac12,1
1 2,7 GHz Intel Core i5 (i5-2500S) CPU: 4-core
12 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
2 GB DDR3 1333 MHz ok
BANK 1/DIMM0
2 GB DDR3 1333 MHz ok
BANK 0/DIMM1
4 GB DDR3 1333 MHz ok
BANK 1/DIMM1
4 GB DDR3 1333 MHz ok
Handoff/Airdrop2: not supported
Wireless: en1: 802.11 a/b/g/n
iCloud Quota: 637 MB available
Video Information: ⓘ
AMD Radeon HD 6770M - VRAM: 512 MB
iMac 1920 x 1080
Disk Information: ⓘ
WDC WD1001FALS-403AA0 disk1: (1 TB) (Rotational)
[Show SMART report]
EFI (disk1s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB
Macintosh HD (disk1s2 - Journaled HFS+) /Volumes/Macintosh HD : 999.35 GB (451.03 GB free)
Recovery HD (disk1s3 - Journaled HFS+) <not mounted> [Recovery]: 650 MB
CT240BX300SSD1 disk0: (240,06 GB) (Solid State - TRIM: No)
[Show SMART report]
EFI (disk0s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB
(disk0s2) <not mounted> [APFS Container]: 239.85 GB
OPTIARC DVD RW AD-5680H ()
USB Information: ⓘ
USB20Bus
Apple Inc. FaceTime HD Camera (Built-in)
hub_device
Apple, Inc. Keyboard Hub
Apple Inc. Apple Keyboard
Hewlett-Packard HP LaserJet Professional M1212nf MFP
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
USB20Bus
hub_device
Sunplus Innovation Technology. USB to Serial-ATA bridge
00BEVT-16A0RT0 disk3: (500,11 GB)
LC 500Gb (disk3s1 - ExFAT) /Volumes/LC 500Gb : 500.11 GB (7.53 GB free)
USB 2.0 Hub
USB 2.0 Hub
TOSHIBA External USB 3.0
TOSHIBA External USB 3.0
Hewlett-Packard HP Color LaserJet CM2320fxi MFP
TOSHIBA External USB 3.0
External USB 3.0 disk4: (2 TB)
TOSHIBA 2Tb (disk4s1 - ExFAT) /Volumes/TOSHIBA 2Tb : 2.00 TB (1.16 TB free)
Apple Computer, Inc. IR Receiver
Apple Internal Memory Card Reader
Thunderbolt Information: ⓘ
Apple Inc. thunderbolt_bus
Virtual disks: ⓘ
Macintosh SSD (disk2s1 - APFS) / [Startup]: 239.85 GB (195.84 GB free)
Physical disk: disk0s2 239.85 GB (195.84 GB free)
(disk2s2) <not mounted> [Preboot]: 239.85 GB
Physical disk: disk0s2 239.85 GB
(disk2s3) <not mounted> [Recovery]: 239.85 GB
Physical disk: disk0s2 239.85 GB
(disk2s4) /private/var/vm [VM]: 239.85 GB
Physical disk: disk0s2 239.85 GB
System Software: ⓘ
macOS High Sierra 10.13.5 (17F77) - Time since boot: less than an hour
Configuration files: ⓘ
/etc/hosts - Count: 17
Gatekeeper: ⓘ
Mac App Store and identified developers
Clean up: ⓘ
/System/Library/LaunchAgents/com.apple.corespeechd.plist
/System/Library/PrivateFrameworks/CoreSpeech.framework/corespeechd
Executable not found!
One orphan file found. [Clean up]
Kernel Extensions: ⓘ
/System/Library/Extensions
[not loaded] com.devguru.driver.SamsungComposite (1.4.45 - SDK 10.6) [Lookup]
/System/Library/Extensions/ssuddrv.kext/Contents/PlugIns
[not loaded] com.devguru.driver.SamsungACMControl (1.4.45 - SDK 10.6) [Lookup]
[not loaded] com.devguru.driver.SamsungACMData (1.4.45 - SDK 10.6) [Lookup]
[not loaded] com.devguru.driver.SamsungMTP (1.4.45 - SDK 10.5) [Lookup]
[not loaded] com.devguru.driver.SamsungSerial (1.4.45 - SDK 10.6) [Lookup]
[not loaded] com.samsung.driver.ssudumdrv (1.3) [Lookup]
System Launch Agents: ⓘ
[failed] com.apple.corespeechd.plist (? ? ? - installed 2017-11-01) - /System/Library/PrivateFrameworks/CoreSpeech.framework/corespeechd: Executable not found!
[not loaded] 9 Apple tasks
[loaded] 172 Apple tasks
[running] 112 Apple tasks
System Launch Daemons: ⓘ
[not loaded] 35 Apple tasks
[loaded] 180 Apple tasks
[running] 118 Apple tasks
Launch Agents: ⓘ
[loaded] com.google.keystone.agent.plist (Google, Inc. - installed 2018-07-18) [Lookup]
[loaded] com.microsoft.update.agent.plist (Microsoft Corporation - installed 2018-04-20) [Lookup]
[loaded] com.oracle.java.Java-Updater.plist (? ebe1dceb f36eaba4 - installed 2018-04-30) [Lookup]
Launch Daemons: ⓘ
[loaded] com.adobe.fpsaud.plist (Adobe Systems, Inc. - installed 2018-04-29) [Lookup]
[loaded] com.apple.installer.osmessagetracing.plist (Apple, Inc. - installed 2018-05-30)
[loaded] com.google.keystone.daemon.plist (Google, Inc. - installed 2018-07-18) [Lookup]
[loaded] com.microsoft.autoupdate.helper.plist (Microsoft Corporation - installed 2018-04-20) [Lookup]
[loaded] com.oracle.java.Helper-Tool.plist (Shell Script fa56dec8 - installed 2018-03-27) [Lookup]
User Launch Agents: ⓘ
[loaded] com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2018-04-13) [Lookup]
User Login Items: ⓘ
Dropbox Applicazione
(/Applications/Dropbox.app)
Backup e sincronizzazione di Google Applicazione
(/Applications/Backup and Sync.app)
AppCleaner SmartDelete SMLoginItem - Hidden (Julien Ramseier - installed 2016-01-03)
(/Volumes/Macintosh HD/Applications/AppCleaner.app/Contents/Library/LoginItems/AppCleaner SmartDelete.app)
AppCleaner SmartDelete SMLoginItem - Hidden (Julien Ramseier - installed 2017-12-19)
(~/Desktop/UTYLIYIES/AppCleaner disistalla programmi.app/Contents/Library/LoginItems/AppCleaner SmartDelete.app)
AppCleaner SmartDelete SMLoginItem - Hidden (Julien Ramseier - installed 2017-12-19)
(/Volumes/Macintosh HD/Users/[redacted]/Desktop/AppCleaner disistalla programmi.app/Contents/Library/LoginItems/AppCleaner SmartDelete.app)
AppCleaner SmartDelete SMLoginItem - Hidden (Julien Ramseier - installed 2018-05-12)
(/Volumes/Macintosh HD/Users/[redacted]/Library/Mobile Documents/com~apple~CloudDocs/Desktop/UTYLIYIES/AppCleaner disistalla programmi.app/Contents/Library/LoginItems/AppCleaner SmartDelete.app)
Internet Plug-ins: ⓘ
FlashPlayer-10.6: 29.0.0.171 (installed 2018-05-21) [Lookup]
QuickTime Plugin: 7.7.3 (installed 2018-06-13)
Flash Player: 29.0.0.171 (installed 2018-05-21) Outdated! Update
jdk: Unknown (installed 2018-04-30)
o1dbrowserplugin: 5.41.3.0 (installed 2018-01-20) [Lookup]
SharePointBrowserPlugin: 14.4.1 (installed 2017-12-19) [Lookup]
googletalkbrowserplugin: 5.41.3.0 (installed 2015-12-11) [Lookup]
MeetingJoinPlugin: Unknown (installed 2017-12-19) [Lookup]
JavaAppletPlugin: Java 10.0.1 build 10 (installed 2018-04-30) Check version
3rd Party Preference Panes: ⓘ
Flash Player (installed 2018-04-29) [Lookup]
Java (installed 2018-04-30) [Lookup]
Time Machine: ⓘ
Auto backup: YES
Volumes being backed up:
Macintosh SSD: Disk size: 239.85 GB Disk used: 44.01 GB
Destinations:
63 [Local]
Total size: 999.86 GB
Total number of backups: 52
Oldest backup: 24/12/17, 07:22
Last backup: 16/07/18, 00:29
Size of backup disk: Excellent
Backup size 999.86 GB > (Disk size 239.85 GB X 3)
Top Processes by CPU: ⓘ
28% Safari
16% com.apple.WebKit.Networking
11% accountsd
8% com.apple.Safari.SafeBrowsing.Service
7% WindowServer
Top Processes by Memory: ⓘ
1.07 GB kernel_task
270 MB Backup and Sync
233 MB mds_stores
168 MB Dropbox
111 MB Mail
Top Processes by Network Use: ⓘ
Input Output Process name
61 KB 177 KB Dropbox
97 KB 46 KB mDNSResponder
132 KB 2 KB com.apple.Safari.SafeBrowsing.Service
88 KB 16 KB com.apple.WebKit.Networking
79 KB 17 KB Mail
Top Processes by Energy Use: ⓘ
3.64 Safari
3.58 WindowServer
3.12 Mail
2.78 com.apple.WebKit.WebContent
1.66 hidd
Virtual Memory Information: ⓘ
8.08 GB Available RAM
1.69 GB Free RAM
3.92 GB Used RAM
6.39 GB Cached files
0 B Swap Used
Diagnostics Events (last 3 days for minor events): ⓘ
2018-07-18 08:53:33 Last shutdown cause: 3 - Hard shutdown
2018-07-17 18:37:35 com.apple.WebKit.WebContent High CPU use [Open] [Details]
2018-07-16 11:15:02 Backup and Sync.app Crash [Open]
Cause: objc_msgSend() selector name: updatePath:withStatus: