Lemur Upgrade to 12.10 gone wrong or bad timing hardware failure

I downloaded and did an inplace upgrade from 12.04 to 12.10 last night. It all seemed to go fine but when I restarted the system it went immediately into memtest and started spitting memory errors during the random number test (@ ~44% memtest completion). The errors were still screaming by after I left it run overnight (8 hours later)

I'm try to determine if this is upgrade related or an unfortunate hardware failure coincidence.

Also, regardless of the cause, I would like to get a functioning system back. What info would you need to help me troubleshoot?

I'm running a 64-bit system on a Lemur laptop(model:lemu2) with 8GB RAM (I think - I haven't checked in a while)

Thanks
DNAtsol

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Originally Posted by DNAtsol1

I downloaded and did an inplace upgrade from 12.04 to 12.10 last night. It all seemed to go fine but when I restarted the system it went immediately into memtest and started spitting memory errors during the random number test (@ ~44% memtest completion). The errors were still screaming by after I left it run overnight (8 hours later)

I'm try to determine if this is upgrade related or an unfortunate hardware failure coincidence.

Also, regardless of the cause, I would like to get a functioning system back. What info would you need to help me troubleshoot?

I'm running a 64-bit system on a Lemur laptop(model:lemu2) with 8GB RAM (I think - I haven't checked in a while)

Thanks
DNAtsol

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Go into the Grub menu (by holding shift immediately after the System76 Splash screen), then make sure to choose a non-MemTest option. See if it will go into Ubuntu.

If MemTest it spitting errors, then it's likely failed RAM (Software can't cause RAM prblems), so i would open a ticket on our website: https://www.system76.com/my-account

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Originally Posted by isantop

Go into the Grub menu (by holding shift immediately after the System76 Splash screen), then make sure to choose a non-MemTest option. See if it will go into Ubuntu.

If MemTest it spitting errors, then it's likely failed RAM (Software can't cause RAM prblems), so i would open a ticket on our website: https://www.system76.com/my-account

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Thanks. Just to complicate things, I did s you suggested and while trying to boot to GRUB the screen flashed 3 "error: file not found" before bringing up the GRUB list. There were only 2 options, both memtest. 1 for memtest and 1 for memtest with console)

So, it might still be an updating software error (- corrupted grub?). If memtest is the only option it can't really boot to the new or previous Ubuntu) but I tend to agree that it's likely a HW failure. However, before I open a ticket I would like to be sure.

So, can I edit GRUB or point to an externally located GRUB (say on a USB) and try to boot from there?

Thanks
DNAtsol

Quote:

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Originally Posted by DNAtsol1

Thanks. Just to complicate things, I did s you suggested and while trying to boot to GRUB the screen flashed 3 "error: file not found" before bringing up the GRUB list. There were only 2 options, both memtest. 1 for memtest and 1 for memtest with console)

So, it might still be an updating software error (- corrupted grub?). If memtest is the only option it can't really boot to the new or previous Ubuntu) but I tend to agree that it's likely a HW failure. However, before I open a ticket I would like to be sure.

So, can I edit GRUB or point to an externally located GRUB (say on a USB) and try to boot from there?

Thanks
DNAtsol

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Okay. What I'm guessing happened is that the RAM failed at some point durig the upgrade, then that caused the upgrade to fail. Go ahead and open a ticket on our website, and we'll take care of it there.

My pang9 has the same problem, memtest had errors at 44%, even after putting in replacement ram and moving it to the second slot. I think it must be a software issue, one that unfortunately causes me kernel panics.

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Originally Posted by LeeS87

My pang9 has the same problem, memtest had errors at 44%, even after putting in replacement ram and moving it to the second slot. I think it must be a software issue, one that unfortunately causes me kernel panics.

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were you able to resolve the issue?? I just had system76 ship RAM replacement and if that is not the issue then I'll be looking for a next step.

It appears that the ramtest errors have something to do with the test, since after replacing the ram, I reinstalled Ubuntu, and while the test still has the same results, Ubuntu has not had a kernel panic since. So, maybe memtest86 no longer works properly.

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Originally Posted by LeeS87

It appears that the ramtest errors have something to do with the test, since after replacing the ram, I reinstalled Ubuntu, and while the test still has the same results, Ubuntu has not had a kernel panic since. So, maybe memtest86 no longer works properly.

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Are you using the version included in Ubuntu, or the one downloaded form memtest.org? I've always found the one included with the Ubuntu installation to be a bit buggy on modern hardware, and need to use the later version from the Memtest Website.

I was using the one in Ubuntu, and while I couldn't figure out how to download the other one to usb, I did discover that there is an Ubuntu specific memtest bug that would make it fail around 44% on Sandy Bridge (I'm guessing the bug also exists on Ivy Bridge). This still doesn't explain why I get specific crashes, the most likely crash being when the computer is left on for a long period of time.

OK, so the Memtest off of the 12.10 is bad. I have gotten similar errors from the one I got from the lubuntu disk, version 4.20, I think. Is the version off the web site good?