I found out how the AMD 7840 maps physical address to RAM chip. One RAM chip is channel A, the other is Channel B. The LSB bit of the 64 bit address selects the Channel A/B.
Oo, very nice. I can check this with the rest of my results. Thanks a bunch!
It’s less that running them disturbs a properly working one but that it causes a marginal one to fail.
Yea, this seems fair.
I am really looking forward to lpcamm, ddr5 sodimms are running pretty close to the limit even if they are working, those traces are just too damn long.
I wish consumer CPUs/memory would get ECC by default. Doubt that’s going to happen anytime soon.
Same, especially since there aren’t a whole lot of parts missing. Unfortunately it seems like you can’t have ecc in lpcamm and you can’t have lpddr in camm (that can have ecc) so that sucks. From the 2 I personally would go with lpddr but sucks that you have to choose.
Quick update: Framework support recently asked me to reset the mainboard by pressing the center button 10 times, which I did, but the random restarts are still happening. I also tried removing the internal Wi-Fi adapter and using a USB dongle, but that didn’t help either.
Although I’ve already run memtest86+ overnight twice without any issues, I might try it again given all the recent focus on RAM testing. However, since Framework said they’d escalate this issue, I expected more concrete feedback on the logs I submitted—instead, I’ve only received more general troubleshooting steps.
At this point, I’ve exhausted most options on my end, and everything still suggests a hardware or mainboard fault. Hoping they’ll take the next step soon. I’ll keep everyone posted.
Hi, I think we have a discussion for the same issue on this post. I ran through a roughly two months process with Framework support for diagnostic, leading to a mainboard replacement.
The point is that it could be barely anything before the mainboard - so you have to test everything to come to the conclusion of a faulty mainboard.
To help, I gave a summary of the steps I went through here.
Hopping this could help you find faster what you have, and eventually shorter the support processes.