Hey everyone, I'm dealing with a persistent IOKit daemon stall issue on my HP Pavilion 14 al-001la with BCM94352Z WiFi/Bluetooth card running macOS Monterey. I've exhausted almost every solution I can find and need help.
**Hardware:**
- HP Pavilion 14 al-001la laptop
- BCM94352Z WiFi/Bluetooth card
- macOS Monterey
**The Issue:**
System boots perfectly without WiFi/BT kexts, but stalls at "iokit daemon stall (60s) 'pxsx'" when I add Broadcom kexts. This happens even with just the WiFi kext (AirportBrcmFixup.kext) - no Bluetooth kexts needed.
**Everything I've Tried:**
### USB Port Mapping:
- ✅ USB port mapping with Hackintool (system boots fine without kexts)
- ✅ Disabled XhciPortLimit in config.plist [1](#44-0)
- ✅ Removed all Hackintool-generated SSDTs, kept only essential ones (SSDT-PLUG, SSDT-EC-USBX)
### HP-Specific Configuration:
- ✅ Added HP-specific quirks: UnblockFsConnect and LapicKernelPanic [2](#44-1)
- ✅ Set DisableIoMapper: YES [3](#44-2)
### Boot Arguments Tested:
- ✅ npci=0x2000
- ✅ npci=0x3000
- ✅ dart=0
- ✅ -wegnoegpu -igfxnotelemetryload
- ✅ Various combinations of the above
### Kext Configuration:
- ✅ Proper loading order for BCM94352Z in Monterey [4](#44-3) :
1. Lilu.kext (first)
2. BrcmFirmwareData.kext
3. BrcmPatchRAM3.kext
4. AirportBrcmFixup.kext
5. BlueToolFixup.kext [5](#44-4)
### ACPI Solutions:
- ✅ Created SSDT-PXSX-OFF.aml to disable the problematic device:
```asl
DefinitionBlock ("", "SSDT", 2, "OC", "PXSXOFF", 0x00000000)
{
External (_SB_.PCI0.PXSX, DeviceObj)
Scope (_SB_.PCI0.PXSX)
{
Method (_STA, 0, NotSerialized)
{
Return (Zero)
}
}
}
Additional Notes:
✅ System boots perfectly without any Broadcom kexts
✅ Issue occurs with just AirportBrcmFixup.kext (no Bluetooth kexts needed)
✅ Tried fresh kext downloads from official acidanthera releases
✅ Above 4G Decoding not available in HP BIOS (tried npci workarounds)
The Problem:
The "pxsx" device appears to be an internal PCI bridge that macOS can't initialize when Broadcom kexts are loaded. This seems to be a hardware-specific conflict between my HP Pavilion's PCI configuration and the BCM94352Z card.
What I Need:
Has anyone encountered this specific "pxsx" stall issue with HP hardware and Broadcom cards? Are there any other solutions I haven't tried? Could this be a fundamental incompatibility between my HP Pavilion's PCI layout and the BCM94352Z?
Any help would be greatly appreciated. I'm at the point where I might need to consider a different WiFi card or wait for kext updates.
Thanks in advance!
https://drive.google.com/file/d/1VCwDgdErdYMj_njX5Z2dSXVmmMtwHOfU/view?usp=sharing, https://drive.google.com/file/d/1nvayc3wPIL1WVx85OGrQCdGY4E0a9ocB/view?usp=sharing, https://drive.google.com/file/d/1qNa7Bom09n0kUFAjb-hj-ZJiVVg6ytct/view?usp=sharing Hi MaLd0n, thanks for your reply. I’m attaching: - My EFI folder - An IOREG captured WITHOUT Broadcom kexts loaded Unfortunately, I cannot provide an IOREG with Broadcom enabled because the system never reaches the desktop. As soon as AirportBrcmFixup.kext (even alone) is loaded, the boot stalls at: IOKit daemon stall (60s): "pxsx" So the IOREG I’m providing is from a successful boot without any Broadcom kexts. Please let me know if this is sufficient to analyze the PCI / PXSX issue on this HP Pavilion. Thanks in advance for your time.