"Can't access procfs/sysfs file", but all seems ok ??

"Can't access procfs/sysfs file", but all seems ok ??

[Szakats Istvan]

LM Sensors Group:

I compiled and installed the the latest lm_sensors, enabled i2c in my
kernel an compiled it but it doesn't work. I have i2c 2.8.8 and sysfs
and procfs support compiled in my kernel. The only thing i see wrong i
when i boot intro linux (Mandrake 9.1) the first thing i see are i2c
error messages.
Here's the code:

[szakats@nitro lm_sensors-2.8.8]$ sensors
Can't access procfs/sysfs file
Unable to find i2c bus information;
For 2.6 kernels, make sure you have mounted sysfs and done
'modprobe i2c_sensor'!
For older kernels, make sure you have done 'modprobe i2c-proc'!


[root@nitro lm_sensors-2.8.8]# ls /proc/sys
debug/  dev/  fs/  kernel/  net/  proc/  sunrpc/  vm/
[root@nitro lm_sensors-2.8.8]# grep 'SYSFS' /usr/src/linux/.config
CONFIG_SYSFS=y
[root@nitro lm_sensors-2.8.8]# ls /sys
ls: /sys: No such file or directory   (in the faq it says this
directory should exist ???)


[root@nitro lm_sensors-2.8.8]# i2cdetect -V
i2cdetect version 2.8.8
[root@nitro lm_sensors-2.8.8]# i2cdetect -l  (no output)
[root@nitro lm_sensors-2.8.8]# modprobe i2c_sensor
FATAL: Module i2c_sensor not found.       (it's compiled into the kernel)
[root@nitro lm_sensors-2.8.8]# grep 'I2C' /usr/src/linux/.config
# I2C support
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
# I2C Algorithms
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_ALGOPCF=m
CONFIG_I2C_ALGOPCA=y
# I2C Hardware Bus support
CONFIG_I2C_ALI1535=m
CONFIG_I2C_ALI1563=m
CONFIG_I2C_ALI15X3=m
CONFIG_I2C_AMD756=m
CONFIG_I2C_AMD8111=m
CONFIG_I2C_ELEKTOR=m
CONFIG_I2C_I801=y
CONFIG_I2C_I810=y
CONFIG_I2C_ISA=y
CONFIG_I2C_NFORCE2=y
CONFIG_I2C_PARPORT=y
CONFIG_I2C_PARPORT_LIGHT=y
CONFIG_I2C_PIIX4=m
CONFIG_I2C_PROSAVAGE=y
CONFIG_I2C_SAVAGE4=y
CONFIG_I2C_SIS5595=m
CONFIG_I2C_SIS630=m
CONFIG_I2C_SIS96X=m
CONFIG_I2C_VIA=y
CONFIG_I2C_VIAPRO=y
CONFIG_I2C_VOODOO3=m
CONFIG_I2C_PCA_ISA=y
CONFIG_I2C_SENSOR=y
# Other I2C Chip support
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_I2C_DEBUG_CHIP is not set
# CONFIG_FB_RIVA_I2C is not set
CONFIG_FB_RADEON_I2C=y
[root@nitro lm_sensors-2.8.8]# grep 'SENSOR' /usr/src/linux/.config
CONFIG_I2C_SENSOR=y
CONFIG_SENSORS_ADM1021=y
CONFIG_SENSORS_ADM1025=y
CONFIG_SENSORS_ADM1031=y
CONFIG_SENSORS_ASB100=y
CONFIG_SENSORS_DS1621=y
CONFIG_SENSORS_FSCHER=y
CONFIG_SENSORS_GL518SM=y
CONFIG_SENSORS_IT87=y
CONFIG_SENSORS_LM75=y
CONFIG_SENSORS_LM77=y
CONFIG_SENSORS_LM78=y
CONFIG_SENSORS_LM80=y
CONFIG_SENSORS_LM83=y
CONFIG_SENSORS_LM85=y
CONFIG_SENSORS_LM90=y
CONFIG_SENSORS_MAX1619=y
CONFIG_SENSORS_SMSC47M1=y
CONFIG_SENSORS_VIA686A=y
CONFIG_SENSORS_W83781D=y
CONFIG_SENSORS_W83L785TS=y
CONFIG_SENSORS_W83627HF=y
CONFIG_SENSORS_EEPROM=y
CONFIG_SENSORS_PCF8574=y
CONFIG_SENSORS_PCF8591=y
CONFIG_SENSORS_RTC8564=y
[root@nitro lm_sensors-2.8.8]# vi /boot/log/messages
"Dec 26 13:43:46 nitro kernel: i2c /dev entries driver
Dec 26 13:43:46 nitro kernel: i2c-parport: using default base 0x378
Dec 26 13:43:46 nitro kernel: i2c-pca-isa: i/o base 0x000330. irq 10
Dec 26 13:43:46 nitro kernel: i2c-algo-pca: bus is not idle. status is 0xff
Dec 26 13:43:46 nitro last message repeated 11 times" (this is the
first thing i see when booting)


[root@nitro lm_sensors-2.8.8]# cat /proc/version
Linux version 2.6.9-nitro4 (root@nitro) (gcc version 3.4.2) #1 Sat Dec
25 16:25:24 EET 2004
[root@nitro lm_sensors-2.8.8]# lspcidrake
unknown         : VIA Technologies Inc|VT8377 CPU to PCI Bridge
unknown         : VIA Technologies Inc|PCI-to-PCI Bridge (AGP 2.0/3.0)
saa7134         : Philips Semiconductors|SAA7134
unknown         : VIA Technologies Inc|VT8233A PCI to ISA Bridge
unknown         : VIA Technologies|VT82C586 IDE [Apollo]
snd-via82xx     : VIA Technologies|VT8233 [AC97 Audio Controller]
via-rhine       : VIA Technologies|VT6102 [Rhine II 10/100]
Card:NVIDIA GeForce4 (generic): NVidia|0x326

I hope i included everything relevant.

Best wishes
Steven

"Can't access procfs/sysfs file", but all seems ok ??

[Mark Studebaker]

mount none -t sysfs /sys

Szakats Istvan wrote:
> LM Sensors Group:
> 
> I compiled and installed the the latest lm_sensors, enabled i2c in my
> kernel an compiled it but it doesn't work. I have i2c 2.8.8 and sysfs
> and procfs support compiled in my kernel. The only thing i see wrong i
> when i boot intro linux (Mandrake 9.1) the first thing i see are i2c
> error messages.
> Here's the code:
> 
> [szakats@nitro lm_sensors-2.8.8]$ sensors
> Can't access procfs/sysfs file
> Unable to find i2c bus information;
> For 2.6 kernels, make sure you have mounted sysfs and done
> 'modprobe i2c_sensor'!
> For older kernels, make sure you have done 'modprobe i2c-proc'!
> 
> 
> [root@nitro lm_sensors-2.8.8]# ls /proc/sys
> debug/  dev/  fs/  kernel/  net/  proc/  sunrpc/  vm/
> [root@nitro lm_sensors-2.8.8]# grep 'SYSFS' /usr/src/linux/.config
> CONFIG_SYSFS=y
> [root@nitro lm_sensors-2.8.8]# ls /sys
> ls: /sys: No such file or directory   (in the faq it says this
> directory should exist ???)
> 
> 
> [root@nitro lm_sensors-2.8.8]# i2cdetect -V
> i2cdetect version 2.8.8
> [root@nitro lm_sensors-2.8.8]# i2cdetect -l  (no output)
> [root@nitro lm_sensors-2.8.8]# modprobe i2c_sensor
> FATAL: Module i2c_sensor not found.       (it's compiled into the kernel)
> [root@nitro lm_sensors-2.8.8]# grep 'I2C' /usr/src/linux/.config
> # I2C support
> CONFIG_I2C=y
> CONFIG_I2C_CHARDEV=y
> # I2C Algorithms
> CONFIG_I2C_ALGOBIT=y
> CONFIG_I2C_ALGOPCF=m
> CONFIG_I2C_ALGOPCA=y
> # I2C Hardware Bus support
> CONFIG_I2C_ALI1535=m
> CONFIG_I2C_ALI1563=m
> CONFIG_I2C_ALI15X3=m
> CONFIG_I2C_AMD756=m
> CONFIG_I2C_AMD8111=m
> CONFIG_I2C_ELEKTOR=m
> CONFIG_I2C_I801=y
> CONFIG_I2C_I810=y
> CONFIG_I2C_ISA=y
> CONFIG_I2C_NFORCE2=y
> CONFIG_I2C_PARPORT=y
> CONFIG_I2C_PARPORT_LIGHT=y
> CONFIG_I2C_PIIX4=m
> CONFIG_I2C_PROSAVAGE=y
> CONFIG_I2C_SAVAGE4=y
> CONFIG_I2C_SIS5595=m
> CONFIG_I2C_SIS630=m
> CONFIG_I2C_SIS96X=m
> CONFIG_I2C_VIA=y
> CONFIG_I2C_VIAPRO=y
> CONFIG_I2C_VOODOO3=m
> CONFIG_I2C_PCA_ISA=y
> CONFIG_I2C_SENSOR=y
> # Other I2C Chip support
> # CONFIG_I2C_DEBUG_CORE is not set
> # CONFIG_I2C_DEBUG_ALGO is not set
> # CONFIG_I2C_DEBUG_BUS is not set
> # CONFIG_I2C_DEBUG_CHIP is not set
> # CONFIG_FB_RIVA_I2C is not set
> CONFIG_FB_RADEON_I2C=y
> [root@nitro lm_sensors-2.8.8]# grep 'SENSOR' /usr/src/linux/.config
> CONFIG_I2C_SENSOR=y
> CONFIG_SENSORS_ADM1021=y
> CONFIG_SENSORS_ADM1025=y
> CONFIG_SENSORS_ADM1031=y
> CONFIG_SENSORS_ASB100=y
> CONFIG_SENSORS_DS1621=y
> CONFIG_SENSORS_FSCHER=y
> CONFIG_SENSORS_GL518SM=y
> CONFIG_SENSORS_IT87=y
> CONFIG_SENSORS_LM75=y
> CONFIG_SENSORS_LM77=y
> CONFIG_SENSORS_LM78=y
> CONFIG_SENSORS_LM80=y
> CONFIG_SENSORS_LM83=y
> CONFIG_SENSORS_LM85=y
> CONFIG_SENSORS_LM90=y
> CONFIG_SENSORS_MAX1619=y
> CONFIG_SENSORS_SMSC47M1=y
> CONFIG_SENSORS_VIA686A=y
> CONFIG_SENSORS_W83781D=y
> CONFIG_SENSORS_W83L785TS=y
> CONFIG_SENSORS_W83627HF=y
> CONFIG_SENSORS_EEPROM=y
> CONFIG_SENSORS_PCF8574=y
> CONFIG_SENSORS_PCF8591=y
> CONFIG_SENSORS_RTC8564=y
> [root@nitro lm_sensors-2.8.8]# vi /boot/log/messages
> "Dec 26 13:43:46 nitro kernel: i2c /dev entries driver
> Dec 26 13:43:46 nitro kernel: i2c-parport: using default base 0x378
> Dec 26 13:43:46 nitro kernel: i2c-pca-isa: i/o base 0x000330. irq 10
> Dec 26 13:43:46 nitro kernel: i2c-algo-pca: bus is not idle. status is 0xff
> Dec 26 13:43:46 nitro last message repeated 11 times" (this is the
> first thing i see when booting)
> 
> 
> [root@nitro lm_sensors-2.8.8]# cat /proc/version
> Linux version 2.6.9-nitro4 (root@nitro) (gcc version 3.4.2) #1 Sat Dec
> 25 16:25:24 EET 2004
> [root@nitro lm_sensors-2.8.8]# lspcidrake
> unknown         : VIA Technologies Inc|VT8377 CPU to PCI Bridge
> unknown         : VIA Technologies Inc|PCI-to-PCI Bridge (AGP 2.0/3.0)
> saa7134         : Philips Semiconductors|SAA7134
> unknown         : VIA Technologies Inc|VT8233A PCI to ISA Bridge
> unknown         : VIA Technologies|VT82C586 IDE [Apollo]
> snd-via82xx     : VIA Technologies|VT8233 [AC97 Audio Controller]
> via-rhine       : VIA Technologies|VT6102 [Rhine II 10/100]
> Card:NVIDIA GeForce4 (generic): NVidia|0x326
> 
> I hope i included everything relevant.
> 
> Best wishes
> Steven
> 
> 

"Can't access procfs/sysfs file", but all seems ok ??

[Mark Studebaker]

We'll consider it but frankly the error message sensors prints out

	"For 2.6 kernels, make sure you have mounted sysfs"

seems to work for most people :)

Szakats Istvan wrote:
> On Sun, 26 Dec 2004 13:28:39 -0500, Mark Studebaker <mds4@verizon.net> wrote:
> 
>>mount none -t sysfs /sys
> 
> 
> Wow! thanks a lot for the quick reply and it solved the whole thing
> too. 10X!!! ;)
> Just one thing though: I failed to find this in the faq. Could you put
> this mount command where it deals with the error i've had?
> 
> Happy holidays!
> Steven
> 

"Can't access procfs/sysfs file", but all seems ok ??

[Jean Delvare]

Side notes:

> I compiled and installed the the latest lm_sensors, enabled i2c in my
> kernel an compiled it but it doesn't work. I have i2c 2.8.8 and sysfs
> and procfs support compiled in my kernel. The only thing i see wrong i
> when i boot intro linux (Mandrake 9.1) the first thing i see are i2c
> error messages.

You hopefully don't have i2c 2.8.8, since you are running a 2.6 kernel
and i2c 2.8.x is meant for 2.4 kernels.

> CONFIG_I2C_PARPORT=y
> CONFIG_I2C_PARPORT_LIGHT=y
> (...)
> CONFIG_I2C_PCA_ISA=y

Don't do that. I guess you do not need these drivers, and since the
devices they were written for can only hardly be detected, you are
asking for trouble by embedding them in the kernel.

> [root@nitro lm_sensors-2.8.8]# grep 'SENSOR' /usr/src/linux/.config
> CONFIG_I2C_SENSOR=y
> CONFIG_SENSORS_ADM1021=y
> CONFIG_SENSORS_ADM1025=y
> CONFIG_SENSORS_ADM1031=y
> CONFIG_SENSORS_ASB100=y
> CONFIG_SENSORS_DS1621=y
> CONFIG_SENSORS_FSCHER=y
> CONFIG_SENSORS_GL518SM=y
> CONFIG_SENSORS_IT87=y
> CONFIG_SENSORS_LM75=y
> CONFIG_SENSORS_LM77=y
> CONFIG_SENSORS_LM78=y
> CONFIG_SENSORS_LM80=y
> CONFIG_SENSORS_LM83=y
> CONFIG_SENSORS_LM85=y
> CONFIG_SENSORS_LM90=y
> CONFIG_SENSORS_MAX1619=y
> CONFIG_SENSORS_SMSC47M1=y
> CONFIG_SENSORS_VIA686A=y
> CONFIG_SENSORS_W83781D=y
> CONFIG_SENSORS_W83L785TS=y
> CONFIG_SENSORS_W83627HF=y
> CONFIG_SENSORS_EEPROM=y
> CONFIG_SENSORS_PCF8574=y
> CONFIG_SENSORS_PCF8591=y
> CONFIG_SENSORS_RTC8564=y

Same here. You certainly don't have all these, but the probings for i2c
devices are slow and not always reliable. Make these modules, don't
include them in the kernel. Removing all these drivers from the kernel
will significantly speed up boot.

> [root@nitro lm_sensors-2.8.8]# vi /boot/log/messages
> "Dec 26 13:43:46 nitro kernel: i2c /dev entries driver
> Dec 26 13:43:46 nitro kernel: i2c-parport: using default base 0x378
> Dec 26 13:43:46 nitro kernel: i2c-pca-isa: i/o base 0x000330. irq 10
> Dec 26 13:43:46 nitro kernel: i2c-algo-pca: bus is not idle. status is
> 0xff Dec 26 13:43:46 nitro last message repeated 11 times" (this is
> the first thing i see when booting)

These errors are because of CONFIG_I2C_PARPORT=y and
CONFIG_I2C_PCA_ISA=y above. Make them n or m and the errors will go
away.

-- 
Jean Delvare
http://khali.linux-fr.org/