Linux Mint: System is very slow! edit

It's caused by drm_kms_helper and I don't know what it is.

First, upgrade your system(apt-get update && apt-get upgrade && apt-get dist-upgrade) including kernel.

To disable it:

# echo N > /sys/module/drm_kms_helper/parameters/poll
# echo "options drm_kms_helper poll=N">/etc/modprobe.d/local.conf

To disable at start up, add below script to /etc/init.d/ and add using update-rc.d.

/etc/init.d/disable-krm_kms_helper.sh:

#/bin/bash
echo N> /sys/module/drm_kms_helper/parameters/poll

# update-rc.d -f disable-krm_kms_helper.sh defaults

After awhile, somehow the lags are gone away.

References

https://bugs.launchpad.net/linuxmint/+bug/1122219