<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - booting gives black screen [drm:intel_dp_start_link_train] [CONNECTOR:67:eDP-1] Link Training failed at link rate = 162000, lane count = 2" href="https://bugs.freedesktop.org/show_bug.cgi?id=109398#c10">Comment # 10</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - booting gives black screen [drm:intel_dp_start_link_train] [CONNECTOR:67:eDP-1] Link Training failed at link rate = 162000, lane count = 2" href="https://bugs.freedesktop.org/show_bug.cgi?id=109398">bug 109398</a> from <a class="email" href="mailto:seppe.hoogzaad@gmail.com" title="Seppe <seppe.hoogzaad@gmail.com>"> Seppe</a> <pre>On the stable-kernel i did: > git checkout -b branch.4.20.4.test v4.20.4 > git revert 1e712535c51ab025ebc776d4405683d81521996d Revert "drm/i915/dp: Link train Fallback on eDP only if fallback link BW can fit panel's native mode" > git revert c0cfb10d9e1de490e36d3b9d4228c0ea0ca30677 Revert "drm/i915/edp: Do not do link training fallback or prune modes on EDP" revert I build this kernel with the default .config options for the graphics. Booted with the kernel parameters: splash=silent quiet showopts drm.debug=14 log_buf_len=4M The result: Two white flashes, then a black screen. No logo, no nothing. I could not login remotely. I therefore attached the full log from the journal.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>