Q: 27" imac late 2009 freezing

BTW, here you have the etrecheck test as of today:

EtreCheck version: 2.9.13 (267)

Report generated 2016-07-24 19:35:30

Download EtreCheck from https://etrecheck.com

Runtime 0:56

Performance: Excellent

Click the [Support] links for help with non-Apple products.

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

Problem: Other problem

Hardware Information: ⓘ

    iMac (27-inch, Late 2009)

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

    iMac - model: iMac11,1

    1 2.8 GHz Intel Core i7 CPU: 4-core

    16 GB RAM

        BANK 0/DIMM0

            8 GB DDR3 1067 MHz ok

        BANK 1/DIMM0

            8 GB DDR3 1067 MHz ok

        BANK 0/DIMM1

            Empty  

        BANK 1/DIMM1

            Empty  

    Bluetooth: Old - Handoff/Airdrop2 not supported

    Wireless:  en1: 802.11 a/b/g/n

Video Information: ⓘ

    ATI Radeon HD 4850 - VRAM: 512 MB

        iMac 2560 x 1440

        spdisplays_display_connector

System Software: ⓘ

    OS X Snow Leopard 10.6.2 (10C2234) - Time since boot: less than an hour

Disk Information: ⓘ

    ST1000DM003-1SB10C disk0 : (931,51 GB) ()

        Macintosh (disk0s2) / : 999.86 GB (992.17 GB free)

    OPTIARC DVD RW AD-5680H   ()

USB Information: ⓘ

    PIXART USB OPTICAL MOUSE

    JetFlash Mass Storage Device 7,28 GB

        Mac OS X Install DVD (disk1s2) /Volumes/Mac OS X Install DVD : 7.47 GB (654 MB free)

    Apple Computer, Inc. IR Receiver

    Apple Inc. Built-in iSight

    Apple Internal Memory Card Reader

    Apple Inc. BRCM2046 Hub

        Apple Inc. Bluetooth USB Host Controller

System Launch Agents: ⓘ

    [not loaded]    3 Apple tasks

    [loaded]    58 Apple tasks

    [running]    7 Apple tasks

System Launch Daemons: ⓘ

    [not loaded]    51 Apple tasks

    [loaded]    80 Apple tasks

    [running]    28 Apple tasks

Other Apps: ⓘ

    [running]    [0x0-0x34034].com.etresoft.EtreCheck

    [loaded]    201 Apple tasks

    [running]    49 Apple tasks

Internet Plug-ins: ⓘ

    QuickTime Plugin: 7.6.3 (2016-07-24)

    Flash Player: 10.0.32 (2016-07-24) Outdated! Update

Audio Plug-ins: ⓘ

    iSightAudio: 7.6.3 (2016-07-24)

3rd Party Preference Panes: ⓘ

    None

Time Machine: ⓘ

    Time Machine information requires OS X 10.8 "Mountain Lion" or later.

Top Processes by CPU: ⓘ

         4%    WindowServer

         1%    Dock

         0%    fontd

         0%    Safari

         0%    Finder

Top Processes by Memory: ⓘ

    279 MB    Safari

    98 MB    mds

    49 MB    WindowServer

    33 MB    Dock

    33 MB    Finder

Virtual Memory Information: ⓘ

    13.00 GB    Free RAM

    2.96 GB    Used RAM

    0 B    Swap Used

Diagnostics Information: ⓘ

    Jul 24, 2016, 07:16:41 PM    ~/Library/Logs/DiagnosticReports/Safari_2016-07-24-191641_[redacted].crash

        com.apple.Safari - /Applications/Safari.app/Contents/MacOS/Safari

    Jul 24, 2016, 06:47:19 PM    Self test - passed

Hello Etresoft,

Thanks for your answer. I am now with OS X Snow Leopard 10.6.2 running on the main HD, which I have formatted from scratch. Above you can see the etrecheck log for that configuration.

What I did before making a new clean install in the main HD, was to install El Capitan on a 64GB USB memory to check if the internal hard drive was the source of the problem. So far (but only 30 min of use), the system is stable. Below is the log of etrechek under "no problem" analysis:

EtreCheck version: 2.9.13 (267)

Report generated 2016-07-26 22:01:22

Download EtreCheck from https://etrecheck.com

Runtime 2:05

Performance: Excellent

Click the [Support] links for help with non-Apple products.

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

Problem: No problem - just checking

Hardware Information: ⓘ

    iMac (27-inch, Late 2009)

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

    iMac - model: iMac11,1

    1 2,8 GHz Intel Core i7 CPU: 4-core

    16 GB RAM Upgradeable - [Instructions]

        BANK 0/DIMM0

            8 GB DDR3 1067 MHz ok

        BANK 1/DIMM0

            8 GB DDR3 1067 MHz ok

        BANK 0/DIMM1

            Empty  

        BANK 1/DIMM1

            Empty  

    Bluetooth: Old - Handoff/Airdrop2 not supported

    Wireless:  en1: 802.11 a/b/g/n

Video Information: ⓘ

    ATI Radeon HD 4850 - VRAM: 512 MB

        iMac 2560 x 1440

System Software: ⓘ

    OS X El Capitan 10.11.3 (15D21) - Time since boot: less than an hour

Disk Information: ⓘ

    ST1000DM003-1SB10C disk0 : (1 TB) (Rotational)

        EFI (disk0s1) <not mounted> : 210 MB

        Macintosh (disk0s2) /Volumes/Macintosh : 999.86 GB (993.04 GB free)

    OPTIARC DVD RW AD-5680H   ()

USB Information: ⓘ

    Apple Card Reader

    Apple Inc. BRCM2046 Hub

        Apple Inc. Bluetooth USB Host Controller

    PIXART USB OPTICAL MOUSE

    Lexar USB Flash Drive 64,02 GB

        EFI (disk1s1) <not mounted> : 210 MB

        Untitled (disk1s2) / : 63.16 GB (52.56 GB free)

        Recovery HD (disk1s3) <not mounted>  [Recovery]: 650 MB

    Apple Computer, Inc. IR Receiver

    Apple Inc. Built-in iSight

Gatekeeper: ⓘ

    Mac App Store and identified developers

System Launch Agents: ⓘ

    [not loaded]    5 Apple tasks

    [loaded]    167 Apple tasks

    [running]    64 Apple tasks

System Launch Daemons: ⓘ

    [not loaded]    46 Apple tasks

    [loaded]    159 Apple tasks

    [running]    82 Apple tasks

Other Apps: ⓘ

    [loaded]    401 Apple tasks

    [running]    158 Apple tasks

Internet Plug-ins: ⓘ

    Default Browser: 601 - SDK 10.11 (2016-01-14)

    QuickTime Plugin: 7.7.3 (2016-01-14)

3rd Party Preference Panes: ⓘ

    None

Time Machine: ⓘ

    Time Machine not configured!

Top Processes by CPU: ⓘ

         2%    fontd

         1%    com.apple.WebKit.WebContent

         1%    kernel_task

         0%    WindowServer

         0%    mdworker(4)

Top Processes by Memory: ⓘ

    674 MB    kernel_task

    131 MB    softwareupdated

    98 MB    com.apple.WebKit.WebContent

    98 MB    mdworker(6)

    66 MB    mds_stores

Virtual Memory Information: ⓘ

    13.00 GB    Free RAM

    2.71 GB    Used RAM (1.74 GB Cached)

    0 B    Swap Used

Diagnostics Information: ⓘ

    Jul 26, 2016, 09:54:19 PM    Self test - passed

Do you see any trouble in the log? I will keep using it for testing purposes and see if it crashes.

Best,

J.

Hello again Linc,

I am now with OS X Snow Leopard 10.6.2 running on the main HD, which I have formatted from scratch and installed from the original dvd.

Then, I made a new install of El Capitan on a 64GB USB memory to check if the internal hard drive was the source of the problem. So far (but only 30 min of use), the system is stable. I have passed the etrecheck test and your script. Here are the results of your script, in case you notice the same problem with the graphic card:

   1  Start time: 22:17:16 07/26/16

   2 

   3  Revision: 1628

   4 

   5  Model Identifier: iMac11,1

   6  Boot ROM Version: IM111.0034.B04

   7  System Version: OS X 10.11.3 (15D21)

   8  Kernel Version: Darwin 15.3.0

   9  Time since boot: 23 minutes

  10 

  11  SerialATA

  12 

  13      ST1000DM003-1SB10C                     

  14 

  15  USB

  16 

  17      USB OPTICAL MOUSE (Pixart Imaging, Inc.)

  18      USB Flash Drive (Lexar Media, Inc.)

  19 

  20  Bluetooth

  21 

  22      Apple Wireless Keyboard

  23 

  24  Energy impact, lifetime (relative)

  25 

  26      Terminal (UID 501): 36.54

  27      bash (UID 501): 31.64

  28 

  29  CPU usage, lifetime (ms/s)

  30 

  31      Terminal (UID 501): 371.36

  32      bash (UID 501): 317.28

  33 

  34  LS schemes: No

  35 

  36  DNS: 80.58.61.250

  37 

  38  Kernel log

  39 

  40      Jul 25 22:21:57 000001.410245 StandardUSB::validateEndpointMaxPacketSize: USB 2.0 5.[5|7].3: endpoint 0x00 invalid wMaxPacketSize 0x0040

  41      Jul 25 22:22:13 IO80211ControllerMonitor::configureSubscriptions() failed to add subscriptionIO80211Controller::start _controller is 0x285e770307d891e5, provider is 0x285e7701886489e5

  42      Jul 25 22:22:15 init: error getting PHY_MODE;  using MODE_UNKNOWN

  43      Jul 25 22:24:09 considerRebuildOfPrelinkedKernel com.apple.kext.triggers triggered rebuild

  44      Jul 26 21:55:03 IO80211ControllerMonitor::configureSubscriptions() failed to add subscriptionIO80211Controller::start _controller is 0x57171eb4e5fc41e7, provider is 0x57171eb366b4c5e7

  45      Jul 26 21:55:03 init: error getting PHY_MODE;  using MODE_UNKNOWN

  46 

  47  System log

  48 

  49      Jul 26 21:58:16 SpotlightNetHelper: tcp_connection_tls_session_error_callback_imp 13 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22

  50      Jul 26 21:58:16 SpotlightNetHelper: tcp_connection_tls_session_error_callback_imp 12 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22

  51      Jul 26 21:58:16 SpotlightNetHelper: tcp_connection_tls_session_error_callback_imp 8 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22

  52      Jul 26 21:58:16 SpotlightNetHelper: tcp_connection_tls_session_error_callback_imp 17 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22

  53      Jul 26 21:58:16 SpotlightNetHelper: tcp_connection_tls_session_error_callback_imp 11 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22

  54      Jul 26 22:00:17 WindowServer: _CGXRemoveWindowFromWindowMovementGroup: window 0x33 is not attached to window 0x34

  55      Jul 26 22:00:17 Safari: tcp_connection_tls_session_error_callback_imp 27 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22

  56      Jul 26 22:00:46 Safari: tcp_connection_tls_session_error_callback_imp 23 __tcp_connection_tls_session_callback_write_block_invoke.434 error 32

  57      Jul 26 22:00:46 Safari: tcp_connection_tls_session_error_callback_imp 22 __tcp_connection_tls_session_callback_write_block_invoke.434 error 32

  58      Jul 26 22:00:46 Safari: tcp_connection_tls_session_error_callback_imp 26 __tcp_connection_tls_session_callback_write_block_invoke.434 error 32

  59      Jul 26 22:00:46 Safari: tcp_connection_tls_session_error_callback_imp 24 __tcp_connection_tls_session_callback_write_block_invoke.434 error 32

  60      Jul 26 22:03:30 AppleSpell: Lexicon creation failed: Lexicon resources not found

  61      Jul 26 22:12:18 Safari: tcp_connection_tls_session_error_callback_imp 34 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22

  62      Jul 26 22:12:42 deleted: normalizeUserMountpoint:736 volRoot failed for /Volumes/Macintosh

  63      Jul 26 22:12:42 deleted: _validateVolume:758 unable to normalize volume: "/Volumes/Macintosh", vol: (null)

  64      Jul 26 22:13:05 fseventsd: Events arrived for /Volumes/Macintosh after an unmount request! Re-initializing.

  65      Jul 26 22:13:05 fseventsd: creating a dls for /Volumes/Macintosh but it already has one...

  66      Jul 26 22:13:06 deleted: normalizeUserMountpoint:736 volRoot failed for /Volumes/Macintosh

  67      Jul 26 22:13:06 deleted: _validateVolume:758 unable to normalize volume: "/Volumes/Macintosh", vol: (null)

  68      Jul 26 22:13:07 fseventsd: disk logger: failed to open output file /Volumes/Macintosh/.fseventsd/00000000002f4af9 (No such file or directory). mount point /Volumes/Macintosh/.fseventsd

  69      Jul 26 22:13:07 fseventsd: disk logger: failed to open output file /Volumes/Macintosh/.fseventsd/00000000002f4af9 (No such file or directory). mount point /Volumes/Macintosh/.fseventsd

  70      Jul 26 22:17:05 SpotlightNetHelper: tcp_connection_tls_session_error_callback_imp 21 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22

  71      Jul 26 22:17:05 SpotlightNetHelper: tcp_connection_tls_session_error_callback_imp 20 __tcp_connection_tls_session_callback_write_block_invoke.434 error 22

  72      Jul 26 22:17:21 SubmitDiagInfo: Couldn't load config file from on-disk location. Falling back to default location. Reason: Won't serialize in _readDictionaryFromJSONData due to nil object

  73      Jul 26 22:17:21 SubmitDiagInfo: Couldn't load config file from on-disk location. Falling back to default location. Reason: Won't serialize in _readDictionaryFromJSONData due to nil object

  74 

  75  launchd log

  76 

  77      Jul 25 22:21:57 com.apple.airplaydiagnostics.server: Unrecognized MachService property: ResetAtClose

  78      Jul 25 22:22:34 com.apple.xpc.launchd.user.domain.248.100007.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.CommCenter-osx.plist, caller = loginwindow.71, error = 138: Service cannot be loaded on this hardware

  79      Jul 25 22:45:48 com.apple.xpc.launchd.user.domain.501.100015.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.CommCenter-osx.plist, caller = loginwindow.371, error = 138: Service cannot be loaded on this hardware

  80      Jul 26 21:55:01 com.apple.airplaydiagnostics.server: Unrecognized MachService property: ResetAtClose

  81      Jul 26 21:55:21 com.apple.xpc.launchd.user.domain.501.100009.Aqua: Could not import service from caller: path = /System/Library/LaunchAgents/com.apple.CommCenter-osx.plist, caller = loginwindow.84, error = 138: Service cannot be loaded on this hardware

  82 

  83  Console log

  84 

  85      Jul 25 22:46:41 fontd: Failed to open read-only database, regenerating DB

  86 

  87  System services loaded

  88 

  89      com.apple.logd

  90      - status: 1

  91      com.apple.watchdogd

  92 

  93  iCloud errors

  94 

  95      cloudphotosd 5

  96      cloudd 3

  97      comapple.InputMethodKit.TextReplacementService 1

  98      comapple.CloudPhotosConfiguration 1

  99      Finder 1

100 

101  Continuity errors

102 

103      sharingd 1

104 

105  Restrictive permissions: 3

106 

107  Lockfiles: 1

108 

109  Bundles

110 

111      /Library/Internet Plug-Ins/Quartz Composer.webplugin

112      - com.apple.QuartzComposer.webplugin

113      - Software Signing

114 

115  Non-loading kernel extensions

116 

117      /System/Library/Extensions/AppleOSXUSBNCM.kext

118      - com.apple.driver.AppleOSXUSBNCM

119      - Software Signing

120 

121  Elapsed time (sec): 360

Now, when I click /var/folders, I see two folders, the zz one and another one called zm with the following content:

Thanks again for your help.

Best,

J.

Hello etresoft and others,

I started the mac with the old OSX and when I was trying to reach the App Store, the system froze. Upon starting again, the system showed a report of an unexpected exit with the following text:

Interval Since Last Panic Report:  1787 sec

Panics Since Last Report:          1

Anonymous UUID:                    5BE8C0D8-CFCA-4BB9-ACA1-5FD26E436B6B

Wed Jul 27 18:31:34 2016

panic(cpu 2 caller 0xffffff80177d255a): Kernel trap at 0xffffff80177b9c55, type 14=page fault, registers:

CR0: 0x000000008001003b, CR2: 0x0000000000000000, CR3: 0x00000003e2845000, CR4: 0x0000000000002660

RAX: 0x0000000000000001, RBX: 0xfffffeb52a2f1fe8, RCX: 0x0000000000000000, RDX: 0x0000000000000060

RSP: 0xffffff8200d2b430, RBP: 0xffffff8200d2b4b0, RSI: 0x00007fff79311000, RDI: 0xffffff8033a78ba0

R8:  0x0000000000000001, R9:  0x0000000000000060, R10: 0xffffff8029d1b201, R11: 0xffffffffffffff9f

R12: 0x00000003ecd6e000, R13: 0xffffff8033a78ba0, R14: 0xffffff8038cb9a10, R15: 0xd94840bed18a6212

RFL: 0x0000000000010206, RIP: 0xffffff80177b9c55, CS:  0x0000000000000008, SS:  0x0000000000000010

Fault CR2: 0x0000000000000000, Error code: 0x0000000000000000, Fault CPU: 0x2, PL: 1

Backtrace (CPU 2), Frame : Return Address

0xffffff8200d2b0c0 : 0xffffff80176df792

0xffffff8200d2b140 : 0xffffff80177d255a

0xffffff8200d2b320 : 0xffffff80177f0233

0xffffff8200d2b340 : 0xffffff80177b9c55

0xffffff8200d2b4b0 : 0xffffff801777e10c

0xffffff8200d2b840 : 0xffffff8017bdb433

0xffffff8200d2b880 : 0xffffff80178f08d6

0xffffff8200d2ba00 : 0xffffff80178eb5eb

0xffffff8200d2bc40 : 0xffffff8017b146d5

0xffffff8200d2bd60 : 0xffffff801792a7d0

0xffffff8200d2bde0 : 0xffffff801791f630

0xffffff8200d2be60 : 0xffffff8017bc9787

0xffffff8200d2bf00 : 0xffffff8017bc95be

0xffffff8200d2bf60 : 0xffffff8017c2a731

0xffffff8200d2bfb0 : 0xffffff80177f0a36

BSD process name corresponding to current thread: com.apple.WebKit

Mac OS version:

15D21

Kernel version:

Darwin Kernel Version 15.3.0: Thu Dec 10 18:40:58 PST 2015; root:xnu-3248.30.4~1/RELEASE_X86_64

Kernel UUID: DECC9F02-27D7-31F0-9599-A9EF2873902C

Kernel slide:     0x0000000017400000

Kernel text base: 0xffffff8017600000

__HIB  text base: 0xffffff8017500000

System model name: iMac11,1 (Mac-F2268DAE)

System uptime in nanoseconds: 159267167993

last loaded kext at 58845589035: >!A!BHIDKeyboard 181 (addr 0xffffff7f99872000, size 16384)

last unloaded kext at 157167547110: >usb.!UUHCI 1.0.1 (addr 0xffffff7f98695000, size 126976)

loaded kexts:

>AudioAUUC 1.70

>AGPM 110.20.22

@filesystems.autofs 3.0

|IO!BSerialManager 4.4.3f4

>!AOSXWatchdog 1

>!AMikeyHIDDriver 124

>!AMikeyDriver 272.51.3

>!AHWSensor 1.9.5d0

>!AUpstreamUserClient 3.6.1

>pmtelemetry 1

@kext.AMDFramebuffer 1.4.0

>!AHDA 272.51.3

|IOUserEthernet 1.0.1

@ATIRadeonX2000 10.0.0

@Dont_Steal_Mac_OS_X 7.0.0

@kext.AMD4800!C 1.4.0

>!AHV 1

|Broadcom!BHost!CUSBTransport 4.4.3f4

>!ABacklight 170.8.8

>!ALPC 3.1

>ACPI_SMC_PlatformPlugin 1.0.0

>!A!ISlowAdaptiveClocking 4.0.0

>!AMCCSControl 1.2.13

>!AIR!C 327.5

>!UCardReader 3.7.1

@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1

@!AFSCompression.!AFSCompressionTypeZlib 1.0.0

@BootCache 38

|SCSITaskUserClient 3.7.7

|IOAHCIBlock!S 2.8.5

>!AFWOHCI 5.5.2

|!ABCM5701Ethernet 10.1.12

>AirPort.Atheros40 700.74.5

>!AAHCIPort 3.1.8

>usb.!UEHCIPCI 1.0.1

>!AACPIButtons 4.0

>!ARTC 2.0

>!AHPET 1.8

>!ASMBIOS 2.1

>!AACPIEC 4.0

>!AAPIC 1.7

>!A!ICPUPowerManagementClient 218.0.0

@nke.applicationfirewall 163

$quarantine 3

$TMSafetyNet 8

>!A!ICPUPowerManagement 218.0.0

>!A!BHIDKeyboard 181

>IO!BHIDDriver 4.4.3f4

>!AHIDKeyboard 181

@kext.triggers 1.0

|IOSerial!F 11

>DspFuncLib 272.51.3

@kext.OSvKernDSPLib 525

|IOSurface 108.0.1

>CoreCaptureResponder 1

@kext.AMDSupport 1.4.0

@!AGraphicsDeviceControl 3.12.6

|IO!BHost!CUSBTransport 4.4.3f4

|IO!B!F 4.4.3f4

>!ABacklightExpert 1.1.0

|IONDRVSupport 2.4.1

>!AHDA!C 272.51.3

|IOHDA!F 272.51.3

|IOAudio!F 204.3

@vecLib.kext 1.2.0

>!ASMBusPCI 1.0.14d1

|IOFireWireIP 2.2.6

>IOPlatformPluginLegacy 1.0.0

>IOPlatformPlugin!F 6.0.0d7

|IOSlowAdaptiveClocking!F 1.0.0

>!ASMC 3.1.9

>!ASMBus!C 1.0.14d1

|IOGraphics!F 2.4.1

>usb.IOUSBHostHIDDevice 1.0.1

|IOUSBHIDDriver 900.4.1

|IOSCSIBlockCommandsDevice 3.7.7

|IOUSBMass!SDriver 1.0.0

>usb.!UHostCompositeDevice 1.0.1

>usb.!UHub 1.0.1

|IOSCSIMultimediaCommandsDevice 3.7.7

|IOBD!S!F 1.8

|IODVD!S!F 1.8

|IOCD!S!F 1.8

|IOAHCISerialATAPI 2.6.2

|IOSCSIArchitectureModel!F 3.7.7

|IOFireWire!F 4.5.8

|IOEthernetAVB!C 1.0.3b3

>mDNSOffloadUserClient 1.0.1b8

|IO80211!F 1110.26

|IONetworking!F 3.2

>corecapture 1.0.4

|IOAHCI!F 2.8.1

>usb.!UEHCI 1.0.1

|IOUSB!F 900.4.1

|IOUSBHost!F 1.0.1

>!UHostMergeProperties 1.0.1

>!AEFINVRAM 2.0

>!AEFIRuntime 2.0

|IOHID!F 2.0.0

|IOSMBus!F 1.1

$sandbox 300.0

@kext.!AMatch 1.0.0d1

>!AKeyStore 2

>!AMobileFileIntegrity 1.0.5

>!ACredentialManager 1.0

>DiskImages 417.2

|IO!S!F 2.1

|IOReport!F 31

>!AFDEKeyStore 28.30

>!AACPIPlatform 4.0

|IOPCI!F 2.9

|IOACPI!F 1.4

@kec.Libm 1

@kec.pthread 1

@kec.corecrypto 1.0

Model: iMac11,1, BootROM IM111.0034.B04, 4 processors, Intel Core i7, 2.8 GHz, 16 GB, SMC 1.54f36

Graphics: ATI Radeon HD 4850, ATI Radeon HD 4850, PCIe, 512 MB

Memory Module: global_name

AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 2.1.14.6

Bluetooth: Version 2.4.5f3, 2 service, 19 devices, 1 incoming serial ports

Network Service: Ethernet, Ethernet, en0

Network Service: AirPort, AirPort, en1

Serial ATA Device: ST1000DM003-1SB10C, 931,51 GB

Serial ATA Device: OPTIARC DVD RW AD-5680H

USB Device: Hub, 0x0424  (SMSC), 0x2514, 0xfd100000 / 2

USB Device: USB OPTICAL MOUSE, 0x093a  (Pixart Imaging, Inc.), 0x2510, 0xfd140000 / 5

USB Device: Built-in iSight, 0x05ac  (Apple Inc.), 0x8502, 0xfd110000 / 4

USB Device: IR Receiver, 0x05ac  (Apple Inc.), 0x8242, 0xfd120000 / 3

USB Device: Hub, 0x0424  (SMSC), 0x2514, 0xfa100000 / 2

USB Device: BRCM2046 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0xfa110000 / 4

USB Device: Bluetooth USB Host Controller, 0x05ac  (Apple Inc.), 0x8215, 0xfa111000 / 5

USB Device: Internal Memory Card Reader, 0x05ac  (Apple Inc.), 0x8403, 0xfa120000 / 3

In this moment, reboot again into El Capitan on the 64GB USB to check wether it was a 10.6.8 issue or a hardware one. I found graphical artifacts like these:

and moments later, a kernel panic screen was displayed:

Now that the system is showing its fault, I am passing another test. I will put results in short time.

Thanks to everyone,

J.