Ubuntu freezes completely randomly, no response whatsoever...

[buddyd16]

Are you using the 64 bit version of flash?

I was having this exact issue seemingly random lockups and no ability to do any of the keyboard commands to restart or get into a terminal. After messing around more I found that the lockups happened pretty much anytime an embedded flash video was loaded. I used the flash aid firefox plugin to completely remove flash and install the 32 bit version and now I have not experienced any lock ups.

[gwu777]

After a few weeks avoiding slot 2, no more freezes, my motherboard does have a fault. I am now confuse on how to know if I am running dual channel mode, how can I know this? I do not believe memtest to be the way to know this... Ideas would be appreciated...

Here are the various reading from the memtest if it gives anyone insight:
L1 cache 64K 52696Mb/s
L2 cache 512K 17007Mb/s
L3 cache 6144K 9237Mb/s
Memory 3838M 4762Mb/s

Thank you for you continuous help

[gwu777]

Marking this thread as solved as my mothreboard seems to be faulty. Change the ram's slot and now everything is fine. Thank you all for your help.

I now really would like to know if I am running dual channel or not. I shall open a new thread.

[Jouke74]

Marking this thread as solved as my mothreboard seems to be faulty. Change the ram's slot and now everything is fine. Thank you all for your help.

I now really would like to know if I am running dual channel or not. I shall open a new thread.

- Memtest should be error free, or indeed random freezes will occur.

- If you want to use dual channel you should use one black and one bluse channel A1+B1, or both (A1+2, vs B1+B2).

- Check also if the Phenom can run on the desired memory frequency. The old Phenoms could not run on anything higher than 800mhz if all 4 dimms were used. This should be in the motherboard manual as well.

- Make sure the voltage and settings of RAM are correct.