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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > iMac G5 Panic

iMac G5 Panic
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lordjmorris
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Jul 14, 2011, 06:01 PM
 
Hello , can anyone help me ? i keep getting kernal panics and i dont know why , ram and hard drive are new. i get quite a few of these a day maybe 2 or 3 and sometimes it just freezes , like the mouse just stops so i have to shut it down and restart. Any ideas?







Wed Jul 13 17:59:19 2011





Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x000000000000003C PC=0x0000000000CE23B0

Latest crash info for cpu 0:

Exception state (sv=0x22139780)

PC=0x00CE23B0; MSR=0x00009030; DAR=0x0000003C; DSISR=0x40000000; LR=0x00CC6408; R1=0x22166A60; XCP=0x0000000C (0x300 - Data access)

Backtrace:

0x00CE2424 0x00CC6408 0x00CCBA04 0x00CCBDE4 0x0037D9C8 0x0037AC9C

0x00094798 0x0002C200 0x00024CFC 0x000B364C 0x743E3C2F

backtrace terminated - frame not mapped or invalid: 0xBFFECF40



Kernel loadable modules in backtrace (with dependencies):

com.apple.ATIRadeon9700(5.3.6)@0xcb1000->0xd0dfff

dependency: com.apple.iokit.IONDRVSupport(1.7.1)@0x784000

dependency: com.apple.iokit.IOPCIFamily(2.5)@0x74a000

dependency: com.apple.iokit.IOGraphicsFamily(1.7.1)@0x75e000

Proceeding back via exception chain:

Exception state (sv=0x22139780)

previously dumped as "Latest" state. skipping...

Exception state (sv=0x22132000)

PC=0x96257158; MSR=0x0200D030; DAR=0x0D308A18; DSISR=0x0A000000; LR=0x9625E080; R1=0xBFFECF40; XCP=0x00000030 (0xC00 - System call)



BSD process name corresponding to current thread: WindowServer



Mac OS version:

9G66



Kernel version:

Darwin Kernel Version 9.6.0: Mon Nov 24 17:39:01 PST 2008; root:xnu-1228.9.59~1/RELEASE_PPC

System model name: PowerMac8,2

panic(cpu 0 caller 0xFFFF0003): 0x300 - Data access

Latest stack backtrace for cpu 0:

Backtrace:

0x0009BCF0 0x0009C694 0x00029EA0 0x000AFA90 0x000B32F8

Proceeding back via exception chain:

Exception state (sv=0x22139780)

PC=0x00CE23B0; MSR=0x00009030; DAR=0x0000003C; DSISR=0x40000000; LR=0x00CC6408; R1=0x22166A60; XCP=0x0000000C (0x300 - Data access)

Backtrace:

0x00CE2424 0x00CC6408 0x00CCBA04 0x00CCBDE4 0x0037D9C8 0x0037AC9C

0x00094798 0x0002C200 0x00024CFC 0x000B364C 0x743E3C2F

backtrace terminated - frame not mapped or invalid: 0xBFFECF40



Kernel loadable modules in backtrace (with dependencies):

com.apple.ATIRadeon9700(5.3.6)@0xcb1000->0xd0dfff

dependency: com.apple.iokit.IONDRVSupport(1.7.1)@0x784000

dependency: com.apple.iokit.IOPCIFamily(2.5)@0x74a000

dependency: com.apple.iokit.IOGraphicsFamily(1.7.1)@0x75e000

Exception state

is it worth noting , that i removed the case and looked at the motherboard , there are a few caps bulging but nothing leaking? could this be the root of all my problems? i can use the imac for quite some time before it actually crashes and when i tested the ram using remeber i got a error so i dont know what to think lol its such a good machine is it worth buying new ram from a guranteed source OR are all these 'bad ram , bad hard drive ' just symptoms of the bad caps? thanks
     
Waragainstsleep
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Jul 14, 2011, 06:07 PM
 
That is highly likely to be your problem. It looks like the GPU is misbehaving. I have seen that happen due to bad caps. On the other hand the VRAM tends to fail on these too. Have you ever seen strange patterns of artefacts across the screen? Typically they are a pink/purple-ish colour.

Bulging caps can be replaced. Its time consuming if you aren't well practiced or equipped but its not that hard.
I have plenty of more important things to do, if only I could bring myself to do them....
     
lordjmorris  (op)
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Jul 14, 2011, 06:16 PM
 
the screen has malfunctioned once or twice but if i log out or reset the mac it dont do it again. ive got one stick of 512 in at the minute , i have another 512 stick and when i put that one in , it boots - if it wants lol but the system does not state it has 1gb , it just stays at 512.

the majority of the time when i get a kernel panic , its just loads of numbers. it mentions iousb at times but thats rare. again maybe this is all due to the caps? when its on it works great but its very temperamental. what would you suggest? thanks for the reply.
     
lordjmorris  (op)
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Jul 14, 2011, 07:08 PM
 
this is my latest panic , it seems to me as if its just giving me random errors now ?

Fri Jul 15 00:02:16 2011


Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x00000000BB4666A0 PC=0x00000000009CDE1C
Latest crash info for cpu 0:
Exception state (sv=0x19865780)
PC=0x009CDE1C; MSR=0x0000B030; DAR=0xBB4666A0; DSISR=0x00200000; LR=0x009CDE00; R1=0x1319FAF0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x009CDE00 0x009CC1A0 0x009C233C 0x009C531C 0x009C2234 0x004F8444
0x004F824C 0x004F8008 0x004F14F8 0x004F0888 0x0037D6E4 0x000B364C 0x352C3078
backtrace terminated - frame not mapped or invalid: 0xF07ADA70

Kernel loadable modules in backtrace (with dependencies):
com.apple.driver.AppleDBDMAAudio(2.5.7f2)@0x9bf000->0x9ecfff
dependency: com.apple.iokit.IOAudioFamily(1.6.5fc3)@0x4e1000
com.apple.iokit.IOAudioFamily(1.6.5fc3)@0x4e1000->0x500fff
dependency: com.apple.kext.OSvKernDSPLib(1.1)@0x4dd000
Proceeding back via exception chain:
Exception state (sv=0x19865780)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x195c1000)
PC=0x92E2F7C8; MSR=0x0200F030; DAR=0x0D12BA18; DSISR=0x0A000000; LR=0x93360CC4; R1=0xF07ADA70; XCP=0x00000030 (0xC00 - System call)

BSD process name corresponding to current thread: iTunes

Mac OS version:
9G66

Kernel version:
Darwin Kernel Version 9.6.0: Mon Nov 24 17:39:01 PST 2008; root:xnu-1228.9.59~1/RELEASE_PPC
System model name: PowerMac8,2
panic(cpu 0 caller 0xFFFF0003): 0x300 - Data access
Latest stack backtrace for cpu 0:
Backtrace:
0x0009BCF0 0x0009C694 0x00029EA0 0x000AFA90 0x000B32F8
Proceeding back via exception chain:
Exception state (sv=0x19865780)
PC=0x009CDE1C; MSR=0x0000B030; DAR=0xBB4666A0; DSISR=0x00200000; LR=0x009CDE00; R1=0x1319FAF0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x009CDE00 0x009CC1A0 0x009C233C 0x009C531C 0x009C2234 0x004F8444
0x004F824C 0x004F8008 0x004F14F8 0x004F0888 0x0037D6E4 0x000B364C 0x352C3078
backtrace terminated - frame not mapped or invalid: 0xF07ADA70

Kernel loadable modules in backtrace (with dependencies):
com.apple.driver.AppleDBDMAAudio(2.5.7f2)@0x9bf000->0x9ecfff
dependency: com.apple.iokit.IOAudioFamily(1.6.5fc3)@0x4e1000
com.apple.iokit.IOAudioFamily(1.6.5fc3)@0x4e1000->0x500fff
dependency: com.`
     
AKcrab
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Join Date: Apr 2001
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Jul 14, 2011, 11:20 PM
 
It's the capacitors. Your machine is going to die.
     
Waragainstsleep
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Jul 15, 2011, 04:24 AM
 
The dodgy caps are screwing up power distribution throughout your machine. You need to replace them or the logic board.
I have plenty of more important things to do, if only I could bring myself to do them....
     
Eriamjh
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Jul 17, 2011, 10:17 PM
 
Time to move to an intel iMac.

I'm a bird. I am the 1% (of pets).
     
TomR
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Jul 22, 2011, 06:15 PM
 
Originally Posted by Eriamjh View Post
Time to move to an intel iMac.

I'm typing this on a PPC G4 Mini. Got it brand new when it came out. Runs 24/7 and never lets me down. LOVE this machine!
     
   
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