Thanks for updating it was fixed by running BIOS diagnostic test. It
likely forced BIOS to update the memory configuration which corrected
memory maps reported to OS.
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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I got it fixed! In the BIOS I ran quick diagnostic test (includes a
memory check). No problems were indicated, but the next time I booted
the machine (using Ubuntu 21.04 on a USB stick) the memory seemed normal
again. All memory available. And it has worked ever since, independent
on whether I
** Attachment added: "/proc/meminfo"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1944019/+attachment/5526114/+files/meminfo.txt
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https://bugs.launchpad.net/bugs/1944019
** Attachment added: "nonworking dmesg"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1944019/+attachment/5526116/+files/nonworking-dmesg.txt
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** Attachment added: "Working dmesg"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1944019/+attachment/5526115/+files/working-dmesg.txt
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https://bugs.launchpad.net/bugs/1944019
