Hi, When I do `depmod -a` after i2c and lm_sensors are installed, I got error like this: Unresolved symbols in /lib/modules/2.4.21-40.EL.rftsmp/kernel/drivers/i2c/busses/i2c-ipmi.o Then I run `depmod -a -e` to find detail information: # depmod -a -e depmod: *** Unresolved symbols in /lib/modules/2.4.21-40.EL.rftsmp/kernel/drivers/i2c/busses/i2c-ipmi.o depmod: ipmi_smi_watcher_unregister_Rsmp_87e068b3 depmod: ipmi_request_Rsmp_5ed81731 depmod: ipmi_get_version_Rsmp_8bb4af12 depmod: ipmi_create_user_Rsmp_e10206b5 depmod: ipmi_smi_watcher_register_Rsmp_18f0b1ff depmod: ipmi_destroy_user_Rsmp_74848fb7 I use i2c-2.10.0 and lm_sensors-2.10.0 tarball to build on Red Hat Enterprise Linux AS release 3(kernel version: 2.4.21-27). In order to run it on Red Hat Enterprise Linux AS release 3(kernel version: 2.4.21-40), I set parameter `LINUX` of Makefile to 2.4.21-40 source directory. Attached please find the diff files of i2c and lm_sensors' spec files for fit my environment. The RFT_KERNEL in these two spec files are refer to the 2.4.21-40 source. Could you please help with the problem? Thank you. Br, Hubert