<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [IGT] igt@* - dmesg-warn *ERROR* Link Training Unsuccessful" href="https://bugs.freedesktop.org/show_bug.cgi?id=103558#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [IGT] igt@* - dmesg-warn *ERROR* Link Training Unsuccessful" href="https://bugs.freedesktop.org/show_bug.cgi?id=103558">bug 103558</a> from <a class="email" href="mailto:marta.lofstedt@intel.com" title="Marta Löfstedt <marta.lofstedt@intel.com>"> Marta Löfstedt</a> <pre>More from IRC #intel-gfx: <marta> shashank_sharma, ^^ could you comment if different KVM could affect the frequency of the link-training on KBL? ... <tsa> marta: but they are the same kvm model, just that we need 2 to connect 7 hosts <tsa> same kind of hdmi dummy attached, even <shashank_sharma> marta: marta, there is a fair possibility, as KVM acts as a sink for LSPCON/HDMI devices <shashank_sharma> marta: in fact while doing some experiments on LSPCON + KVM tsa and jsaa_ also observed some difference in behavior, to the good or the bad side marta> shashank_sharma, we still have to support all setups, but maybe this is a lead to get yet another LSPCON FW upgrade? <shashank_sharma> marta: I would agree as a long term goal, but currently focus should be on direct link training failures, KVM would be an added variable <jsaa> marta: kvmäs used are <a href="http://www.aten.com/global/en/products/kvm/desktop-kvm-switches/cs1794/#.WgVv_dNL9aQ">http://www.aten.com/global/en/products/kvm/desktop-kvm-switches/cs1794/#.WgVv_dNL9aQ</a> <shashank_sharma> marta: are these boards RVPs or NUCs ? <tsa> NUCs <tsa> KBL7i5NUC, full height model <tsa> exact model NUC7i5BNH <shashank_sharma> tsa/marta: As per MCA, there is a Phy tuning binary, which should be provided with every MCA LSPCON. If that binary is not configured properly, there can be random Link training issues <shashank_sharma> As per them, during commercialization, these binaries are flashed as per HW <shashank_sharma> As the NUC devices come with pre-installed windows, I would assume they are with proper PHY tuning binaries <shashank_sharma> so I was hoping for an answer "RVP" but you broke my heart :P <jsaa> shashank_sharma: NUC reliable for CI that is why mojority those. <jsaa> majority <shashank_sharma> agree ! <jsaa> but many others: <a href="https://intel-gfx-ci.01.org/hardware.html">https://intel-gfx-ci.01.org/hardware.html</a> <shashank_sharma> jsaa: But looks like the link training failures are on NUCs only <shashank_sharma> so need to talk to MCA again on these errors <shashank_sharma> interestingly, I have same model kbl NUC NUC7i5BNH and I could not see any LT issues</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>