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*

• Year introduced: June 11, 2012
• CPU: Intel(R) Core(TM) i5-3210M @ 2.50Ghz / i7-3520M CPU @ 2.90Ghz (Ivy Bridge)
• Ethernet: Broadcom NetXtreme BCM57765 Gigabit Ethernet PCIe
• Graphics: Intel(R) HD Graphics 4000 (integrated GPU with 1.5GB shared memory)
• Memory: 4GB (or 8GB for the i7) RAM DDR3 @ 1600Mhz
• Screen: LED-backlit 13,3“ widescreen TFT active-matrix “glossy” @ 1280×800
• Wireless: Broadcom BCM4331 802.11a/b/g/n Dual-Band Wireless
• Sound: Cirrus Logic CS4206 (Internal Analog 3.1/2.0)

Backlight (brightness) control		Requires asmc(4) and acpi_video(4) drivers
Input devices	Keyboard backlight		Requires asmc(4) and acpi_video(4) drivers

Touchpad

Requires wsp(4) driver

Media keys	Brightness keys	Requires sysutils/asmctl port
	Volume keys	Doesn't work out of the box
Network	Ethernet	✔	Works out of the box with bge(4) driver
	Wi-Fi	✘	BCM4331's driver not ready yet
Other	Battery	✔	Works out of the box
	Bluetooth		Untested but detected
	CD/DVD drive	✔	Works out of the box
	Fan		Requires coretemp(4) driver
	SD card reader	✔	Works out of the box
	Suspend & resume		Requires sysctl hw.acpi.lid_switch_state=S3
	Webcam		Untested but detected
	Ports	DisplayPort	Untested but detected
		FireWire	Untested but detected
		Thunderbolt	✘
		USB	✔
		Headphone jack	✔ Available on pcm1
Sound	Speakers		Requires tweaking to power up the sub-woofer
Last update: 2021-06-13 12:58:27+0200

• 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

• 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 the pins need to be ajusted via sysctl(8). Put this on /etc/sysctl.conf:

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 autosense 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.

• Allow of equalizers in mixer applications is possible via the following device hints 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

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

1. 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

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

kern.evdev.rcpt_mask=3