Lemur Upgrade to 12.10 gone wrong or bad timing hardware failure

[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

[isantop]

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

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

[DNAtsol1]

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

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

[isantop]

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

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.

[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.

[DNAtsol1]

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.

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.

[DNAtsol1]

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

OK, I received my memory a little while ago and finally have time to install and try to recover my machine.

1) how the *bleep* do I get at the memoryon a Lemur Ultrathin? I've taken out all the external screws, the battery, the HDD but something is still catching and preventing me from disassembling the thing (it seems to be caught somewhere near the middle of the mother board or toward the back).

2) assuming I successfully swap the memory how to I start the process of getting the OS upgrade completed if I don't have a Kernel to select in GRUB? I'm hoping I don't lose my home dir since I (stupidly) didn't finish backing up some data so I'm not real keen on doing a fresh install.

Thanks

[DNAtsol1]

quick update: figured out how to replace RAM (Damn you easy to remove keyboard!)

Currently running memtest 4.2 that I assume, based on this discussion, comes from ubuntu. I do not have a cdrom on my machine so..... suggestions?

[isantop]

quick update: figured out how to replace RAM (Damn you easy to remove keyboard!)

Currently running memtest 4.2 that I assume, based on this discussion, comes from ubuntu. I do not have a cdrom on my machine so..... suggestions?

I would borrow a USB CD drive. It's really the best way to ensure that you have a solid, good copy running.

[DNAtsol1]

I would borrow a USB CD drive. It's really the best way to ensure that you have a solid, good copy running.

memtest complete.... so is there a procedure I can go through to complete the upgrade and keep my /home dir? I do not see any kernel in the grub. only memtests.

If I do a fresh install of 12.10 is there some way to prevent an overwrite of /home

Can I run a live version, access the HDD /home data get if off and bring it back later?

finally, if I were to setup a /home partition (assuming I have to a fresh install) how much space would you recommend for the rest of the system on the HDD.

Here's hoping