lshw shows two banks of memory but MAAS is still correctly calculating
the output from lshw. There are twelve occurrences of the line <size
units="bytes">34358689792</size> which is 384GB. I looked up the part
number reported by lshw, 72ASS8G72LZ-2G3B2. According to [1] each DIM
should be 64G, not 32G. There is a commit upstream [2] which adds
support for DDR4 RAM and another [3] which adds support for larger
amounts of RAM found in DDR4 RAM. As [1] says this module is DDR4 I
suspect the version of lshw in Ubuntu needs both these patches.

@dgrosvenor could you try building lshw in rescue mode to confirm?

sudo apt install git gcc make
git clone
sudo ./lshw -xml > lshw.log


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  Lshw incorrectly detects amount of RAM in system

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