Bug 9451

Summary:	sensors says "No sensors found"
Product:	Drivers	Reporter:	Stefan Richter (stefanr)
Component:	Hardware Monitoring	Assignee:	Rafael J. Wysocki (rjwysocki)
Status:	CLOSED INVALID
Severity:	normal	CC:	jdelvare
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.24-rc3	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	9243
Attachments:	output of "strace sensors" on the MSI PC output of "strace sensors" on the Apple PC (x86-64)

Description Stefan Richter 2007-11-24 09:38:02 UTC

Most recent kernel where this bug did not occur: 2.6.23
Distribution: Gentoo
Hardware Environment: two different i945 based PCs (MSI and Apple)
Problem Description: sensors says "No sensors found" even though all respective modules are loaded, based on configurations which worked under 2.6.23.

Reported at lm-sensors and lkml:  http://lkml.org/lkml/2007/11/24/54

Comment 1 Jean Delvare 2007-11-24 09:57:11 UTC

Please attach the output of "strace sensors" and the contents of /proc/ioports for both machines under 2.6.24-rc3.

Comment 2 Stefan Richter 2007-11-24 10:20:54 UTC

Created attachment 13734 [details]
output of "strace sensors" on the MSI PC

a) on the MSI PC:
strace sensors attached, /proc/ioports below:

0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-006f : keyboard
0070-0077 : rtc
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : 0000:00:1f.1
01f0-01f7 : 0000:00:1f.1
  01f0-01f7 : ide0
0295-0296 : w83627ehf
  0295-0296 : w83627ehf
0376-0376 : 0000:00:1f.1
03c0-03df : vesafb
03f6-03f6 : 0000:00:1f.1
  03f6-03f6 : ide0
0400-047f : 0000:00:1f.0
  0400-0403 : ACPI PM1a_EVT_BLK
  0404-0405 : ACPI PM1a_CNT_BLK
  0408-040b : ACPI PM_TMR
  0428-042f : ACPI GPE0_BLK
0480-04bf : 0000:00:1f.0
0500-051f : 0000:00:1f.3
0cf8-0cff : PCI conf1
b000-bfff : PCI Bus #01
  b000-bfff : PCI Bus #02
c000-cfff : PCI Bus #04
  cf00-cf1f : 0000:04:00.0
    cf00-cf1f : e1000
d000-dfff : PCI Bus #03
e000-efff : PCI Bus #05
  e000-e0ff : PCI CardBus #06
  e400-e4ff : PCI CardBus #06
  ed00-ed7f : 0000:05:04.0
f500-f50f : 0000:00:1f.2
  f500-f50f : libata
f600-f603 : 0000:00:1f.2
  f600-f603 : libata
f700-f707 : 0000:00:1f.2
  f700-f707 : libata
f800-f803 : 0000:00:1f.2
  f800-f803 : libata
f900-f907 : 0000:00:1f.2
  f900-f907 : libata
fa00-fa0f : 0000:00:1f.1
  fa00-fa07 : ide0
  fa08-fa0f : ide1
fb00-fb1f : 0000:00:1d.3
  fb00-fb1f : uhci_hcd
fc00-fc1f : 0000:00:1d.2
  fc00-fc1f : uhci_hcd
fd00-fd1f : 0000:00:1d.1
  fd00-fd1f : uhci_hcd
fe00-fe1f : 0000:00:1d.0
  fe00-fe1f : uhci_hcd
ff00-ff07 : 0000:00:02.0

Comment 3 Stefan Richter 2007-11-24 10:23:51 UTC

Created attachment 13735 [details]
output of "strace sensors" on the Apple PC (x86-64)

a) on the Apple PC (x86-64):
strace sensors attached, /proc/ioports below:

0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-006f : keyboard
0070-0077 : rtc
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : 0000:00:1f.1
01f0-01f7 : 0000:00:1f.1
  01f0-01f7 : ide0
0300-031f : applesmc
0376-0376 : 0000:00:1f.1
03c0-03df : vesafb
03f6-03f6 : 0000:00:1f.1
  03f6-03f6 : ide0
0400-047f : 0000:00:1f.0
  0400-0403 : ACPI PM1a_EVT_BLK
  0404-0405 : ACPI PM1a_CNT_BLK
  0408-040b : ACPI PM_TMR
  0410-0415 : ACPI CPU throttle
  0420-0420 : ACPI PM2_CNT_BLK
  0428-042f : ACPI GPE0_BLK
0500-053f : 0000:00:1f.0
0cf8-0cff : PCI conf1
1000-1fff : PCI Bus #01
  1000-10ff : 0000:01:00.0
    1000-10ff : sky2
2020-202f : 0000:00:1f.2
  2020-202f : libata
2040-205f : 0000:00:1d.3
  2040-205f : uhci_hcd
2060-207f : 0000:00:1d.2
  2060-207f : uhci_hcd
2080-209f : 0000:00:1d.1
  2080-209f : uhci_hcd
20a0-20bf : 0000:00:1d.0
  20a0-20bf : uhci_hcd
20c0-20cf : 0000:00:1f.1
  20c0-20c7 : ide0
  20c8-20cf : ide1
20d0-20d7 : 0000:00:1f.2
  20d0-20d7 : libata
20d8-20df : 0000:00:1f.2
  20d8-20df : libata
20f0-20f7 : 0000:00:02.0
20f8-20fb : 0000:00:1f.2
  20f8-20fb : libata
20fc-20ff : 0000:00:1f.2
  20fc-20ff : libata
efa0-efbf : 0000:00:1f.3
  efa0-efbf : i801_smbus

Comment 4 Jean Delvare 2007-11-24 11:01:22 UTC

Both /proc/ioports look OK, but the strace outputs do not: for some reason, libsensors doesn't enter the hwmon class device directories. Do you have CONFIG_SYSFS_DEPRECATED set in your kernel config, or not? What version of sysfsutils are you using?

Comment 5 Stefan Richter 2007-11-24 12:06:49 UTC

I have CONFIG_SYSFS_DEPRECATED switched off, but I had 2.6.23 configured the same way.  I have Gentoo's sysfsutils 1.3.0-r1 installed on both PCs.  I am going to try what happens if I switch to sysfsutils 2.1.0.

Comment 6 Stefan Richter 2007-11-24 12:13:55 UTC

Works with sysfsutils 2.1.0.  Thanks, this can then probably be closed as not_a_bug.

Comment 7 Rafael J. Wysocki 2007-11-24 12:28:19 UTC

Closed, thanks.