The document is not complete. Please include necessary bits from Bug #256036#c6 and Bug #256036#c7. BTW, I have no modifications to /etc/security/limits.conf nor /etc/limits.conf and am getting core dumps. Wonder how I enabled them. # grep limit /etc/profile*race # grep ulimit ~/.bash_profile # # gzip -dc /proc/config.gz | grep CORE CONFIG_ELF_CORE=y CONFIG_MCORE2=y CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y # CONFIG_TIFM_CORE is not set CONFIG_SERIAL_CORE=y CONFIG_SERIAL_CORE_CONSOLE=y # CONFIG_I2C_OCORES is not set # CONFIG_I2C_DEBUG_CORE is not set CONFIG_SENSORS_CORETEMP=m # CONFIG_MFD_CORE is not set # CONFIG_TWL4030_CORE is not set # CONFIG_DVB_CORE is not set CONFIG_PROC_KCORE=y CONFIG_PROC_VMCORE=y #