Bug 570956

Summary:	sys-apps/lm_sensors-3.4.0: /usr/sbin/fancontrol: line 552: echo: write error: Device or resource busy
Product:	Gentoo Linux	Reporter:	Dimitrios Semitsoglou-Tsiapos <kmhzsem>
Component:	Current packages	Assignee:	Thomas Deutschmann (RETIRED) <whissi>
Status:	RESOLVED NEEDINFO
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	/etc/fancontrol fancontrol output

Description Dimitrios Semitsoglou-Tsiapos 2016-01-05 12:59:07 UTC

sys-apps/lm_sensors-3.4.0 and sys-apps/lm_sensors-3.3.5 both crash when the system goes into suspend.

It appears that this happens because my pwm device becomes temporarily unavailable.

--

Motherboard: Gigabyte H97M-D3H
BIOS Version: F6


Reproducible: Always

Steps to Reproduce:
1. Start fancontrol
2. echo mem > /sys/power/state
3. Resume the system

Comment 1 Dimitrios Semitsoglou-Tsiapos 2016-01-05 12:59:21 UTC

Created attachment 421954 [details]
/etc/fancontrol

Comment 2 Dimitrios Semitsoglou-Tsiapos 2016-01-05 12:59:51 UTC

Created attachment 421956 [details]
fancontrol output

Comment 3 Thomas Deutschmann (RETIRED) gentoo-dev

2016-08-09 14:10:33 UTC

Well, this is probably a "it87" driver issue (at least in 2015 no support for suspend/resume was implemented). Fancontrol is just a Bash script...

Have you tried to reproduce the issue with a recent kernel? Workaround:

1. Stop fancontrol service on suspend

2. On resume reload it87 module and start fancontrol again

Comment 4 Dimitrios Semitsoglou-Tsiapos 2017-08-09 15:23:00 UTC

Apologies for the late reply. I no longer have access to the problematic hardware, so it may be best to close this.