[Lucid] kernel 2.6.32-22 module i2c-core missing

[ingo]

When trying to further dig into bug #575296 (no module for 2nd i2c-bus on ASUS nForce boards), I had to realize that in Lucid's kernel the module

i2c-core

is missing. So I cannot force to load module i2c-nforce2 at address 0x1c40 (like Hardy does automatically). This results in following error message on boot-up Lucid:

ACPI: resource nForce2_smbus [0x1c40-0x1c7f] conflicts with ACPI region SM00 [0x1c40-0x1c45]
ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

While Hardy correctly assignes the i2c-nforce2 to both i2c-busses:

i2c-adapter i2c-0: nForce2 SMBus adapter at 0x1c00
i2c-adapter i2c-1: nForce2 SMBus adapter at 0x1c40

In Hardy module i2c-nforce2 depends on i2c-core, not so in Lucid. Lucid only provides i2c-core for the EC2-kernel:

apt-file search i2c-core
 linux-image-2.6.32-305-ec2: /lib/modules/2.6.32-305-ec2/kernel/drivers/i2c/i2c-core.ko
 linux-image-2.6.32-306-ec2: /lib/modules/2.6.32-306-ec2/kernel/drivers/i2c/i2c-core.ko

As a result I cannot pass any arguments to i2c-core to bind to a certain I/O.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ingo 1675 F.... pulseaudio
 /dev/snd/controlC1: ingo 1675 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'NVidia'/'HDA NVidia at 0xfe024000 irq 21'
   Mixer name : 'Analog Devices AD1988B'
   Components : 'HDA:11d4198b,104381f6,00100200'
   Controls : 48
   Simple ctrls : 26
Card1.Amixer.info:
 Card hw:1 'U0x46d0x9a4'/'USB Device 0x46d:0x9a4 at usb-0000:00:02.1-9, high speed'
   Mixer name : 'USB Mixer'
   Components : 'USB046d:09a4'
   Controls : 2
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'Mic',0
   Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
   Capture channels: Mono
   Limits: Capture 0 - 14
   Mono: Capture 0 [0%] [23.75dB] [on]
DistroRelease: Ubuntu 10.04
HibernationDevice: #RESUME=UUID=ceab86c8-3e16-4896-b9fc-dcf21d30a7ce
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
MachineType: System manufacturer System Product Name
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcCmdLine: root=/dev/sda9 ro splash
ProcEnviron:
 LANG=de_DE.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2
Regression: Yes
RelatedPackageVersions: linux-firmware 1.34
Reproducible: Yes
RfKill:

Tags: lucid kconfig regression-release needs-upstream-testing
Uname: Linux 2.6.32-22-generic x86_64
UserGroups: adm cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 09/25/2006
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: ASUS M2N-E ACPI BIOS Revision 0402
dmi.board.name: M2N-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: 1.XX
dmi.chassis.asset.tag: 123456789000
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSM2N-EACPIBIOSRevision0402:bd09/25/2006:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM2N-E:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Jeremy Foshee (jeremyfoshee)]

Hi ingo,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/releases/ . If the issue remains, please run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 597743

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[ingo (ingo-steiner)]

here the upstream test - Debian-Squeeze does contain module i2c-core with same kernel 2.6.32:

ingo@squeeze:~$ locate i2c-core
/lib/modules/2.6.32-5-amd64/kernel/drivers/i2c/i2c-core.ko
ingo@squeeze:~$ uname -a
Linux squeeze 2.6.32-5-amd64 #1 SMP Tue Jun 1 04:34:03 UTC 2010 x86_64 GNU/Linux
ingo@squeeze:~$

and it loads the module as well:

lsmod | grep i2c_core
i2c_core 15712 2 drm,i2c_nforce2

Conclusion: it is Ubuntu-specific

[ingo (ingo-steiner)]

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[ingo (ingo-steiner)]

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[ingo (ingo-steiner)]

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[ingo (ingo-steiner)]

The apport information has been collected with Lucid (to which this bug has been assigned to).
Lucid is considered already a release and will suvive Maverick by far with regard to updates and fixes.

[ingo (ingo-steiner)]

If you need mor or different logs, please let me know

[ingo (ingo-steiner)]

I do not understand why such detailled information and logs are required, as everybody having Lucid can easily confirm that module i2c-core is neither available as module, nor compiled into the kernel (there even is no option about it in the kernel configuration as supplied with Lucid):

ingo@pp:/boot$ cat config-2.6.32-22-generic | grep -i i2c
CONFIG_MOUSE_SYNAPTICS_I2C=m
CONFIG_TOUCHSCREEN_AD7879_I2C=m
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=m
# CONFIG_I2C_HELPER_AUTO is not set
# I2C Algorithms
CONFIG_I2C_ALGOBIT=m
CONFIG_I2C_ALGOPCF=m
CONFIG_I2C_ALGOPCA=m
# I2C Hardware Bus support
CONFIG_I2C_ALI1535=m
CONFIG_I2C_ALI1563=m
CONFIG_I2C_ALI15X3=m
CONFIG_I2C_AMD756=m
CONFIG_I2C_AMD756_S4882=m
CONFIG_I2C_AMD8111=m
CONFIG_I2C_I801=m
CONFIG_I2C_ISCH=m
CONFIG_I2C_PIIX4=m
CONFIG_I2C_NFORCE2=m
CONFIG_I2C_NFORCE2_S4985=m
CONFIG_I2C_SIS5595=m
CONFIG_I2C_SIS630=m
CONFIG_I2C_SIS96X=m
CONFIG_I2C_VIA=m
CONFIG_I2C_VIAPRO=m
CONFIG_I2C_SCMI=m
# I2C system bus drivers (mostly embedded / system-on-chip)
CONFIG_I2C_GPIO=m
CONFIG_I2C_OCORES=m
CONFIG_I2C_SIMTEC=m
# External I2C/SMBus adapter drivers
CONFIG_I2C_PARPORT=m
CONFIG_I2C_PARPORT_LIGHT=m
CONFIG_I2C_TAOS_EVM=m
CONFIG_I2C_TINY_USB=m
# Graphics adapter I2C/DDC channel drivers
CONFIG_I2C_VOODOO3=m
# Other I2C/SMBus bus drivers
CONFIG_I2C_PCA_PLATFORM=m
CONFIG_I2C_STUB=m
# Miscellaneous 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
# I2C GPIO expanders:
CONFIG_MFD_WM8350_I2C=m
CONFIG_VIDEO_IR_I2C=m
CONFIG_I2C_SI4713=m
CONFIG_I2C_SI470X=m
CONFIG_FB_NVIDIA_I2C=y
CONFIG_FB_RIVA_I2C=y
CONFIG_FB_MATROX_I2C=m
CONFIG_FB_RADEON_I2C=y
CONFIG_FB_SAVAGE_I2C=y
CONFIG_FB_3DFX_I2C=y
CONFIG_SND_SOC_I2C_AND_SPI=m
# I2C RTC drivers
# I2C encoder or helper chips
CONFIG_DRM_I2C_CH7006=m
CONFIG_LIRC_I2C=m

Moreover checking the kernel-parameters.txt does not offer the needed options to configure it.

[Andy Whitcroft (apw)]

It appears that the module was built-in in lucid. You should still be able to change the module parameters from the kernel command line <modulename>.<parameter>=<value> should allow you to change the io parameters in a similar manner to doing so in the modprobe configuration. Could you try that and let me know here in the bug.

[ingo (ingo-steiner)]

Hi Andy,

yozu are right, i2c-core is compiled into the kernel in lucid. I did search for available options to attach with i2c-nforce2 to the 3 SMBusses in my nVidia nForce 570-Ultra = MCP55:

lspci -v |grep -A8 SMB
00:01.1 SMBus: nVidia Corporation MCP55 SMBus (rev a2)
 Subsystem: ASUSTeK Computer Inc. Unknown device 8239
 Flags: 66MHz, fast devsel, IRQ 10
 I/O ports at fc00 [size=64]
 I/O ports at 1c00 [size=64]
 I/O ports at 1c40 [size=64]
 Capabilities: [44] Power Management version 2

By default only second bus (0x1c00) ist used by i2c-nforce2. Meanwhile I succeeded to attach also to 3rd bus (1c40) with kernel parameter "acpi_enforce_resources=lax". But I am unable to attach to 1st one at 0xfc00.

So I installed Debian-Squeeze with similar kernel to obtain "modinfo":

# modinfo i2c-core
filename: /lib/modules/2.6.32-5-amd64/kernel/drivers/i2c/i2c-core.ko
license: GPL
description: I2C-Bus main module
author: Simon G. Vogl <email address hidden>
depends:
vermagic: 2.6.32-5-amd64 SMP mod_unload modversions

and sadly there is no parameter listed with which I could force it to bind to a certain I/O.

So conclusion is: my posting is obsolete because there are no options available for i2c-core and thus it does not matter whether it is built into the kernel (just not the usual way).

I cannot check if any option is passed on if I append it to the kernel line in menu.lst.

My only question possibly remaining: how to attach with i2c-nforce2 to SMBus #1?

cat /proc/ioports just tells me that there is no module assigned to it:

1c00-1c3f : 0000:00:01.1
  1c00-1c3f : nForce2_smbus
1c40-1c7f : 0000:00:01.1
  1c40-1c7f : nForce2_smbus
.......
fc00-fc3f : 0000:00:01.1

[Po-Hsu Lin (cypressyew)]

Closing this bug with Won't fix as Lucid is no longer supported.
Please feel free to open a new bug report if you're still experiencing this on a newer release (Bionic 18.04.3 / Disco 19.04)
Thanks!