[HTC Sensation] SebastianFM:
Probably, Bricked kernel renames /system/bin/mpdecision to /system/bin/mpdecision_backup during install and replaces /system/etc/init.qcom.post_boot.sh. You need to edit init.qcom.post_boot.sh and change these lines

#
#This is handled by the kernel, no need for the binary
#@ROMDEVS: disable this **** in your ramdisks too! :p
#
#case "$target" in
# "msm8660" | "msm8660_csfb" | "msm8960")
# start mpdecision
# ;;
#esac

#
#This is handled by the kernel, no need for the binary
#@ROMDEVS: disable this **** in your ramdisks too! :p
#
#case "$target" in
# "msm8660" | "msm8660_csfb")
# start thermald
# ;;
#esac

to

# Post-setup services
case "$target" in
"msm8660" | "msm8660_csfb" | "msm8960")
start mpdecision
;;
esac

case "$target" in
"msm8660" | "msm8660_csfb")
start thermald
;;
esac

Then restart your phone.

To check if mpdecision is running type from terminal getprop init.svc.mpdecision or from adb adb shell getprop init.svc.mpdecision. It should returns "running".

Also I recommend to use default HTC settings for msm8660 board:

case "$target" in
"msm8660" | "msm8660_csfb")
echo 1 > /sys/module/rpm_resources/enable_low_power/L2_cache
echo 1 > /sys/module/rpm_resources/enable_low_power/pxo
echo 2 > /sys/module/rpm_resources/enable_low_power/vdd_dig
echo 2 > /sys/module/rpm_resources/enable_low_power/vdd_mem
echo 1 > /sys/module/rpm_resources/enable_low_power/rpm_cpu
echo 1 > /sys/module/pm_8x60/modes/cpu0/power_collapse/suspend_enabled
echo 1 > /sys/module/pm_8x60/modes/cpu1/power_collapse/suspend_enabled
echo 1 > /sys/module/pm_8x60/modes/cpu0/standalone_power_collapse/suspend_enabled
echo 1 > /sys/module/pm_8x60/modes/cpu1/standalone_power_collapse/suspend_enabled
echo 1 > /sys/module/pm_8x60/modes/cpu0/power_collapse/idle_enabled
echo 1 > /sys/module/pm_8x60/modes/cpu1/power_collapse/idle_enabled
echo 1 > /sys/module/pm_8x60/modes/cpu0/standalone_power_collapse/idle_enabled
echo 1 > /sys/module/pm_8x60/modes/cpu1/standalone_power_collapse/idle_enabled
echo 1 > /sys/module/pm_8660/modes/cpu0/power_collapse/suspend_enabled
echo 1 > /sys/module/pm_8660/modes/cpu1/power_collapse/suspend_enabled
echo 1 > /sys/module/pm_8660/modes/cpu0/standalone_power_collapse/suspend_enabled
echo 1 > /sys/module/pm_8660/modes/cpu1/standalone_power_collapse/suspend_enabled
echo 1 > /sys/module/pm_8660/modes/cpu0/power_collapse/idle_enabled
echo 1 > /sys/module/pm_8660/modes/cpu1/power_collapse/idle_enabled
echo 1 > /sys/module/pm_8660/modes/cpu0/standalone_power_collapse/idle_enabled
echo 1 > /sys/module/pm_8660/modes/cpu1/standalone_power_collapse/idle_enabled
echo "ondemand" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo "ondemand" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo 50000 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_rate
echo 90 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
echo 1 > /sys/devices/system/cpu/cpufreq/ondemand/io_is_busy
echo 4 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_down_factor
echo 10 > /sys/devices/system/cpu/cpufreq/ondemand/down_differential
echo 384000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
echo 384000 > /sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq
chown system /sys/devices/system/cpu/cpufreq/ondemand/io_is_busy
chown system /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
chown system /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
chown system /sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq
chown system /sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq
chown root.system /sys/devices/system/cpu/mfreq
chmod 220 /sys/devices/system/cpu/mfreq
chown root.system /sys/devices/system/cpu/cpu1/online
chmod 664 /sys/devices/system/cpu/cpu1/online
chown system /sys/power/perflock
chown system /sys/power/cpufreq_ceiling
;;
esac