“intel_rapl: no valid rapl domains” message upon boot blacklist.conf -1

“intel_rapl: no valid rapl domains” message upon boot

I install fresh Ubuntu 14. 04 server under ESXI 5.1.0.
During my installation I did not get any erorrs or strange things. My problem is when I boot machine at console screen I get messages like

[ 6.958104] intel_rapl: no valid rapl domains found in package 0 
[ 7.508153] intel_rapl: no valid rapl domains found in package 0
[ 8.058695] intel_rapl: no valid rapl domains found in package 0
[ 8.609932] intel_rapl: no valid rapl domains found in package 0
[ 9.163260] intel_rapl: no valid rapl domains found in package 0

After that messages I am able to log in and my to me Ubuntu works OK. I have internet connection I am able to call apt-get update and I am able to login over SSH.

Should I investigate these errors deeply before I continue build my server.
Do I need to react on these Messages or it is ok to run Ubuntu like this.

The intel_rapl message was driving me crazy. The solution for me was to (sudo) edit/etc/modprobe.d/blacklist.conf and add blacklist intel_rapl. No more messages after reboot.

This was a change introduced in October 2013 to support Intel RAPL power capping driver in the Linux kernel. This message is non-obstructive, and when it appears it doesn't affect the performance or functionality of the system, since it's only a power management module.

If your virtualization software supports this driver (and the host supports advanced power features) then the message disappears.

You can check the source tree of the module to check what it does.

I know in virualbox you can enable PAE/NX which will solve "no valid rapl domains found in package" on Ubuntu 14.04 LTS. I don't know how about ESXI if it supports PAE/NX or not.

I install fresh Ubuntu 14. 04 server under ESXI 5.1.0.
During my installation I did not get any erorrs or strange things. My problem is when I boot machine at console screen I get messages like

[ 6.958104] intel_rapl: no valid rapl domains found in package 0  [ 7.508153] intel_rapl: no valid rapl domains found in package 0 [ 8.058695] intel_rapl: no valid rapl domains found in package 0 [ 8.609932] intel_rapl: no valid rapl domains found in package 0 [ 9.163260] intel_rapl: no valid rapl domains found in package 0

After that messages I am able to log in and my to me Ubuntu works OK. I have internet connection I am able to call apt-get update and I am able to login over SSH.

Should I investigate these errors deeply before I continue build my server.
Do I need to react on these Messages or it is ok to run Ubuntu like this.

 /etc/modprobe.d/blacklist.conf 

blacklist intel_rapl

blacklist the_module name

blacklist i2c_piix4

#
# Listing a module here prevents the hotplug scripts from loading it.
# Usually that'd be so that some other driver will bind it instead,
# no matter which driver happens to get probed first.  Sometimes user
# mode tools can also control driver binding.
#
# Syntax:  driver name alone (without any spaces) on a line. Other
# lines are ignored.
#

# watchdog drivers
blacklist i8xx_tco

# framebuffer drivers
blacklist aty128fb
blacklist atyfb
blacklist radeonfb
blacklist i810fb
blacklist cirrusfb
blacklist intelfb
blacklist kyrofb
blacklist i2c-matroxfb
blacklist hgafb
blacklist nvidiafb
blacklist rivafb
blacklist savagefb
blacklist sstfb
blacklist neofb
blacklist tridentfb
blacklist tdfxfb
blacklist virgefb
blacklist vga16fb

# ISDN - see bugs 154799, 159068
blacklist hisax
blacklist hisax_fcpcipnp

# sound drivers
blacklist snd-pcsp
blacklist nouveau    

本文出自 “vincent” 博客，谢绝转载！