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Old Nov 12, 2008, 09:34 AM   #1
chas0001
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Location: Alicante, SPAIN
PowerMac G5 Feeeze

I have the weirdest of problems. My computer, a Powermac G5, Dual 2.0Ghz, 1st Edition Released Oct 2003, will just freeze. It usually happens within 5 minutes of booting into the operating system. I am also unable to boot from the Leopard or Tiger DVD's to try and install a fresh copy of the OS as they freeze during the install.

This is what I have tried so far, but to no avail :

Reseating the RAM and Graphics Card
Reseting the Power Management (PMU)
Reseting the PRAM.

Now this is the even stranger thing. I installed a copy of PowerPC Ubuntu Linux 8.04 and it works fine. No problems whatsoever . This makes me think that it is unlikely to be a hardware issue.

Has anybody had the same problem?
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Old Nov 13, 2008, 10:44 PM   #2
bash54
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G5 freeze

I experienced the same symptoms in my dual 2.7 G5, couldn't figure it out, and finally caved in and took it to Apple for an $85 diagnostic last week........only to be told that it's a hardware failure, either a logic board or bad processor, and that it would cost over $1000 to fix and determine exactly what is wrong. WTF?!? Needless to say, I opted not to go with the repair and am hoping to find a more reasonable solution. So if anyone has any advice it would be much appreciated. Good luck Chas
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Old Nov 13, 2008, 11:32 PM   #3
leekohler
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This has happened to me before and it was the result of bad RAM. Try removing one pair of RAM and restarting. Then try it with the rest. If it stays on and runs fine, you're holding two bad RAM sticks in your hand.
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Old Feb 19, 2009, 05:04 PM   #4
Gordy-B
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My dual 2.0 G5 (2003/early 2004?) does this too, it can be on for a day or so, or for an hour or so, doesn't seem to make any odds what its doing (although it doesn't seem to like uTorrent much) it will on occasion freeze - nothing works except the mouse. From time to time, the screen will grey out and the multilingual 'you've crashed' message will pop up also.

I've just reset the PRAM in the hope this will help, and swapped round/reseated the RAM and graphics cards.

In Open Firmware, I get the following when typing a ? and hitting enter:

something like 'invalid memory at address' (forgot to write that bit down!) and
%SSR0 00000000. ff866764 %SSR1 10000000. 02006030

The ff866764 changed to a different value every time (out of 4 times) I did this with the RAM in different slots (same pairs, obviously) and one pair at a time.

The crash details from the last crash are :

Thu Jan 1 01:01:12 1970


Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x000000006A037FFF PC=0x0000000036D7B76C
Latest crash info for cpu 0:
Exception state (sv=0x1e747c80)
PC=0x36D7B76C; MSR=0x00009030; DAR=0x6A037FFF; DSISR=0x00200000; LR=0x36D7B76C; R1=0x1E58BC00; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x36D7B6A0 0x36D8BC68 0x36D2BEC4 0x003594B0 0x00358714 0x003587C8
0x000B0E54
Kernel loadable modules in backtrace (with dependencies):
com.apple.driver.AirPortBrcm43xx(361.24.1)@0x36d22000->0x36e4efff
dependency: com.apple.iokit.IO80211Family(214.1)@0x26eff000
dependency: com.apple.iokit.IOPCIFamily(2.5)@0x1e631000
dependency: com.apple.iokit.IONetworkingFamily(1.6.1)@0x267d5000
Proceeding back via exception chain:
Exception state (sv=0x1e747c80)
previously dumped as "Latest" state. skipping...
Exception state (sv=0xbed500)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

BSD process name corresponding to current thread: kernel_task

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: PowerMac7,2


Unresolved kernel trap(cpu 1): 0x300 - Data access DAR=0x000000001F180FF8 PC=0x00000000000B49EC
Latest crash info for cpu 1:
Exception state (sv=0x26a90c80)
PC=0x000B49EC; MSR=0x00009030; DAR=0x1F180FF8; DSISR=0x42000000; LR=0x0015E548; R1=0x1E6E7670; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x0015E40C 0x00165D50 0x0016744C 0x00163938 0x00157CAC 0x0015A090
0x0015A188 0x001442DC 0x00130C14 0x0012D094 0x0012D774 0x0012DA10 0x000B0E54
Proceeding back via exception chain:
Exception state (sv=0x26a90c80)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x1e53e280)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

BSD process name corresponding to current thread: kernel_task
panic(cpu 1 caller 0xFFFF0003): 0x300 - Data access
Latest stack backtrace for cpu 1:
Backtrace:
0x0009BCF0 0x0009C694 0x00029EA0 0x000AFA90 0x000B32F8
Proceeding back via exception chain:
Exception state (sv=0x26a90c80

System configuration:

Model: PowerMac7,2, BootROM 5.1.4f0, 2 processors, PowerPC 970 (2.2), 2 GHz, 1 GB
Graphics: kHW_ATIr350Item, ATY,R350, spdisplays_agp_device, 128 MB
Memory Module: DIMM0/J11, 256 MB, DDR SDRAM, PC3200U-30330
Memory Module: DIMM1/J12, 256 MB, DDR SDRAM, PC3200U-30330
Memory Module: DIMM2/J13, 256 MB, DDR SDRAM, PC3200U-30330
Memory Module: DIMM3/J14, 256 MB, DDR SDRAM, PC3200U-30330
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x4E), Broadcom BCM43xx 1.0 (4.170.25.8)
Modem: MicroDash, UCJ, V.92, 1.0F, APPLE VERSION 2.6.7
Serial ATA Device: Hitachi HDT725032VLA360, 298.09 GB
Serial ATA Device: ST3160023AS, 149.05 GB
Parallel ATA Device: SONY DVD RW AW-G170A
USB Device: External HDD, (null) mA
USB Device: Hub in Apple Extended USB Keyboard, (null) mA
USB Device: Photosmart D6100 series, (null) mA
USB Device: Apple Optical USB Mouse, (null) mA
USB Device: Apple Extended USB Keyboard, (null) mA


Any ideas? Is the invalid memory at address thing in Open Firmware normal? Any idea what %SRR0 and %SSR1 refer to? (Please don't say processors, one/both is ruined! )
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