[gentoo-user] Problem after recompiling kernel

[Stephen Liu]

Hi folks,

Gentoo_amd64
gnome-light

After recompiling kernel to enable;
checked "Legacy Power Management API"
cheched "Video" on "ACPI (Advanced Configuration and Power Interface) Support"

following warning popup at booting;
.......
Sep 22 23:01:01 localhost device-mapper: dm-linear: Device lookup failed
Sep 22 23:01:01 localhost device-mapper: error adding target to table
Sep 22 23:01:01 localhost device-mapper: dm-linear: Device lookup failed
Sep 22 23:01:01 localhost device-mapper: error adding target to table
Sep 22 23:01:01 localhost device-mapper: dm-linear: Device lookup failed
Sep 22 23:01:01 localhost device-mapper: error adding target to table
Sep 22 23:01:01 localhost device-mapper: dm-linear: Device lookup failed
Sep 22 23:01:01 localhost device-mapper: error adding target to table
Sep 22 23:01:01 localhost device-mapper: dm-linear: Device lookup failed
Sep 22 23:01:01 localhost device-mapper: error adding target to table
Sep 22 23:01:01 localhost device-mapper: dm-linear: Device lookup failed
Sep 22 23:01:01 localhost device-mapper: error adding target to table
Sep 22 23:01:01 localhost device-mapper: dm-linear: Device lookup failed
.....
* end *

Please advise how to fix it.  TIA

B.R.
satimis