I have seen this "negative RAM" bug in Conky, sometimes in a distro, sometimes in other distros, for more than 1 year, now.
First time, I have seen this bug in PCLinuxOS, August 2019 ─ but its team worked and corrected it.
Then, it happened in openSUSE Tumbleweed, at least in December 2019.
I cannot discard other cases, last year, because I didn't use a standard "label" to it in my screenshots, back then, and it is hard to find out now.
This year, I have found many cases ─ and the RAM usage at startup, when Conky turned back from "negative" to positive amount of RAM:
Code:
2019-08-16 - PCLinuxOS
2019-08-16 - PCLinuxOS
2019-08-16 - PCLinuxOS
2019-08-16 - PCLinuxOS
2019-08-29 - openSUSE
2019-12-19 - openSUSE 486 MiB
2019-12-19 - openSUSE 486 MiB
2020-01-07 - openSUSE 482 MiB
2020-07-16 - Fedora 607 MiB
2020-07-16 - Arch 531 MiB
2020-07-16 - Void 478 MiB
2020-07-16 - Void 478 MiB
2020-07-19 - Mageia 601 MiB
2020-07-23 - Mageia 597 MiB
2020-07-23 - Fedora
2020-07-23 - Arch 516 MiB
2020-07-23 - Arch 519 MiB
2020-07-29 - Arch 518 MiB
2020-08-01 - Void 491 MiB
2020-08-01 - Mageia 613 MiB
2020-08-01 - Fedora 673 MiB
2020-08-01 - Fedora 673 MiB
2020-08-01 - Arch 531 MiB
2020-08-02 - Fedora 662 MiB
2020-08-02 - Fedora 660 MiB
2020-08-02 - Arch 533 MiB
2020-08-19 - Arch 535 MiB
2020-08-19 - Arch 536 MiB
2020-08-22 - Arch 546 MiB
2020-09-02 - Arch 535 MiB
2020-09-04 - Arch 546 MiB
2020-09-19 - Arch 556 MiB
2020-09-19 - Arch 562 MiB
2020-09-24 - Arch 553 MiB
2020-10-04 - Arch 554 MiB
2020-10-05 - Arch 556 MiB
2020-10-05 - Arch 559 MiB
Back in July-August 2020, it stopped in Fedora, openSUSE, Mageia. ─ Now, Conky says they all use 900+ MiB RAM at startup ─ and that Void uses 700+ MiB RAM at startup.
I have never seen "negative" RAM usage in Debian ─ but now Conky says Debian is using 900+ MiB RAM at startup (
and I don't believe it).
Just in Arch Conky keeps showing "negative" RAM usage ─ but at least, it doesn't show 900+ MiB in Arch.
EDIT
Negative RAM usage - Bug # 877 - August 2019
https://github.com/brndnmtthws/conky/issues/877
High CPU usage with conky (...) - Bug #876 - August 2019
https://github.com/brndnmtthws/conky/issues/876
Fix for #877 #878 - Aug 2019
https://github.com/brndnmtthws/conky/pull/878
Negative / too low memory reading - Bug #886 - September 2019
https://github.com/brndnmtthws/conky/issues/886