Dell XPS 13 9350 can someone help me understand my dmesg output?

https://privatebin.net/?2fb34b881778f7bc#ArR6ffStTJmFkqaf5YDdiCzbM38o5pmkN6zeRWAWh2ei

Sound has stopped working, I can't alt+tab anymore, weird UI/UX behavior (application windows won't hover over eachother, basically I can multi-task).

System:
  Host: beast Kernel: 5.5.7-1-MANJARO x86_64 bits: 64 compiler: gcc v: 9.2.1 
  Desktop: Xfce 4.14.2 tk: Gtk 3.24.13 info: xfce4-panel dm: LightDM 1.30.0 
  Distro: Manjaro Linux 
Machine:
  Type: Laptop System: Dell product: XPS 13 9350 v: N/A serial: <filter> 
  Chassis: type: 9 serial: <filter> 
  Mobo: Dell model: 09JHRY v: A00 serial: <filter> UEFI: Dell v: 1.12.2 
  date: 12/15/2019 
Battery:
  ID-1: BAT0 charge: 7.2 Wh condition: 7.2/57.5 Wh (13%) volts: 8.5/7.6 
  model: SMP DELL JHXPY53 type: Li-poly serial: <filter> status: Full 
CPU:
  Topology: Dual Core model: Intel Core i7-6560U bits: 64 type: MT MCP 
  arch: Skylake rev: 3 L2 cache: 4096 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 17605 
  Speed: 891 MHz min/max: 400/3200 MHz Core speeds (MHz): 1: 800 2: 800 
  3: 800 4: 800 
Graphics:
  Device-1: Intel Iris Graphics 540 vendor: Dell driver: i915 v: kernel 
  bus ID: 00:02.0 chip ID: 8086:1926 
  Display: x11 server: X.Org 1.20.7 driver: intel resolution: 2048x1152~60Hz 
  OpenGL: renderer: Mesa DRI Intel Iris Graphics 540 (Skylake GT3e) 
  v: 4.6 Mesa 19.3.4 compat-v: 3.0 direct render: Yes 
Audio:
  Device-1: Intel Sunrise Point-LP HD Audio vendor: Dell 
  driver: snd_hda_intel v: kernel bus ID: 00:1f.3 chip ID: 8086:9d70 
  Sound Server: ALSA v: k5.5.7-1-MANJARO 
Network:
  Device-1: Broadcom and subsidiaries BCM4350 802.11ac Wireless Network 
  Adapter 
  vendor: Dell driver: brcmfmac v: kernel port: f040 bus ID: 3a:00.0 
  chip ID: 14e4:43a3 
  IF: wlp58s0 state: up mac: <filter> 
Drives:
  Local Storage: total: 476.94 GiB used: 309.75 GiB (64.9%) 
  ID-1: /dev/nvme0n1 vendor: Toshiba model: THNSN5512GPU7 NVMe 512GB 
  size: 476.94 GiB speed: 31.6 Gb/s lanes: 4 serial: <filter> rev: 57DA4103 
  scheme: GPT 
Partition:
  ID-1: / size: 451.35 GiB used: 309.72 GiB (68.6%) fs: ext4 
  dev: /dev/nvme0n1p2 
  ID-2: swap-1 size: 17.08 GiB used: 0 KiB (0.0%) fs: swap 
  dev: /dev/nvme0n1p3 
Sensors:
  System Temperatures: cpu: 52.5 C mobo: N/A 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 284 Uptime: 30m Memory: 15.49 GiB used: 2.29 GiB (14.8%) 
  Init: systemd v: 242 Compilers: gcc: 9.2.1 alt: 8 clang: 9.0.1 Shell: bash 
  v: 5.0.16 running in: x-terminal-emul inxi: 3.0.37

Edit:
This may be a point of interest:

[    0.284748] DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x000000007b800000-0x000000007fffffff], contact BIOS vendor for fixes
[    0.284748] ------------[ cut here ]------------
[    0.284750] Your BIOS is broken; bad RMRR [0x000000007b800000-0x000000007fffffff]
               BIOS vendor: Dell Inc.; Ver: 1.12.2; Product Version: 
[    0.284763] WARNING: CPU: 0 PID: 0 at drivers/iommu/intel-iommu.c:4333 dmar_parse_one_rmrr+0x7d/0x10d
[    0.284763] Modules linked in:
[    0.284766] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.7-1-MANJARO #1
[    0.284767] Hardware name: Dell Inc. XPS 13 9350/09JHRY, BIOS 1.12.2 12/15/2019
[    0.284769] RIP: 0010:dmar_parse_one_rmrr+0x7d/0x10d
[    0.284771] Code: bf 01 00 00 00 48 89 c5 e8 b1 04 dc fe 48 8b 53 10 48 8b 73 08 4d 89 e1 48 89 c1 49 89 e8 48 c7 c7 20 09 78 b6 e8 d6 e0 6f fe <0f> 0b 48 8b 3d 5b d7 82 ff ba 38 00 00 00 be c0 0d 00 00 e8 ec 9e
[    0.284772] RSP: 0000:ffffffffb6a03e08 EFLAGS: 00010286
[    0.284773] RAX: 0000000000000000 RBX: ffffacea40024c88 RCX: 0000000000000000
[    0.284774] RDX: 0000000000000002 RSI: 0000000000000086 RDI: 00000000ffffffff
[    0.284775] RBP: ffffffffb740000c R08: 00000000000000e5 R09: 0000000000000001
[    0.284776] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffffb64fd50c
[    0.284776] R13: ffffffffb6a03e58 R14: 0000000000005000 R15: 00000000640a5d36
[    0.284778] FS:  0000000000000000(0000) GS:ffff88feeec00000(0000) knlGS:0000000000000000
[    0.284779] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.284780] CR2: ffff88fe2ca01000 CR3: 00000003ac00a001 CR4: 00000000000606b0
[    0.284781] Call Trace:
[    0.284786]  dmar_walk_remapping_entries+0x76/0x120
[    0.284789]  dmar_table_init+0xce/0x15e
[    0.284791]  ? dmar_free_dev_scope+0x70/0x70
[    0.284793]  ? intel_iommu_setup+0x20b/0x20b
[    0.284795]  ? iommu_resume+0x1b0/0x1b0
[    0.284797]  ? amd_iommu_bind_pasid+0x200/0x200
[    0.284798]  ? amd_iommu_v2_init+0x6d/0x6d
[    0.284801]  intel_prepare_irq_remapping+0x3d/0x227
[    0.284803]  irq_remapping_prepare+0x1d/0x5f
[    0.284809]  enable_IR_x2apic+0x21/0x188
[    0.284812]  default_setup_apic_routing+0x12/0x6f
[    0.284814]  apic_intr_mode_init+0xc9/0xec
[    0.284816]  x86_late_time_init+0x20/0x25
[    0.284818]  start_kernel+0x4cd/0x586
[    0.284821]  secondary_startup_64+0xb6/0xc0
[    0.284824] ---[ end trace 7a6c1744d462f2d3 ]---

Oh yea, I just ran a firmware update... bios was flashed and updated. Still same problem.

Update: playing around with earphones along with alsamixer and pavucontrol
checking out: cat /proc/asound/cards
and running: speaker-test -c 2 -l 1 -D hw:0while pluging my headphnejack in and out of the AUX brought back my sound?!?

But the ALT+TAB mutli-tasking issue still occurs

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