LinuxACPI: I/O resource it87 [0x295-0x296] conflicts with ACPI region IP__ [0x295-0x296] Error and Solution

Posted on in Categories last updated August 13, 2012

I‘m getting the following error in /var/log/messages file and my sensors command is also not working:


Aug 13 21:22:24 backup kernel: [ 8.681901] ACPI: I/O resource it87 [0x295-0x296] conflicts with ACPI region IP__ [0x295-0x296]
Aug 13 21:22:24 backup kernel: [ 8.683378] it87 it87.656: Detected broken BIOS defaults, disabling PWM interface

How do I fix this problem under Debian or Ubuntu Linux desktop system?

You can fix this problem by editing /etc/default/grub file as follows:
# vi /etc/default/grub
Update GRUB_CMDLINE_LINUX as follows:

GRUB_CMDLINE_LINUX="acpi_enforce_resources=lax"

Save and close the file. Update /boot/grub/grub.cfg by running the following command:
# update-grub
Reboot the system:
# reboot

Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter, Facebook, Google+.

Share this on:

Leave a Comment

Tagged as: Tags , , , , , , , , ,