[Bug 106223] [KBL-R] DP link training failures lead to downgraded link parameters and resolution

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Apr 27 13:15:04 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=106223

--- Comment #36 from shashank.sharma at intel.com <shashank.sharma at intel.com> ---
(In reply to Jani Nikula from comment #34)
> From the logs:
> 
> [   51.556954] [drm:drm_dp_read_desc [drm_kms_helper]] DP branch: OUI
> 00-1c-f8 dev-ID 176GB0 HW-rev 1.0 SW-rev 7.38 quirks 0x0000
> 
> That's Parade OUI I think.

Yes this is Parade OUI, but Parade LSPCON device is PS175. 
>From the comment here, this looks like PS176, so probably an external device or
cable maybe. 

- Shashank

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