Linux on Lenovo X230 field notes

gistfile1.txt

/etc/rc.local
# reduce swapping to a minimum
echo 0 > /proc/sys/vm/swappiness

/etc/fstab
   use "noatime,nodiratime,discard" mount options for SSD 
   use tmpfs for tmp and friends:

tmpfs   /tmp       tmpfs   defaults,noatime,mode=1777   0  0
tmpfs   /var/spool tmpfs   defaults,noatime,mode=1777   0  0
tmpfs   /var/tmp   tmpfs   defaults,noatime,mode=1777   0  0
tmpfs   /var/log   tmpfs   defaults,noatime,mode=0755   0  0


/etc/default/grub

    # fine grained brightness control,
    # deadline IO scheduler for better SSD performance
    GRUB_CMDLINE_LINUX_DEFAULT="quiet acpi_backlight=vendor elevator=deadline"



Enable ultranav scrolling (hold middle button and move the trackpoint):

/usr/share/X11/xorg.conf.d/20-thinkpad-trackpoint.conf

    Section "InputClass"
       Identifier  "ThinkPad TrackPoint"
       MatchProduct    "TPPS/2 IBM TrackPoint"
       MatchDevicePath "/dev/input/event*"
       Option      "EmulateWheel"      "true"
       Option      "EmulateWheelButton"    "2" 
       Option      "XAxisMapping"      "6 7"
       Option      "YAxisMapping"      "5 4"
    EndSection