vuxu.org: Juno

Juno is an Lenovo X220i, Type 4290W1A with an i3-2310M (2.1GHz, 2 cores, hyperthreading, VT-x) 8GB RAM, 80GB SSD (SSDMAEMC08) and a 320GB harddisk500GB SSD (Samsung SSD 850 EVO).

The naming

Juno was an ancient Roman goddess, the protector and special counselor of the state.

Rough setup

• Flash BIOS version 1.19. Get it here.

  • Format an empty USB stick with a FAT32 partition and grub4dos
  • Put the ISO file there, too.

  • Boot it, enter grub4dos and then, on the command line:

    root (hd0,0)
    map /8duj09uc.iso (0xff)
    map --hook
    root (0xff)
    chainloader (0xff)
    boot
    

  • Select menu item 2.

• Enter BIOS by pressing ThinkVantage, then F1: enable “Fn and Ctrl Key swap”, disable “Keyboard beep”, enable “Virtualization technology”.

• Boot archlinux-2011.08.19.

• Since I wanted full disk encryption, shred the harddisk (here sda) with random data:

     shred -n1 -v /dev/sda
  

  We do not shred the SSD (sdb) because that would break the wear-leveling.

• Partition scheme: I partitioned manually with fdisk, which automatically 2k-aligned the partitions.

     sdb1 128mb /boot ext2
     sdb2 rest dm-crypt named cryptssd, -c aes-xts-plain -y -s 512 --align-payload=8192
       lvm volume group "ssd"
         8g swap ssd-swap swap label swap
         20g / ssd-root ext4 label root
         rest /home ssd-home ext4 label home 
  
  
     sda1 128mb /altboot ext2
     sda2 rest dm_crypt named crypthdd, -c aes-xts-plain -y -s 512 --align-payload=8192
       lvm volume group "hdd"
         280g /data hdd-data ext4 label home
         rest free
  

  (The purpose of /altboot is to be able to quickly get a bootable system should the SSD ever break.)

Base configuration

• grub.conf:

     kernel /vmlinuz-linux root=/dev/mapper/ssd-root resume=/dev/mapper/ssd-swap cryptdevice=/dev/sdb2:ssd printk.time=1 ro loglevel=6
  

• Install suspend on lid shut, in /etc/acpi/handler.sh:

  button/lid)
      logger "ACPI lid switched $1 $2"
      if [ -n "`grep close /proc/acpi/button/lid/LID/state`" ]; then
          /usr/sbin/pm-suspend
          logger -s "ACPI lid closed";
      elif [ -n "`grep open /proc/acpi/button/lid/LID/state`" ]; then
          logger -s "ACPI lid opened"
      else
          logger -s "Couldn't detect Lid state"
      fi
  

• Make ondemand default scheduler in /etc/conf.d/cpufreq.

• Extend logrotate keep times.

• In /etc/pacman.conf, make tar.gz packages instead of tar.xz. (I will directly install them mostly, the compression is a waste of time.)

• Copy old passwd/group/shadow/gshadow.

• Copy netcfg data and WPA certificates. Set up net-auto-* stuff in rc.conf.

• Setup hooks in /etc/pm/sleep.d:

  #### /etc/pm/sleep.d/10mpd 
  !/bin/sh
  
  
  case $1 in
  hibernate)
      mpc pause
      ;;
  suspend)
      mpc pause
      ;;
  thaw)
      ;;
  resume)
      ;;
  *)  
      ;;
  esac
  
  
  #### /etc/pm/sleep.d/50net-auto-wireless 
  #!/bin/sh
  
  
  case $1 in
  hibernate)
      ;;
  suspend)
      ;;
  thaw)
      /etc/rc.d/net-auto-wireless restart
      ;;
  resume)
      /etc/rc.d/net-auto-wireless restart
      ;;
  *)  
      ;;
  esac
  

• Copy postfix, dovecot, ntp configs from zorya.

• Copy /var/lib/dovecot from zorya.

• adduser, groups: adm,wheel,log,games,audio,video,power,scanner,plugdev

• For two-finger scrolling, add to your .xinitrc:

  synclient EmulateTwoFingerMinW=20
  synclient EmulateTwoFingerMinZ=7
  

• /etc/fstab: Add relatime to /, /home.

• Add coretemp, acpi_cpufreq, pcrypt to MODULES.

• Install laptop-mode-tools, pm-utils.

• Install tp_smapi, hdapsd.

• Install thinkfan, get a config from here, you need to enable fan control in /etc/modprobe.d/thinkpad.conf:

  options thinkpad_acpi fan_control=1
  

• Install lots of stuff with packer --noconfirm. Bitch for broken PKGBUILDs.

Hacks

• Thinkfinger doesn’t support the fingerprint reader, but libfprint-unstable with fingerprint-gui works, see the Arch wiki.

• Mute microphone: works with xbindkeys:

  "amixer sset Capture toggle"
    m:0x0 + c:248
  

• Suspend is broken by default because of iwlagn. Create a file /etc/pm/config.d/iwlagn with contents to unload it automatically:

  SUSPEND_MODULES="iwlagn"
  

• To save more than 8W of power, configure laptop-mode tools and enable RC6:

  i915.i915_enable_rc6=1
  

  Some relevant laptop-mode settings:

  CONTROL_AC97_POWER="auto"
  ENABLE_AUTO_HIBERNATION=0
  ENABLE_BATTERY_LEVEL_POLLING=0
  CONTROL_BLUETOOTH=1
  BATT_ENABLE_BLUETOOTH=0
  CONTROL_CPU_FREQUENCY=0  # done with cpufreq
  CONTROL_DPMS_STANDBY=0
  CONTROL_ETHERNET=0  # dont fuck with my gigabit
  CONTROL_INTEL_HDA_POWER="auto"
  CONTROL_NMI_WATCHDOG="auto"
  CONTROL_RUNTIME_PM="auto"
  CONTROL_SCHED_MC_POWER_SAVINGS="auto"
  CONTROL_SCHED_SMT_POWER_SAVINGS="auto"
  CONTROL_USB_AUTOSUSPEND="auto"
  

Switching to Void Linux

I got a new SSD (Samsung SSD 850 EVO 500GB, €220.11 from hoh.de) to replace the HDD.

For copying, a USB-SATA adapter was used:

Bus 002 Device 003: ID 152d:2509 JMicron Technology Corp. / JMicron USA Technology Corp. JMS539 SuperSpeed SATA II 3.0G Bridge

Again, there is a boot partition (2G to fit a GRML iso and enough Void kernels).

/dev/sdc1  *       2048   4196351   4194304     2G 83 Linux
/dev/sdc2       4196352 976773167 972576816 463.8G 83 Linux

Installation is straight forward:

mkfs.ext2 -L vroot /dev/sdc1
cryptsetup luksFormat /dev/sdc2 -c aes-xts-plain64 -y -s 512 --align-payload=8192
cryptsetup luksOpen /dev/sdc2 vcrypt-pool
vgcreate evo /dev/mapper/vcrypt-pool
lvcreate -n vroot -L 30G evo
lvcreate -n vdata -L 400G evo
mkfs.ext4 -L vroot /dev/mapper/evo-vroot
mkfs.ext4 -L vdata -m0 /dev/mapper/evo-vdata

Install Void on LVM/LUKS.

ChangeLog

• 15nov2011: Update to BIOS 1.24, using the same instructions as above.

• 08feb2015: Switch to Void Linux/new SSD.

• 12mar2015: Replaced the battery (Original Lenovo ThinkPad Battery 44+ for €46.90 at Jacob Elektronik). Previous one was down to 48% of its capactiy (lasted ~2h).