<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - LG 31MU97 monitor native resolution is 4096x2160, but highest mode found is 3840x2160" href="https://bugs.freedesktop.org/show_bug.cgi?id=108081#c23">Comment # 23</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - LG 31MU97 monitor native resolution is 4096x2160, but highest mode found is 3840x2160" href="https://bugs.freedesktop.org/show_bug.cgi?id=108081">bug 108081</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>(In reply to Brian Vincent from <a href="show_bug.cgi?id=108081#c22">comment #22</a>) > Created <a href="attachment.cgi?id=141863" name="attach_141863" title="dmesg drm-tip amdgpu machine drm.debug=0x1e">attachment 141863</a> <a href="attachment.cgi?id=141863&action=edit" title="dmesg drm-tip amdgpu machine drm.debug=0x1e">[details]</a> > dmesg drm-tip amdgpu machine drm.debug=0x1e > > I'm attaching dmesg with drm-tip on the amdgpu machine with drm.debug=0x1e > > So this amdgpu machine is a desktop, with the monitor directly plugged into > the video card with a full sized displayport cable. > > > More information on the problematic i915 laptop setup: > > It's a Dell XPS 15 9560. It's connected to a TB16 thunderbolt docking > station. Ah. Yes that would explain why amdgpu doesn't do mst. It's not the sink that's mst, it's just the dock. Still doesn't explain why i915 in sst mode didn't find the second extension block, and why in mst mode the extension block was corrupted even with the no_stop_bit patch.</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> <li>You are the assignee for the bug.</li> </ul> </body> </html>