No sound after upgrade Manjaro (macbook)

Hi I am a new at Manjaro. Yesterday I installed Manjaro on an old Macbook Pro mid 2012. Soud worked fine at first. The speakers stopped working after I did upgraded with

sudo pacman -Syu

I have browsed around the forum but this kind of problem seems to have different solutions for different hardware. Here is my info:

inxi -Fazy
  Kernel: 5.8.18-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.8-x86_64 
  root=UUID=87d44516-807e-42f9-b16b-deb4bb0d7967 rw quiet apparmor=1 
  security=apparmor resume=UUID=d8d6549a-b712-44a9-980b-ee5d48b23148 
  Desktop: Xfce 4.14.3 tk: Gtk 3.24.23 info: xfce4-panel wm: xfwm4 
  dm: LightDM 1.30.0 Distro: Manjaro Linux 
  Type: Laptop System: Apple product: MacBookPro9,2 v: 1.0 serial: <filter> 
  Chassis: type: 10 v: Mac-6F01561E16C75D06 serial: <filter> 
  Mobo: Apple model: Mac-6F01561E16C75D06 v: MacBookPro9,2 serial: <filter> 
  UEFI: Apple v: date: 06/13/2019 
  ID-1: BAT0 charge: 18.0 Wh condition: 41.7/62.9 Wh (66%) volts: 12.0/10.9 
  model: SMP bq20z451 type: Li-ion serial: N/A status: Charging cycles: 898 
  Info: Dual Core model: Intel Core i5-3210M bits: 64 type: MT MCP 
  arch: Ivy Bridge family: 6 model-id: 3A (58) stepping: 9 microcode: 21 
  L2 cache: 3072 KiB 
  flags: avx lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 19961 
  Speed: 2038 MHz min/max: 1200/3100 MHz Core speeds (MHz): 1: 1197 2: 1197 
  3: 1197 4: 1197 
  Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled 
  Type: l1tf 
  mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable 
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable 
  Type: meltdown mitigation: PTI 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, 
  IBRS_FW, STIBP: conditional, RSB filling 
  Type: srbds status: Vulnerable: No microcode 
  Type: tsx_async_abort status: Not affected 
  Device-1: Intel 3rd Gen Core processor Graphics vendor: Apple driver: i915 
  v: kernel bus ID: 00:02.0 chip ID: 8086:0166 
  Device-2: Apple FaceTime HD Camera type: USB driver: uvcvideo 
  bus ID: 1-1.1:3 chip ID: 05ac:8509 serial: <filter> 
  Display: x11 server: X.Org 1.20.9 driver: intel unloaded: modesetting 
  alternate: fbdev,vesa display ID: :0.0 screens: 1 
  Screen-1: 0 s-res: 1280x800 s-dpi: 96 s-size: 338x211mm (13.3x8.3") 
  s-diag: 398mm (15.7") 
  Monitor-1: LVDS1 res: 1280x800 hz: 60 dpi: 112 size: 290x180mm (11.4x7.1") 
  diag: 341mm (13.4") 
  OpenGL: renderer: Mesa DRI Intel HD Graphics 4000 (IVB GT2) 
  v: 4.2 Mesa 20.2.2 compat-v: 3.0 direct render: Yes 
  Device-1: Intel 7 Series/C216 Family High Definition Audio 
  driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:1e20 
  Sound Server: ALSA v: k5.8.18-1-MANJARO 
  Device-1: Broadcom and subsidiaries NetXtreme BCM57765 Gigabit Ethernet PCIe 
  driver: tg3 v: kernel port: efa0 bus ID: 01:00.0 chip ID: 14e4:16b4 
  IF: enp1s0f0 state: down mac: <filter> 
  Device-2: Broadcom and subsidiaries BCM4331 802.11a/b/g/n 
  driver: bcma-pci-bridge v: N/A modules: bcma port: efa0 bus ID: 02:00.0 
  chip ID: 14e4:4331 
  IF-ID-1: wlp2s0b1 state: up mac: <filter> 
  Local Storage: total: 465.76 GiB used: 11.26 GiB (2.4%) 
  SMART Message: Required tool smartctl not installed. Check --recommends 
  ID-1: /dev/sda vendor: Apple model: HDD HTS545050A7E362 size: 465.76 GiB 
  block size: physical: 4096 B logical: 512 B speed: 3.0 Gb/s 
  rotation: 5400 rpm serial: <filter> rev: B990 scheme: GPT 
  ID-1: / raw size: 224.61 GiB size: 220.09 GiB (97.99%) 
  used: 11.26 GiB (5.1%) fs: ext4 dev: /dev/sda6 
  Kernel: swappiness: 60 (default) cache pressure: 100 (default) 
  ID-1: swap-1 type: partition size: 7.20 GiB used: 0 KiB (0.0%) priority: -2 
  dev: /dev/sda7 
  System Temperatures: cpu: 60.0 C mobo: N/A 
  Fan Speeds (RPM): N/A 
  Processes: 206 Uptime: 29m Memory: 3.75 GiB used: 1.60 GiB (42.6%) 
  Init: systemd v: 246 Compilers: gcc: N/A Packages: 1161 pacman: 1157 
  lib: 353 flatpak: 0 snap: 4 Shell: Bash v: 5.0.18 running in: xfce4-terminal 
  inxi: 3.1.08