'Normal use' ok ; Gaming = Graphics 'snow' and then Screen Freezes

History is that I'm a PC convert from Nov 05, and happy with the move. Played Civ IV and WoW without problem until around Nov 06. Then Civ IV started crashing; Screen got 'snowy' graphics and then froze. Was within warranty at that stage . Lesson to be had here in extended warranty. Didn't make much of this because I was finished with these games anyway, and 'normal' applications and internet etc use have been fine all along & still are, so just stopped gaming. Now (Feb) decided to get back into WoW. Same 'snow' and 'freeze' problem when open this game, as well as Civ IV, including after reloading software. There is no error message, just the freeze and the 'multi-coloured circle of death'! Things I've tried;
- Apple Software update
- Apple extended Hardware test; passed all
- Clean re-load of all software
- Reset the PRAM
- Minimised the performance settings for WoW, including running in a window; this has extended time before crash from a few seconds to up to several minutes. Not long enough to get to lvl 70!
- Checked that my model doesn't fall under any extended warranty's!
- Downloaded and run 'Rember' = "All tests passed."
- Downloaded 'latest' ATI Radeon drivers from their web (were very old & not a direct match so not sure that this was of any use)
Below is 'stuff that might be helpful', including the log!
Idea's anyone? If it's something wrong with the graphics card then I'd like to know 'for sure' before forking out for a replacement. Other stuff to try?
Thanks, Mike
Model
Hardware Overview:
Machine Name: iMac G5
Machine Model: PowerMac12,1
CPU Type: PowerPC G5 (3.0)
Number Of CPUs: 1
CPU Speed: 1.9 GHz
L2 Cache (per CPU): 512 KB
Memory: 1 GB
Bus Speed: 633 MHz
Boot ROM Version: 5.2.6f1
Serial Number: W85468NYTAT
Sales Order Number: Z0CK000K8
Graphics/Displays:
ATI Radeon X600 Pro:
Chipset Model: ATY,RV370
Type: Display
Bus: PCI
Slot: PCI-E
VRAM (Total): 128 MB
Vendor: ATI (0x1002)
Device ID: 0x5b62
Revision ID: 0x0000
ROM Revision: 113-xxxxx-113
Displays:
iMac:
Display Type: LCD
Resolution: 1440 x 900
Depth: 32-bit Color
Built-In: Yes
Core Image: Supported
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Display:
Status: No display connected
System Software Overview:
System Version: Mac OS X 10.4.8 (8L127)
Kernel Version: Darwin 8.8.0
Boot Volume: Macintosh HD
Events as follows; Start computer for first time today, verify that I know where the Console log is, connect to internet, start WoW, after several minutes (a record!) same problem. Crashed around 9.15.
Feb 25 09:38:57 localhost kernel[0]: standard timeslicing quantum is 10000 us
Feb 25 09:38:57 localhost memberd[38]: memberd starting up
Feb 25 09:38:57 localhost kernel[0]: vmpagebootstrap: 253028 free pages
Feb 25 09:38:57 localhost kernel[0]: migtable_maxdispl = 70
Feb 25 09:38:57 localhost kernel[0]: 96 prelinked modules
Feb 25 09:38:57 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
Feb 25 09:38:57 localhost kernel[0]: The Regents of the University of California. All rights reserved.
Feb 25 09:38:57 localhost DirectoryService[43]: Launched version 2.1 (v353.2)
Feb 25 09:38:57 localhost kernel[0]: using 2621 buffer headers and 2621 cluster IO buffer headers
Feb 25 09:38:57 localhost kernel[0]: AppleU3: WARNING: platform-chip-fault expected, but not found
Feb 25 09:38:57 localhost kernel[0]: AppleKauaiATA shasta-ata features enabled
Feb 25 09:38:57 localhost kernel[0]: DART enabled
Feb 25 09:38:57 localhost kernel[0]: USB caused wake event (EHCI)
Feb 25 09:38:57 localhost kernel[0]: FireWire (OHCI) Apple ID 52 built-in now active, GUID 001451ff fe2a1e38; max speed s400.
Feb 25 09:38:57 localhost kernel[0]: CSRHIDTransitionDriver::probe:
Feb 25 09:38:57 localhost kernel[0]: CSRHIDTransitionDriver::start before command
Feb 25 09:38:57 localhost kernel[0]: Security auditing service present
Feb 25 09:38:57 localhost kernel[0]: BSM auditing present
Feb 25 09:38:57 localhost kernel[0]: disabled
Feb 25 09:38:57 localhost kernel[0]: rooting via boot-uuid from /chosen: 1E8FCD46-F0AA-35E4-BCCA-F26C528861E1
Feb 25 09:38:57 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>
Feb 25 09:38:57 localhost mDNSResponder-107.4 (May 4 2006 16: 34:29)[31]: starting
Feb 25 09:38:57 localhost kernel[0]: Got boot device = IOService:/MacRISC4PE/ht@0,f2000000/AppleMacRiscHT/pci@3/IOPCI2PCIBridge/k2-sat a-root@C/AppleK2SATARoot/k2-sata@0/AppleK2SATA/ATADeviceNub@0/IOATABlockStorageD river/IOATABlockStorageDevice/IOBlockStorageDriver/Hitachi HDS725050KLA360 Media/IOApplePartitionScheme/Untitled@3
Feb 25 09:38:57 localhost lookupd[42]: lookupd (version 369.5) starting - Sun Feb 25 09:38:57 2007
Feb 25 09:38:57 localhost kernel[0]: BSD root: disk0s3, major 14, minor 2
Feb 25 09:38:57 localhost kernel[0]: jnl: replay_journal: from: 31147008 to: 25801728 (joffset 0xe90000)
Feb 25 09:38:57 localhost kernel[0]: AppleSMU -- shutdown cause = 3
Feb 25 09:38:57 localhost kernel[0]: CSRHIDTransitionDriver::stop
Feb 25 09:38:57 localhost kernel[0]: AppleSMU::PMU vers = 0x000d0092, SPU vers = 0x56, SDB vers = 0x01,
Feb 25 09:38:57 localhost kernel[0]: IOBluetoothHCIController::start Idle Timer Stopped
Feb 25 09:38:57 localhost kernel[0]: Jettisoning kernel linker.
Feb 25 09:38:57 localhost kernel[0]: Resetting IOCatalogue.
Feb 25 09:38:57 localhost kernel[0]: Matching service count = 0
Feb 25 09:38:57 localhost kernel[0]: Matching service count = 2
Feb 25 09:38:57 localhost kernel[0]: Matching service count = 2
Feb 25 09:38:57 localhost kernel[0]: Matching service count = 2
Feb 25 09:38:57 localhost kernel[0]: Matching service count = 2
Feb 25 09:38:57 localhost kernel[0]: Matching service count = 2
Feb 25 09:38:57 localhost kernel[0]: SMUNeo2PlatformPlugin::initThermalProfile - entry
Feb 25 09:38:57 localhost kernel[0]: SMUNeo2PlatformPlugin::initThermalProfile - calling adjust
Feb 25 09:38:57 localhost kernel[0]: IPv6 packet filtering initialized, default to accept, logging disabled
Feb 25 09:38:58 localhost kernel[0]: UniNEnet: Ethernet address 00:14:51:2a:1e:38
Feb 25 09:38:58 localhost kernel[0]: AirPortPCI_MM: Ethernet address 00:14:51:7d:cc:a8
Feb 25 09:38:58 localhost diskarbitrationd[37]: disk0s3 hfs 1E8FCD46-F0AA-35E4-BCCA-F26C528861E1 Macintosh HD /
Feb 25 09:38:58 localhost launchd: Server 332f in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[42]: exited abnormally: Hangup
Feb 25 09:38:58 localhost lookupd[64]: lookupd (version 369.5) starting - Sun Feb 25 09:38:58 2007
Feb 25 09:38:59 localhost configd[35]: WirelessConfigure: 88001003
Feb 25 09:38:59 localhost configd[35]: initCardWithStoredPrefs failed.
Feb 25 09:38:59 localhost configd[35]: WirelessConfigure: 88001003
Feb 25 09:39:00 localhost kernel[0]: [HCIController][setupHardware] AFH Is Supported
Feb 25 09:39:01 localhost kernel[0]: ATY,Aphrodite2_A: vram [98000000:08000000]
Feb 25 09:39:01 localhost mDNSResponder: Adding browse domain local.
Feb 25 09:39:02 localhost kernel[0]: ATY,Aphrodite2_B: vram [98000000:08000000]
Feb 25 09:39:02 localhost /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow: Login Window Application Started
Feb 25 09:39:02 localhost loginwindow[68]: Login Window Started Security Agent
Feb 25 09:39:07 mike-hodgkinsons-imac-g5 configd[35]: setting hostname to "mike-hodgkinsons-imac-g5.local"
Feb 25 09:39:09 mike-hodgkinsons-imac-g5 kernel[0]: AirPort: Link Active: "Hodgo Home Network" - 0014516ac45f - chan 1
Feb 25 09:39:12 mike-hodgkinsons-imac-g5 launchd: Server 0 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[64]: exited abnormally: Hangup
Feb 25 09:39:12 mike-hodgkinsons-imac-g5 lookupd[129]: lookupd (version 369.5) starting - Sun Feb 25 09:39:12 2007
Feb 25 09:39:12 mike-hodgkinsons-imac-g5 configd[35]: executing /System/Library/SystemConfiguration/Kicker.bundle/Contents/Resources/enable-net work
Feb 25 09:39:12 mike-hodgkinsons-imac-g5 configd[35]: posting notification com.apple.system.config.network_change
Feb 25 09:39:13 mike-hodgkinsons-imac-g5 launchd: Server 460b in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[129]: exited abnormally: Hangup
Feb 25 09:39:13 mike-hodgkinsons-imac-g5 lookupd[131]: lookupd (version 369.5) starting - Sun Feb 25 09:39:13 2007
Feb 25 09:39:32 mike-hodgkinsons-imac-g5 ntpdate[143]: no server suitable for synchronization found
Feb 25 09:39:32 mike-hodgkinsons-imac-g5 configd[35]: target=enable-network: disabled
Feb 25 09:40:04 mike-hodgkinsons-imac-g5 diskarbitrationd[37]: disk1s1 msdos 00000000-0000-0000-0000-000000000000 My Book /Volumes/My Book
Feb 25 09:40:27 mike-hodgkinsons-imac-g5 diskarbitrationd[37]: disk1s1 msdos 00000000-0000-0000-0000-000000000000 My Book /Volumes/My Book
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextFillRects: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSaveGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextDrawImage: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextRestoreGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextFillRects: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSaveGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextDrawImage: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextRestoreGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextFillRects: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSaveGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextDrawImage: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextRestoreGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextFillRects: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSaveGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextDrawImage: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextRestoreGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextFillRects: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSaveGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextDrawImage: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextRestoreGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextFillRects: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSaveGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextDrawImage: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextRestoreGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextConcatCTM: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextGetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextFillRects: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSaveGState: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetFillColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetStrokeColorWithColor: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextSetCompositeOperation: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextDrawImage: invalid context
Feb 25 09:46:08 mike-hodgkinsons-imac-g5 /Applications/BigPond/BigPond Broadband Cable Login.app/Contents/MacOS/BigPond Broadband Cable Login: CGContextRestoreGState: invalid context
Feb 25 09:55:31 localhost kernel[0]: standard timeslicing quantum is 10000 us
Feb 25 09:55:31 localhost memberd[38]: memberd starting up
Feb 25 09:55:32 localhost kernel[0]: vmpagebootstrap: 253028 free pages
Feb 25 09:55:31 localhost mDNSResponder-107.4 (May 4 2006 16: 34:29)[31]: starting
Feb 25 09:55:32 localhost kernel[0]: migtable_maxdispl = 70
Feb 25 09:55:31 localhost lookupd[42]: lookupd (version 369.5) starting - Sun Feb 25 09:55:31 2007
Feb 25 09:55:32 localhost kernel[0]: 96 prelinked modules
Feb 25 09:55:32 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
Feb 25 09:55:32 localhost kernel[0]: The Regents of the University of California. All rights reserved.
Feb 25 09:55:32 localhost kernel[0]: using 2621 buffer headers and 2621 cluster IO buffer headers
Feb 25 09:55:32 localhost kernel[0]: AppleU3: WARNING: platform-chip-fault expected, but not found
Feb 25 09:55:32 localhost kernel[0]: AppleKauaiATA shasta-ata features enabled
Feb 25 09:55:32 localhost kernel[0]: DART enabled
Feb 25 09:55:32 localhost kernel[0]: USB caused wake event (EHCI)
Feb 25 09:55:32 localhost kernel[0]: FireWire (OHCI) Apple ID 52 built-in now active, GUID 001451ff fe2a1e38; max speed s400.
Feb 25 09:55:32 localhost kernel[0]: CSRHIDTransitionDriver::probe:
Feb 25 09:55:32 localhost kernel[0]: CSRHIDTransitionDriver::start before command
Feb 25 09:55:32 localhost kernel[0]: Security auditing service present
Feb 25 09:55:32 localhost kernel[0]: BSM auditing present
Feb 25 09:55:32 localhost kernel[0]: disabled
Feb 25 09:55:32 localhost kernel[0]: rooting via boot-uuid from /chosen: 1E8FCD46-F0AA-35E4-BCCA-F26C528861E1
Feb 25 09:55:32 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>
Feb 25 09:55:32 localhost kernel[0]: Got boot device = IOService:/MacRISC4PE/ht@0,f2000000/AppleMacRiscHT/pci@3/IOPCI2PCIBridge/k2-sat a-root@C/AppleK2SATARoot/k2-sata@0/AppleK2SATA/ATADeviceNub@0/IOATABlockStorageD river/IOATABlockStorageDevice/IOBlockStorageDriver/Hitachi HDS725050KLA360 Media/IOApplePartitionScheme/Untitled@3
Feb 25 09:55:32 localhost kernel[0]: BSD root: disk0s3, major 14, minor 2
Feb 25 09:55:32 localhost kernel[0]: jnl: replay_journal: from: 25801728 to: 41762816 (joffset 0xe90000)
Feb 25 09:55:32 localhost kernel[0]: AppleSMU -- shutdown cause = 3
Feb 25 09:55:32 localhost kernel[0]: CSRHIDTransitionDriver::stop
Feb 25 09:55:32 localhost kernel[0]: AppleSMU::PMU vers = 0x000d0092, SPU vers = 0x56, SDB vers = 0x01,
Feb 25 09:55:32 localhost kernel[0]: IOBluetoothHCIController::start Idle Timer Stopped
Feb 25 09:55:32 localhost kernel[0]: Jettisoning kernel linker.
Feb 25 09:55:32 localhost kernel[0]: Resetting IOCatalogue.
Feb 25 09:55:32 localhost kernel[0]: Matching service count = 0
Feb 25 09:55:32 localhost kernel[0]: Matching service count = 2
Feb 25 09:55:32 localhost kernel[0]: Matching service count = 2
Feb 25 09:55:32 localhost kernel[0]: Matching service count = 2
Feb 25 09:55:32 localhost kernel[0]: Matching service count = 2
Feb 25 09:55:32 localhost kernel[0]: Matching service count = 2
Feb 25 09:55:32 localhost kernel[0]: SMUNeo2PlatformPlugin::initThermalProfile - entry
Feb 25 09:55:32 localhost kernel[0]: SMUNeo2PlatformPlugin::initThermalProfile - calling adjust
Feb 25 09:55:32 localhost kernel[0]: IPv6 packet filtering initialized, default to accept, logging disabled
Feb 25 09:55:32 localhost DirectoryService[43]: Launched version 2.1 (v353.2)
Feb 25 09:55:32 localhost kernel[0]: UniNEnet: Ethernet address 00:14:51:2a:1e:38
Feb 25 09:55:32 localhost kernel[0]: AirPortPCI_MM: Ethernet address 00:14:51:7d:cc:a8
Feb 25 09:55:32 localhost diskarbitrationd[37]: disk0s3 hfs 1E8FCD46-F0AA-35E4-BCCA-F26C528861E1 Macintosh HD /
Feb 25 09:55:32 localhost launchd: Server 3d1b in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[42]: exited abnormally: Hangup
Feb 25 09:55:32 localhost lookupd[61]: lookupd (version 369.5) starting - Sun Feb 25 09:55:32 2007
Feb 25 09:55:33 localhost configd[35]: WirelessConfigure: 88001003
Feb 25 09:55:33 localhost configd[35]: initCardWithStoredPrefs failed.
Feb 25 09:55:33 localhost configd[35]: WirelessConfigure: 88001003
Feb 25 09:55:34 localhost kernel[0]: [HCIController][setupHardware] AFH Is Supported
Feb 25 09:55:35 localhost mDNSResponder: Adding browse domain local.
Feb 25 09:55:36 localhost kernel[0]: ATY,Aphrodite2_A: vram [98000000:08000000]
Feb 25 09:55:36 localhost kernel[0]: ATY,Aphrodite2_B: vram [98000000:08000000]
Feb 25 09:55:36 localhost /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow: Login Window Application Started
Feb 25 09:55:36 localhost loginwindow[68]: Login Window Started Security Agent
Feb 25 09:55:41 mike-hodgkinsons-imac-g5 configd[35]: setting hostname to "mike-hodgkinsons-imac-g5.local"
Feb 25 09:55:44 mike-hodgkinsons-imac-g5 kernel[0]: AirPort: Link Active: "Hodgo Home Network" - 0014516ac45f - chan 1
Feb 25 09:55:47 mike-hodgkinsons-imac-g5 launchd: Server 0 in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[61]: exited abnormally: Hangup
Feb 25 09:55:47 mike-hodgkinsons-imac-g5 configd[35]: executing /System/Library/SystemConfiguration/Kicker.bundle/Contents/Resources/enable-net work
Feb 25 09:55:47 mike-hodgkinsons-imac-g5 lookupd[130]: lookupd (version 369.5) starting - Sun Feb 25 09:55:47 2007
Feb 25 09:55:47 mike-hodgkinsons-imac-g5 configd[35]: posting notification com.apple.system.config.network_change
Feb 25 09:55:47 mike-hodgkinsons-imac-g5 launchd: Server 1baf in bootstrap 1103 uid 0: "/usr/sbin/lookupd"[130]: exited abnormally: Hangup
Feb 25 09:55:47 mike-hodgkinsons-imac-g5 lookupd[131]: lookupd (version 369.5) starting - Sun Feb 25 09:55:47 2007
Feb 25 09:56:04 mike-hodgkinsons-imac-g5 configd[35]: target=enable-network: disabled
1.9 GHz PowerPC G5   Mac OS X (10.4.8)  
1.9 GHz PowerPC G5   Mac OS X (10.4.8)  
1.9 GHz PowerPC G5   Mac OS X (10.4.8)  
1.9 GHz PowerPC G5   Mac OS X (10.4.8)  

Yes, it smells like the video card, because it only crashes when running the high-end graphics. Presumably this is because only the games use the video card; if it were another piece of hardware then normal applications would crash too. And because I've done a clean software reload it shouldn't be a software problem.
However, I'd still have liked some greater certaintly before replacing the video card, e.g. some type of hardware test. I don't want to replace the card and then find that I've still got the same problem.
I don't get a grey crash screen, it's just stuck on the distorted last screen shot, with the twirling multi-coloured circle. Then when I turn off the mac it goes black.
Know of some way to 'test' the video card?

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