Airport chip in Intel iMac

I am about to purchase an Intel Imac but have a concern about the new Airport chip in these systems. Previous chips were Broadcomm and now the Intel systems have Atheros chips (as per ArsTechnica). On my PowerBook G4 and iMac G5 with Comcast broadband it regularly tests at 6,000+kbps download. I also have a IBM ThinkPad T42p with the Atheros chip and the same Comcast test (at DSLReports.com) tests at 2,300kbps. All tested through Airport Express routers (Broadcomm chips).
Has anyone with Comcast or comparable broadband connections tested with their new Intel iMac?
All responses appreciated as I do not wish to duplicate my ThinkPad Atheros chip experinece with the new iMac.
Steve
Al PowerBook 15   Mac OS X (10.4.4)

I have broadband through Paxio (www.paxio.com) and I get stable download speeds of 1100+KB/sec from Apple server using both my iMac core duo airport wirless and my Powerbook G4.
iMac 20" Core Duo   Mac OS X (10.4.5)  

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    [email protected]

    Ok appears I solved my problem but not sure why.
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    Hello sgraziano,
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    Unable to connect to a Wi-Fi network
    Verify that you are attempting to connect your desired Wi-Fi network.
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    null

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  • Intel iMac wireless issues

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    I've had a 20" Intel iMac for over a year now and have never had very good success maintaining a connection to my network wirelessly. I have tried everything, but nothing fixes it permanently. It would just drop the network sporadically, especially if it hadn't been accessed in a day.
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  • Intel-iMac shuts down

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    I have two very old iPod's that still work great and a new iTouch. I still have an old PowerBook G4 that works great. The only problems that I have are the fans always running very loud and it's very hot.
    Anyways, I bought one of the first iMac G5's and it worked great for the first year. After that I had nothing, but problems. Very loud fan noise and it would always shut down even while just using Firefox. I was glad that Apple gave out an extended warranty on the iMac G5's. Of course they replaced the power supply and logic board a few times. I had to get Apple corporate involved and that's when they gave me a new intel-iMac.
    I just hit the 2 year mark with my new intel-iMac. The computer has ran great, but now it shuts down on me for no reason. I don't have loud fan noise, but the case gets very hot! I hope it's not a hardware problem again. Could it be a software problem?
    Below is my log file of the last crash:
    Jul 13 19:01:27 localhost kernel[0]: hi mem tramps at 0xffe00000
    Jul 13 19:01:28 localhost kernel[0]: PAE enabled
    Jul 13 19:01:28 localhost kernel[0]: 64 bit mode enabled
    Jul 13 19:01:28 localhost kernel[0]: standard timeslicing quantum is 10000 us
    Jul 13 19:01:28 localhost kernel[0]: vmpagebootstrap: 253712 free pages
    Jul 13 19:01:28 localhost kernel[0]: migtable_maxdispl = 71
    Jul 13 19:01:28 localhost kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes
    Jul 13 19:01:28 localhost kernel[0]: 89 prelinked modules
    Jul 13 19:01:28 localhost kernel[0]: ACPI CA 20060421
    Jul 13 19:01:28 localhost kernel[0]: AppleIntelCPUPowerManagement: ready
    Jul 13 19:01:28 localhost kernel[0]: AppleACPICPU: ProcessorApicId=0 LocalApicId=0 Enabled
    Jul 13 19:01:28 localhost kernel[0]: AppleACPICPU: ProcessorApicId=1 LocalApicId=1 Enabled
    Jul 13 19:01:28 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
    Jul 13 19:01:28 localhost kernel[0]: The Regents of the University of California. All rights reserved.
    Jul 13 19:01:28 localhost kernel[0]: using 5242 buffer headers and 4096 cluster IO buffer headers
    Jul 13 19:01:28 localhost kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes
    Jul 13 19:01:28 localhost kernel[0]: Started CPU 01
    Jul 13 19:01:28 localhost kernel[0]: IOAPIC: Version 0x20 Vectors 64:87
    Jul 13 19:01:28 localhost kernel[0]: ACPI: System State [S0 S3 S4 S5] (S3)
    Jul 13 19:01:28 localhost kernel[0]: Security auditing service present
    Jul 13 19:01:28 localhost kernel[0]: BSM auditing present
    Jul 13 19:01:28 localhost kernel[0]: disabled
    Jul 13 19:01:28 localhost kernel[0]: rooting via boot-uuid from /chosen: E2A4D71C-2C5C-492B-81AA-FABDCA405647
    Jul 13 19:01:28 localhost kernel[0]: Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
    Jul 13 19:01:28 localhost kernel[0]: USB caused wake event (EHCI)
    Jul 13 19:01:28 localhost kernel[0]: USB caused wake event (EHCI)
    Jul 13 19:01:28 localhost kernel[0]: FireWire (OHCI) Lucent ID 5901 PCI now active, GUID 001b63fffe8de00a; max speed s800.
    Jul 13 19:01:28 localhost kernel[0]: Got boot device = IOService:/AppleACPIPlatformExpert/PCI0/AppleACPIPCI/SATA@1F,2/AppleAHCI/PRT0@0 /IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDrive r/WDC WD2500AAJS-40RYA0 Media/IOGUIDPartitionScheme/Customer@2
    Jul 13 19:01:28 localhost kernel[0]: BSD root: disk0s2, major 14, minor 2
    Jul 13 19:01:28 localhost kernel[0]: jnl: replay_journal: from: 3255296 to: 21396480 (joffset 0x7d01000)
    Jul 13 19:01:28 localhost kernel[0]: CSRHIDTransitionDriver::probe:
    Jul 13 19:01:28 localhost kernel[0]: CSRHIDTransitionDriver::start before command
    Jul 13 19:01:28 localhost kernel[0]: CSRHIDTransitionDriver::stop
    Jul 13 19:01:28 localhost kernel[0]: IOBluetoothHCIController::start Idle Timer Stopped
    Jul 13 19:01:28 localhost kernel[0]: HFS: Removed 4 orphaned unlinked files
    Jul 13 19:01:28 localhost kernel[0]: Jettisoning kernel linker.
    Jul 13 19:01:28 localhost kernel[0]: Resetting IOCatalogue.
    Jul 13 19:01:28 localhost kernel[0]: Matching service count = 0
    Jul 13 19:01:28 localhost kernel[0]: Matching service count = 0
    Jul 13 19:01:28 localhost kernel[0]: Matching service count = 0
    Jul 13 19:01:28 localhost kernel[0]: Matching service count = 0
    Jul 13 19:01:28 localhost kernel[0]: Matching service count = 0
    Jul 13 19:01:28 localhost kernel[0]: Matching service count = 0
    Jul 13 19:01:28 localhost kernel[0]: Previous Shutdown Cause: 0
    Jul 13 19:01:28 localhost kernel[0]: BTCOEXIST on
    Jul 13 19:01:28 localhost kernel[0]: wl0: Broadcom BCM4328 802.11 Wireless Controller
    Jul 13 19:01:28 localhost kernel[0]: 4.170.46.9IPv6 packet filtering initialized, default to accept, logging disabled
    Jul 13 19:01:27 localhost mDNSResponder-108.6 (Jul 19 2007 11: 41:28)[31]: starting
    Jul 13 19:01:27 localhost lookupd[40]: lookupd (version 369.8) starting - Mon Jul 13 19:01:27 2009
    Jul 13 19:01:27 localhost memberd[39]: memberd starting up
    Jul 13 19:01:28 localhost DirectoryService[44]: Launched version 2.1 (v353.6)
    Jul 13 19:01:29 localhost usbmuxd[34]: usbmuxd-167 built for iTunesEightTwo on May 11 2009 at 13:36:48, running 32 bit
    Jul 13 19:01:29 localhost diskarbitrationd[38]: disk0s2 hfs 64955A85-1720-3C08-B2FF-FF77C91746BC Macintosh HD /
    Jul 13 19:01:29 localhost kernel[0]: yukon: Ethernet address 00:1b:63:96:01:17
    Jul 13 19:01:29 localhost kernel[0]: AirPort_Brcm43xx: Ethernet address 00:1c:b3:71:ae:a7
    Jul 13 19:01:29 localhost lookupd[62]: lookupd (version 369.8) starting - Mon Jul 13 19:01:29 2009
    Jul 13 19:01:29 localhost kernel[0]: Registering For 802.11 Events
    Jul 13 19:01:29 localhost kernel[0]: [HCIController][setupHardware] AFH Is Supported
    Jul 13 19:01:29 Shamu configd[36]: setting hostname to "Shamu.local"
    Jul 13 19:01:30 Shamu kernel[0]: WLCE_COUNTRY_CODECHANGED
    Jul 13 19:01:30 Shamu kernel[0]: en1: 802.11d country code set to 'US'.
    Jul 13 19:01:30 Shamu kernel[0]: en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 5 6 7 8 9 10 11 1 2 3 4 5 6 7 36 40 44 48 52 56 60 64 149 153 157 161 165 40 48 56 64 153 161 36 44 52 60 149 157
    Jul 13 19:01:31 Shamu kernel[0]: WLCE_COUNTRY_CODECHANGED
    Jul 13 19:01:31 Shamu kernel[0]: en1: 802.11d country code set to 'X0'.
    Jul 13 19:01:31 Shamu kernel[0]: en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 5 6 7 8 9 10 11 1 2 3 4 5 6 7 36 40 44 48 52 56 60 64 149 153 157 161 165 40 48 56 64 153 161 36 44 52 60 149 157
    Jul 13 19:01:32 Shamu kernel[0]: Authentication Mismatch failure
    Jul 13 19:01:32 Shamu mDNSResponder: Adding browse domain local.
    Jul 13 19:01:33 Shamu kernel[0]: MAC AUTH succeeded
    Jul 13 19:01:33 Shamu /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow: Login Window Application Started
    Jul 13 19:01:34 Shamu loginwindow[67]: Login Window Started Security Agent
    Jul 13 19:01:35 Shamu configd[36]: executing /System/Library/SystemConfiguration/Kicker.bundle/Contents/Resources/enable-net work
    Jul 13 19:01:35 Shamu configd[36]: posting notification com.apple.system.config.network_change
    Jul 13 19:01:35 Shamu lookupd[77]: lookupd (version 369.8) starting - Mon Jul 13 19:01:35 2009
    Jul 13 19:01:36 Shamu VersionCueCS2Daemon[155]: warning: VersionCueCS2Daemon not started by mach_init process (parent pid: 1)
    Jul 13 19:01:37 Shamu configd[36]: target=enable-network: disabled
    Jul 13 19:01:45 Shamu /System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport: Currently connected to network 435E1
    Thanks for your help!
    Jason

    Okay, started up my computer last night just for a few mins. It crashed again when just checking my e-mail.
    Jul 18 23:17:39 Shamu kernel[0]: System Wake
    Jul 18 23:17:39 Shamu kernel[0]: USB caused wake event (EHCI)
    Jul 18 23:17:48 Shamu configd[36]: posting notification com.apple.system.config.network_change
    Jul 18 23:17:48 Shamu launchd: Server 0 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[617]: exited abnormally: Hangup
    Jul 18 23:17:50 Shamu kernel[0]: Authentication Mismatch failure
    Jul 18 23:17:52 Shamu kernel[0]: MAC AUTH succeeded
    Jul 18 23:17:53 Shamu mDNSResponder: Repeated transitions for interface en1 (FE80:0000:0000:0000:021C:B3FF:FE71:AEA7); delaying packets by 5 seconds
    Jul 18 23:17:54 Shamu lookupd[1092]: lookupd (version 369.8) starting - Sat Jul 18 23:17:54 2009
    Jul 18 23:18:03 Shamu configd[36]: posting notification com.apple.system.config.network_change
    Jul 18 23:18:03 Shamu lookupd[1096]: lookupd (version 369.8) starting - Sat Jul 18 23:18:03 2009
    Jul 18 23:18:05 Shamu mDNSResponder: Repeated transitions for interface en1 (192.168.1.7); delaying packets by 5 seconds
    Jul 18 23:20:56 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:21:00 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:21:08 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:21:20 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:21:39 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:21:56 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:22:02 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:22:06 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:22:10 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:22:14 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:22:58 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:23:16 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:23:53 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:24:04 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:24:23 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:34:03 Shamu kernel[0]: AirPort: Roam (Beacons Lost)
    Jul 18 23:35:53 localhost kernel[0]: hi mem tramps at 0xffe00000
    Jul 18 23:35:54 localhost kernel[0]: PAE enabled
    Jul 18 23:35:54 localhost kernel[0]: 64 bit mode enabled
    Jul 18 23:35:54 localhost kernel[0]: standard timeslicing quantum is 10000 us
    Jul 18 23:35:54 localhost kernel[0]: vmpagebootstrap: 253712 free pages
    Jul 18 23:35:54 localhost kernel[0]: migtable_maxdispl = 71
    Jul 18 23:35:54 localhost kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes
    Jul 18 23:35:54 localhost kernel[0]: 89 prelinked modules
    Jul 18 23:35:54 localhost kernel[0]: ACPI CA 20060421
    Jul 18 23:35:54 localhost kernel[0]: AppleIntelCPUPowerManagement: ready
    Jul 18 23:35:54 localhost kernel[0]: AppleACPICPU: ProcessorApicId=0 LocalApicId=0 Enabled
    Jul 18 23:35:54 localhost kernel[0]: AppleACPICPU: ProcessorApicId=1 LocalApicId=1 Enabled
    Jul 18 23:35:54 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
    Jul 18 23:35:54 localhost kernel[0]: The Regents of the University of California. All rights reserved.
    Jul 18 23:35:54 localhost kernel[0]: using 5242 buffer headers and 4096 cluster IO buffer headers
    Jul 18 23:35:54 localhost kernel[0]: Enabling XMM register save/restore and SSE/SSE2 opcodes
    Jul 18 23:35:54 localhost kernel[0]: Started CPU 01
    Jul 18 23:35:54 localhost kernel[0]: IOAPIC: Version 0x20 Vectors 64:87
    Jul 18 23:35:54 localhost kernel[0]: ACPI: System State [S0 S3 S4 S5] (S3)
    Jul 18 23:35:54 localhost kernel[0]: Security auditing service present
    Jul 18 23:35:54 localhost kernel[0]: BSM auditing present
    Jul 18 23:35:54 localhost kernel[0]: disabled
    Jul 18 23:35:54 localhost kernel[0]: rooting via boot-uuid from /chosen: E2A4D71C-2C5C-492B-81AA-FABDCA405647
    Jul 18 23:35:54 localhost kernel[0]: Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
    Jul 18 23:35:54 localhost kernel[0]: USB caused wake event (EHCI)
    Jul 18 23:35:54 localhost kernel[0]: USB caused wake event (EHCI)
    Jul 18 23:35:54 localhost kernel[0]: FireWire (OHCI) Lucent ID 5901 PCI now active, GUID 001b63fffe8de00a; max speed s800.
    Jul 18 23:35:54 localhost kernel[0]: Got boot device = IOService:/AppleACPIPlatformExpert/PCI0/AppleACPIPCI/SATA@1F,2/AppleAHCI/PRT0@0 /IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDrive r/WDC WD2500AAJS-40RYA0 Media/IOGUIDPartitionScheme/Customer@2
    Jul 18 23:35:54 localhost kernel[0]: BSD root: disk0s2, major 14, minor 2
    Jul 18 23:35:54 localhost kernel[0]: jnl: replay_journal: from: 8706048 to: 16946176 (joffset 0x7d01000)
    Jul 18 23:35:54 localhost kernel[0]: HFS: Removed 7 orphaned unlinked files
    Jul 18 23:35:54 localhost kernel[0]: CSRHIDTransitionDriver::probe:
    Jul 18 23:35:54 localhost kernel[0]: CSRHIDTransitionDriver::start before command
    Jul 18 23:35:54 localhost kernel[0]: Jettisoning kernel linker.
    Jul 18 23:35:54 localhost kernel[0]: Resetting IOCatalogue.
    Jul 18 23:35:54 localhost kernel[0]: Matching service count = 0
    Jul 18 23:35:54 localhost kernel[0]: Matching service count = 0
    Jul 18 23:35:54 localhost kernel[0]: Matching service count = 0
    Jul 18 23:35:54 localhost kernel[0]: Matching service count = 0
    Jul 18 23:35:54 localhost kernel[0]: Matching service count = 0
    Jul 18 23:35:54 localhost kernel[0]: Matching service count = 0
    Jul 18 23:35:54 localhost kernel[0]: Previous Shutdown Cause: 0
    Jul 18 23:35:54 localhost kernel[0]: CSRHIDTransitionDriver::stop
    Jul 18 23:35:54 localhost kernel[0]: BTCOEXIST on
    Jul 18 23:35:54 localhost kernel[0]: wl0: Broadcom BCM4328 802.11 Wireless Controller
    Jul 18 23:35:54 localhost kernel[0]: 4.170.46.9IOBluetoothHCIController::start Idle Timer Stopped
    Jul 18 23:35:54 localhost kernel[0]: IPv6 packet filtering initialized, default to accept, logging disabled
    Jul 18 23:35:53 localhost memberd[40]: memberd starting up
    Jul 18 23:35:53 localhost mDNSResponder-108.6 (Jul 19 2007 11: 41:28)[31]: starting
    Jul 18 23:35:53 localhost lookupd[41]: lookupd (version 369.8) starting - Sat Jul 18 23:35:53 2009
    Jul 18 23:35:53 localhost DirectoryService[44]: Launched version 2.1 (v353.6)
    Jul 18 23:35:55 localhost usbmuxd[34]: usbmuxd-167 built for iTunesEightTwo on May 11 2009 at 13:36:48, running 32 bit
    Jul 18 23:35:55 localhost kernel[0]: yukon: Ethernet address 00:1b:63:96:01:17
    Jul 18 23:35:55 localhost diskarbitrationd[39]: disk0s2 hfs 64955A85-1720-3C08-B2FF-FF77C91746BC Macintosh HD /
    Jul 18 23:35:55 localhost kernel[0]: AirPort_Brcm43xx: Ethernet address 00:1c:b3:71:ae:a7
    Jul 18 23:35:55 localhost lookupd[62]: lookupd (version 369.8) starting - Sat Jul 18 23:35:55 2009
    Jul 18 23:35:55 localhost kernel[0]: Registering For 802.11 Events
    Jul 18 23:35:55 localhost kernel[0]: [HCIController][setupHardware] AFH Is Supported
    Jul 18 23:35:55 Shamu configd[37]: setting hostname to "Shamu.local"
    Jul 18 23:35:56 Shamu kernel[0]: WLCE_COUNTRY_CODECHANGED
    Jul 18 23:35:56 Shamu kernel[0]: en1: 802.11d country code set to 'US'.
    Jul 18 23:35:56 Shamu kernel[0]: en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 5 6 7 8 9 10 11 1 2 3 4 5 6 7 36 40 44 48 52 56 60 64 149 153 157 161 165 40 48 56 64 153 161 36 44 52 60 149 157
    Jul 18 23:35:57 Shamu kernel[0]: WLCE_COUNTRY_CODECHANGED
    Jul 18 23:35:57 Shamu kernel[0]: en1: 802.11d country code set to 'X0'.
    Jul 18 23:35:57 Shamu kernel[0]: en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 5 6 7 8 9 10 11 1 2 3 4 5 6 7 36 40 44 48 52 56 60 64 149 153 157 161 165 40 48 56 64 153 161 36 44 52 60 149 157
    Jul 18 23:35:58 Shamu kernel[0]: Authentication Mismatch failure
    Jul 18 23:35:58 Shamu mDNSResponder: Adding browse domain local.
    Jul 18 23:36:00 Shamu kernel[0]: MAC AUTH succeeded
    Jul 18 23:36:00 Shamu /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow: Login Window Application Started
    Jul 18 23:36:00 Shamu loginwindow[67]: Login Window Started Security Agent
    Jul 18 23:36:01 Shamu configd[37]: executing /System/Library/SystemConfiguration/Kicker.bundle/Contents/Resources/enable-net work
    Jul 18 23:36:01 Shamu configd[37]: posting notification com.apple.system.config.network_change
    Jul 18 23:36:01 Shamu lookupd[77]: lookupd (version 369.8) starting - Sat Jul 18 23:36:01 2009
    Jul 18 23:36:02 Shamu configd[37]: target=enable-network: disabled
    Jul 18 23:36:02 Shamu VersionCueCS2Daemon[162]: warning: VersionCueCS2Daemon not started by mach_init process (parent pid: 1)
    Jul 18 23:36:17 Shamu /System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport: Currently connected to network 435E1
    Thanks for any help,
    Jason

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