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Odd Ubuntu problem


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#16 Haggis

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Posted 11 February 2013 - 17:06

It was purely for ruling out anything and making 100% sure it was the same bug


#17 +Karl L.

Karl L.

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Posted 12 February 2013 - 01:39

It was purely for ruling out anything and making 100% sure it was the same bug


Although I agree with you in theory, that actually wouldn't confirm anything in this case. Whether its a kernel bug or firmware bug (despite the fact that its likely the latter), using a different communications protocol more-or-less negates the effect. Since the firmware is emulating ATA instead of its native AHCI, a different software stack is in use in the firmware. To communicate with the hard disk using this protocol, the kernel will load a different driver (or at least use a different part of the same driver). Although there will obviously be some of the same code used in both firmware and the kernel, because one cannot be tested without the other (on the same hardware, at least), its not useful for debugging. Therefore I assumed that you were suggesting changing the hard disk mode to compatibility as a mitigation technique, not a testing procedure. I apologize for my misinterpretation, but I still stand by my point that it will not help debug the problem.

#18 OP Mindovermaster

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Posted 12 February 2013 - 03:34

Well, yeah, I read around and changing from AHCI will temporarily fix it, but is no guarantee to the fix.

#19 OP Mindovermaster

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Posted 24 February 2013 - 01:08

OK, It's doing it again, on my same WD Black 1.5TB drive. Could it have been wrongly formatted?

Looking at ATA4:

david@david-desktop:~$ cat /var/log/dmesg | grep "ata4"
[    0.484776] ata4: SATA max UDMA/133 abar m2048@0xf7e16000 port 0xf7e16280 irq 43
[    0.804201] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    0.806485] ata4.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[    0.806487] ata4.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[    0.806488] ata4.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[    0.808607] ata4.00: ATA-8: WDC WD1501FASS-00W2B0, 05.01D05, max UDMA/133
[    0.808610] ata4.00: 2930277168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
[    0.811492] ata4.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
[    0.811496] ata4.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
[    0.811499] ata4.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
[    0.813656] ata4.00: configured for UDMA/133

I'm back to Ubuntu after being on Debian for about a week, really not for me.

#20 +Karl L.

Karl L.

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Posted 24 February 2013 - 07:41

OK, It's doing it again, on my same WD Black 1.5TB drive. Could it have been wrongly formatted?


It is very unlikely the problem is due to the way you partitioned for formatted it. From your latest dmesg log it still looks like a firmware problem. Its possible that a newer kernel has a work-around for the bug (assuming that it is actually a firmware-related problem), but I don't really have any new suggestions. If you're running Precise, you could try installing the backported Quantal kernel (3.5), but I have no evidence that will resolve anything.

I'm back to Ubuntu after being on Debian for about a week, really not for me.


Use what you like best. I'm not here to start a crusade. (In fact "No Distro Trolling is allowed" is boldly stated in the "Guidelines & pointers for this section" post pinned at the top of our subforum. Even if I was not of that persuasion to begin with I would still respect the rules of the forum.)

Edit: I find it pretty ironic that the sentence immediately after I stated that I had no more suggestions is a suggestion. I plead the fifth.