keyNotFound(code: "CHWA")

[Tackoil]

After updating the macOS 15.0 beta 5, bclm is not working well. Running read or write will get an error (maybe) following.

keyNotFound(code: "CHWA")

I know that using the beta version of macOS is my own risk. Creating this issue is just for a notice about this change.

[ftpd]

I experience the same issue - just for the record.

[Zw96042]

I'm also experiencing this issue

[IShinji]

same

[CalebMtuwetaM]

I have the same issue

[zackelia]

Ouch, not sure what we can do without it. Unless this was accidental, we'll just have to wait and see what replacement key (if there will be one) can do the same trick. Before, we learned about CHWA from the Asahi SMC driver so we'll see what findings they have soon I assume: https://github.com/AsahiLinux/linux/blob/asahi/drivers/power/supply/macsmc_power.c

[yanzhem02]

I updated my system to 15.1 beta 2 and encounter the same issue.

[TrainerBlade]

same error message. using MacOS 15.0 beta (24A5320a)

[samzong]

same with me. Version 15.1 Beta (24B5024e)

[TimNN]

Asahi now seems to have changes for the latest firmware: AsahiLinux/linux@c6ccbdd

[zackelia]

@TimNN Good eye! I'll install Sequoia on another volume and test that out.

[GimmiGoose]

Got this too on 15.1 I am using AlDente until it gets fixed, but will definitely switch back once it is fixed, because I prefer a more "native" solution.

[TimNN]

When trying to manually write to (or read from) CHLS (via smc), I'm getting kIOReturnNotPrivileged:

$ sudo smc -k CHLS -w 0150
Error: SMCWriteKey() = e00002c1

Disabling SIP didn't seem to help either...

[zackelia]

Getting the same error even just reading CHLS. From Console:

kernel    SMCC::smcYPCEventCheck ERROR: not entitled for key CHLS

Not really sure what entitlement I need to sign with to get access to this key. com.apple.private.applesmc.user-access stood out to me but I can't sign with that one.