Description: With introduction of 7.1sr4 we added a feature that allows SSO (Single Sign On) to function if special Y-mode setting is needed to resolve Black Screen blinking cursor issues past PBL\V5 with OPAL hard drives. However on some client environments Y-mode did not carry over SSO after preboot .
Hardware: HP 840 G2 , HP Zbook 15 , OPAL
Software: Version 7.1sr4 , Wave Data Protection Software
Workaround: Uninstall Wave Data Protection agent as it causes conflict with SDDisk2k kernel driver
Reference
SD-21063
Searchwords: OPAL, Hardware Encryption , Black Screen , SSO , Single Signon ,3rd party protection software
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- Updated on Feb 6, 2026
- 1 minute(s) read
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