Bug Check 0x1D8: UCMUCSI_FAILURE
The UCMUCSI_FAILURE bug check has a value of 0x000001D8. It indicates that the UCSI class extension has encountered an error.
Important
This article is for programmers. If you're a customer who has received a blue screen error code while using your computer, see Troubleshoot blue screen errors.
UCMUCSI_FAILURE Parameters
| Parameter | Description |
|---|---|
| 1 | Type of failure. VALUES: 0x0 : A UCSI command has timed out because the firmware did not respond to the command in time. 0x1 : A UCSI command execution failed either because the client driver returned failure or because the firmware returned an error code. |
| 2 | The UCSI command value. |
| 3 | If non-zero, the pointer to additional information (use dt UcmUcsiCx!UCMUCSICX_TRIAGE). |
| 4 | Reserved. |
Cause
The UcmUcsi driver has encountered an error. The driver has found settings to trigger a system crash instead of a livedump.
Resolution
A UCSI Command typically fails when UCSI firmware is not responsive and UcmUcsiCx times out on a UCSI command or the UCSI firmware has indicated an error in response to a critical UCSI command sent by UcmUcsiCx.
Run !rcdrkd.rcdrlogdump UcmUcsiCx for more information on the cause of this failure.
For more information on analyzing this bug check, see this blog post - Debugging UCSI firmware failures.