<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [HSW] One of two displays not detected" href="https://bugs.freedesktop.org/show_bug.cgi?id=99384#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [HSW] One of two displays not detected" href="https://bugs.freedesktop.org/show_bug.cgi?id=99384">bug 99384</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>Something fishy with MST. [ 48.701444] [drm:drm_dp_send_link_address] link address reply: 3 [ 48.701446] [drm:drm_dp_send_link_address] port 0: input 1, pdt: 1, pn: 0, dpcd_rev: 00, mcs: 1, ddps: 1, ldps 0, sdp 0/0 [ 48.701447] [drm:drm_dp_send_link_address] port 1: input 0, pdt: 3, pn: 8, dpcd_rev: 12, mcs: 0, ddps: 1, ldps 0, sdp 1/2 [ 48.701448] [drm:drm_dp_send_link_address] port 2: input 0, pdt: 0, pn: 1, dpcd_rev: 00, mcs: 0, ddps: 0, ldps 0, sdp 0/0 So port 1 looks all correct. It claims to have a peer device type of SST sink or stream sink. the logical port numbers looks fine, and the "display device plug status" is 1 and it reports it can handle some streams. We seem to be registering the connector for it, but then we're somehow unable to detect it. I don't really see why that would happen. I think someone needs to expand the MST code debug output to make any sense of this. Also the current debug messages seem rather useless without having the spec at hand. So someone might want to improve them as well.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>