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Description: Ubuntu 22.04.1 LTS
Release: 22.04
Kernel: linux-image-5.15.0-48-generic
Occasionally (twice today) a clean boot has left only 2GB of 16GB RAM usable.
Looking at syslog - its clear the memory is being reserved for some reason by
the kernel:
Memory: 2558908K/16524372K available (16393K kernel code, 4377K rwdata,
10804K rodata, 3224K init, 6580K bss, 13965204K reserved, 0K cma-
reserved)
Usually the amount reserved is:
Sep 22 11:35:57 pdlap01 kernel: [ 0.099454] Memory: 15926800K/16524372K
available (16393K kernel code, 4377K rwdata, 10804K rodata, 3224K init, 6580K
bss, 597312K reserved, 0K cma-reserved)
Been using linux on this device for years - only noticed since 22.04.1.
Both times today when it reserved 13GB - it was connected to the dell dock
(dont know if that is relevant yet).
No recent changes other than security updates - but I noticed it did this a
month or so ago too - but hoped it was a one off.
** Affects: linux-hwe-5.15 (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
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13.3GB reserved by kernel sometimes on clean boot
https://bugs.launchpad.net/bugs/1990587
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