• Laptops
• Apple_MacBookPro9,2

Apple MacBook Pro 13-Inch "Core i5" 2.5 / "Core i7 2.9" (Mid-2012)

• Identifiers: Mid-2012 - MD101LL/A* (i5) - MD102LL/A (i7) - MacBookPro9,2 - A1278/2554*

1. Hardware

2. Support overview

Legend

OK

Somewhat OK: requires additional tweaking or works worse than expected

Present but status unknown or untested

Does not work

nothing Not sure if present

3. Tweaks on FreeBSD 12.x-RELEASE

3.1. Battery

• Internal battery is detected out of the box.

  Maximum efficiency while on battery is done with powerd(8) and the following settings on /etc/rc.conf:

   # Enable powerd(8) at boot
   powerd_enable="YES"
  
   # powerd(8) flags
   power_flags="-n min -a hiadaptive -b adaptive"

3.2. Fan control

• Fan control needs the asmc(4) and coretemp(8) drivers. Once drivers are loaded with kldload asmc && kldoad coretemp, control of the fan is done with sysctl(8). For example, the following would set the fan speed running at 3200 RPM:

   sysctl dev.asmc.0.fan.0.minspeed=3200

• A quick and dirty shell script to control the fan based on the current temperature of the cpu: asmcfan

• Make a cronjob running every minute on /etc/crontab (or root's crontab by making the proper change on the cron entry below):

   # Setting fan speed based on current temperature
   *      *       *       *       *       root    /opt/local/bin/asmcfan

3.3. Sound

• Kernel driver for the Cirrus Logic CS4206: snd_hda(4)

• List of pcm devices:

   % cat /dev/sndstat
   FreeBSD Audio Driver (64bit 2009061500/amd64)
   Installed devices:
   pcm0: <Cirrus Logic CS4206 (Internal Analog 3.1/2.0)> on hdaa0  (1p:4v/1r:4v) default
   pcm1: <Cirrus Logic CS4206 (Analog Headphones)> on hdaa0  (1p:1v/0r:0v)
   pcm2: <Cirrus Logic CS4206 (Digital)> on hdaa0  (1p:1v/0r:0v)
   No devices installed from userspace.

• By default, sound is tiny (it does sound muffled). These laptops has 2 internal speakers (the right is tied to a tiny sub-woofer) so the default pin assignment should be corrected by inverting sequence of internal speakers pins that are in the same association to correctly power up the sub-woofer. From snd_hda(4) sequences are explained:

   For multichannel input/output associations sequence
   numbers encode channel pairs positions: 0 - Front, 1 -
   Center/LFE, 2 - Back, 3 - Front Wide Center, 4 - Side.
   Standard combinations are: (0) - Stereo; (0, 2), (0,
   4) - Quadro; (0, 1, 2), (0, 1, 4) - 5.1; (0, 1, 2, 4)
   - 7.1.

  • To correct this pins need to be adjusted at boot time. Put this on /boot/device.hints:

      hint.hdaa.0.nid10.config="seq=0"
      hint.hdaa.0.nid11.config="seq=1"

  • Reference: https://forums.FreeBSD.org/threads/how-to-solve-tiny-sound-on-a-macbook-pro-9-2-mid-2012.80741/

• The sound may be too low out of the box. Raise up the relative level with:

   sysctl hw.snd.vpc_0db=1

• The auto-sense of the headphone jack port while being correctly detected does not work when in the same association as the speakers and use the correct seq=15. Use a graphical mixer (ie. audio/gtk-mixer) or sysctl hw.snd.default_unit=1 to switch to the headphones as a workaround.

• Equalizers in mixer applications are possible via the following device configuration on /boot/loader.conf:

   # Enable equalizer in mixer applications for internal speakers (pcm0)
   hint.pcm.0.eq=1
  
   # Enable equalizer in mixer applications for analog headphones (pcm1)
   hint.pcm.1.eq=1
  
   # Enable equalizer in mixer applications for digital line (pcm2)
   hint.pcm.2.eq=1

3.4. Suspend/Resume

• Suspend and resume is working after setting the following in /etc/sysctl.conf.

  • To suspend when closing the lid:

      hw.acpi.lid_switch_state=S3

  • To suspend when using the power button:

      hw.acpi.power_button_state=S3

3.5. Trackpad

1. The atp(4) driver is old making the trackpad fuzzy. Use the more recent kernel driver wsp(4).

2. Put the following on /etc/sysctl.conf:

    hw.usb.wsp.enable_single_tap_clicks: 0
    hw.usb.wsp.scr_hor_threshold: 20
    hw.usb.wsp.pressure_tap_threshold: 120
    hw.usb.wsp.pressure_untouch_threshold: 10
    hw.usb.wsp.pressure_touch_threshold: 50
    hw.usb.wsp.z_factor: 5
    hw.usb.wsp.scale_factor: 12
    hw.usb.wsp.debug: 1

3. To make the trackpad working in Xorg, add this to /etc/sysctl.conf:

    kern.evdev.rcpt_mask=3

4. Files

• /var/run/dmesg.boot

• acpidump -dt

• devinfo -v

• pciconf -lv

• asmcfan shell script

• Xorg.conf auto-detection

CategoryLaptop CategoryApple CategoryMobile