Hello, I have a P4S8X motherboard from Asustek. My system is Mandrake 9.1 with the latest 2.4.21 kernel from Mandrake Update. I have just install the latest i2c and lm_sensors from CVS but I am not able to make them work (Your web site announce that these combination - 648/961 - should be supported with the CVS version). I am not a developper so I can't help you much but here is the results of the different commands. I hope it can help you improve your code. Thanks. ******************************************************************* result of sensors-detect ******************************************************************* [root at PC SOURCES]# sensors-detect This program will help you to determine which I2C/SMBus modules you need to load to use lm_sensors most effectively. You need to have done a `make install', issued a `depmod -a' and made sure `/etc/conf.modules' (or `/etc/modules.conf') contains the appropriate module path before you can use some functions of this utility. Read doc/modules for more information. Also, you need to be `root', or at least have access to the /dev/i2c[-/]* files for some things. You can use prog/mkdev/mkdev.sh to create these /dev files if you do not have them already. If you have patched your kernel and have some drivers built-in you can safely answer NO if asked to load some modules. In this case, things may seem a bit confusing, but they will still work. BIOS vendor (ACPI): ASUS System vendor (DMI): System Manufacturer BIOS version (DMI): ASUS P4S8X ACPI BIOS Revision 1004 We can start with probing for (PCI) I2C or SMBus adapters. You do not need any special privileges for this. Do you want to probe now? (YES/no): Probing for PCI bus adapters... Use driver `i2c-sis645' for device 00:00.0: Silicon Integrated Systems SIS648 Probe succesfully concluded. We will now try to load each adapter module in turn. Module `i2c-sis645' already loaded. Do you now want to be prompted for non-detectable adapters? (yes/NO): yes Load `i2c-elektor' (say NO if built into your kernel)? (YES/no): modprobe: Can't locate module i2c-elektor Loading failed... skipping. Load `i2c-elv' (say NO if built into your kernel)? (YES/no): /lib/modules/2.4.21-0.18mdkcustom/kernel/drivers/i2c/i2c-elv.o: init_module: No such device Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters. You may find more information in syslog or the output from dmesg modprobe: insmod /lib/modules/2.4.21-0.18mdkcustom/kernel/drivers/i2c/i2c-elv.o failed modprobe: insmod i2c-elv failed Loading failed... skipping. Load `i2c-philips-par' (say NO if built into your kernel)? (YES/no): Module loaded succesfully. Load `i2c-velleman' (say NO if built into your kernel)? (YES/no): /lib/modules/2.4.21-0.18mdkcustom/kernel/drivers/i2c/i2c-velleman.o: init_module: No such device Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters. You may find more information in syslog or the output from dmesg modprobe: insmod /lib/modules/2.4.21-0.18mdkcustom/kernel/drivers/i2c/i2c-velleman.o failed modprobe: insmod i2c-velleman failed Loading failed... skipping. To continue, we need module `i2c-dev' to be loaded. If it is built-in into your kernel, you can safely skip this. i2c-dev is already loaded. We are now going to do the adapter probings. Some adapters may hang halfway through; we can't really help that. Also, some chips will be double detected; we choose the one with the highest confidence value in that case. If you found that the adapter hung after probing a certain address, you can specify that address to remain unprobed. That often includes address 0x69 (clock chip). Segmentation fault ******************************************************************* Information supplied by dmesg ******************************************************************* i2c-elv.o: i2c ELV parallel port adapter module version 2.8.0-CVS (2003xxxx) i2c-velleman.o: i2c Velleman K8000 adapter module version 2.8.0-CVS (2003xxxx) Unable to handle kernel paging request at virtual address 00040031 printing eip: e255baa5 *pde = 00000000 Oops: 0000 sg snd-pcm-oss snd-mixer-oss ppdev i2c-dev i2c-philips-par i2c-algo-bit i2c-sis645 ohci1394 ieee1394 snd-intel8x0 snd-pcm snd-timer snd-mpu401-uart snd-rawmidi snd-seq-device snd-ac97-codec snd-page-alloc snd ehci-hcd emu10k1-gp gameport i2c-core udf sr_mod floppy binfmt_misc lp nvidia parport_pc parport ipt_TOS ipt_MASQUERADE ipt_LOG ipt_REJECT ipt_state iptable_mangle ip_nat_irc ip_nat_ftp iptable_nat ip_conntrack_irc ip_conntrack_ftp ip_conntrack iptable_filter ip_tables audigy ac97_codec sound soundcore ppp_async ppp_generic slhc sis900 af_packet nls_iso8859-15 acm ntfs supermount ide-cd cdrom ide-scsi scsi_mod usbmouse keybdev mousedev adiusbadsl scanner hid input usb-ohci usbcore rtc ext3 jbd CPU: 0 EIP: 0010:[<e255baa5>] Tainted: PF EFLAGS: 00210206 EIP is at read_bus_i2c+0x55/0xc0 [i2c-core] eax: 00040009 ebx: 00000006 ecx: fffffffb edx: e255e29e esi: 00000000 edi: d71c2000 ebp: 00000c00 esp: d1891f44 ds: 0018 es: 0018 ss: 0018 Process sensors-detect (pid: 16192, stackpage=d1891000) Stack: d1891f94 c013515d c0340e6c d3e35f00 00000c00 d71c2000 d1891f98 c0163e63 d71c2000 d1891f88 00000000 00000c00 d1891f84 00000000 d6dfe620 00000000 00000000 00000000 0826b7d0 d3e35ee0 00001000 d1891fbc c01438c4 d3e35ee0 Call Trace: [<c013515d>] do_brk+0xfd/0x1e0 [kernel] [<c0163e63>] proc_file_read+0xa3/0x1c0 [kernel] [<c01438c4>] sys_read+0x84/0x100 [kernel] [<c0109093>] system_call+0x33/0x40 [kernel] Code: 8b 50 28 85 d2 74 46 8b 40 24 85 c0 74 36 50 50 68 9f e2 55 ******************************************************************* Result of lspci ******************************************************************* 00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device 0648 (rev 02) 00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SiS 530 Virtual PCI-to-PCI bridge (AGP) 00:02.0 ISA bridge: Silicon Integrated Systems [SiS]: Unknown device 0963 (rev 04) 00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016 00:02.3 FireWire (IEEE 1394): Silicon Integrated Systems [SiS] FireWire Controller 00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] 00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS7012 PCI Audio Accelerator (rev a0) 00:03.0 USB Controller: Silicon Integrated Systems [SiS] SiS7001 USB Controller (rev 0f) 00:03.1 USB Controller: Silicon Integrated Systems [SiS] SiS7001 USB Controller (rev 0f) 00:03.2 USB Controller: Silicon Integrated Systems [SiS] SiS7001 USB Controller (rev 0f) 00:03.3 USB Controller: Silicon Integrated Systems [SiS] SiS7002 USB 2.0 00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 10/100 Ethernet (rev 91) 00:0c.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 0a) 00:0c.1 Input device controller: Creative Labs SB Live! MIDI/Game Port (rev 0a) 00:0e.0 RAID bus controller: Promise Technology, Inc. PDC20376 (rev 02) 01:00.0 VGA compatible controller: nVidia Corporation NV28 [GeForce4 Ti 4200 AGP 8x] (rev a1)