Bug 435062

Summary:	System monitor sensor reports number of CPUs as 0 (zero)
Product:	[Plasma] plasmashell	Reporter:	Patrick Silva <bugseforuns>
Component:	System Monitor widgets	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED FIXED
Severity:	normal	CC:	ahiemstra, nate, notmart
Priority:	NOR
Version:	master
Target Milestone:	1.0
Platform:	Neon
OS:	Linux
Latest Commit:	https://invent.kde.org/plasma/ksystemstats/commit/8208a1510af95263c7cabd5d01a849018a1e1f99	Version Fixed In:	5.22
Sentry Crash Report:
Attachments:	screenshot contents of /proc/cpuinfo

Description Patrick Silva 2021-03-28 13:12:29 UTC

Created attachment 137130 [details]
screenshot

SUMMARY
CPU of my laptop is intel i3 3110m.

https://ark.intel.com/content/www/br/pt/ark/products/65700/intel-core-i3-3110m-processor-3m-cache-2-40-ghz.html

According to system monitor sensor, the number of CPUs on my system is zero.
See the attached screenshot please.

EXPECTED RESULT
system monitor sensor should detect the number of CPUs correctly.

SOFTWARE/OS VERSIONS
Operating System: KDE neon Unstable Edition
KDE Plasma Version: 5.21.80
KDE Frameworks Version: 5.81.0
Qt Version: 5.15.2
Graphics Platform: Wayland

Comment 1 Arjen Hiemstra 2021-03-28 13:35:48 UTC

Can you attach the contents of /proc/cpuinfo?

Comment 2 Patrick Silva 2021-03-28 13:51:37 UTC

Created attachment 137132 [details]
contents of /proc/cpuinfo

Comment 3 Bug Janitor Service 2021-04-29 09:17:50 UTC

A possibly relevant merge request was started @ https://invent.kde.org/plasma/ksystemstats/-/merge_requests/3

Comment 4 Arjen Hiemstra 2021-04-29 09:29:33 UTC

Git commit 8208a1510af95263c7cabd5d01a849018a1e1f99 by Arjen Hiemstra.
Committed on 29/04/2021 at 09:17.
Pushed by ahiemstra into branch 'master'.

Fix off-by-one for cpuCount on Linux

cpuCount is based on cpu indices, which means we will be one lower than
the actual CPU count. So correct for that.
FIXED-IN: 5.22

M  +4    -0    plugins/cpu/linuxcpuplugin.cpp

https://invent.kde.org/plasma/ksystemstats/commit/8208a1510af95263c7cabd5d01a849018a1e1f99

Comment 5 Patrick Silva 2021-05-04 11:45:08 UTC

This bug persists on neon unstable.

Operating System: KDE neon Unstable Edition
KDE Plasma Version: 5.21.80
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2
Graphics Platform: X11

Comment 6 Patrick Silva 2021-05-04 20:48:48 UTC

ops, fixed with updates installed a few minutes ago. Sorry for noise.