<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [DP] [SKL] 5k tiled dual DP (two-pipe, two-port) display sync issues" href="https://bugs.freedesktop.org/show_bug.cgi?id=97244#c55">Comment # 55</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [DP] [SKL] 5k tiled dual DP (two-pipe, two-port) display sync issues" href="https://bugs.freedesktop.org/show_bug.cgi?id=97244">bug 97244</a> from <a class="email" href="mailto:manasi.d.navare@intel.com" title="Manasi <manasi.d.navare@intel.com>"> Manasi</a> <pre>(In reply to Tomas Bzatek from <a href="show_bug.cgi?id=97244#c52">comment #52</a>) > (In reply to Diep Pham from <a href="show_bug.cgi?id=97244#c51">comment #51</a>) > > I bought the LG Ultrafine 5k and with latest kernel (5.2.8-200.fc30.x86_64), > > the montior is detected correctly and works without any problem. Although, > > the maximum resolution is only 4096x2304, not 5120 × 2880. > > Yes, same as with the Dell UP2715K - the 4k resolution is the preferred one > as a fallback. You need to manually set 2560x2880 on both outputs. > > Since the LG Ultrafine 5K is a TB3 monitor, I suppose you see two panels > attached. Please verify that the 2560x2880 resolution is available on both. Hi Tomas, This issue with 5K tiled display synchronization should be fixed on the ICL+ based Intel graphics that has a transcoder port sync feature to synchronize the vblanks and timings on both ports. Please see the patch series on the M-L: <a href="https://patchwork.kernel.org/project/intel-gfx/list/?series=137339">https://patchwork.kernel.org/project/intel-gfx/list/?series=137339</a> We are also working on trying to find an alternate solution to avoid this screen corruption on older platforms. Manasi</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>