<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [GLK] [IGT] testdisplay -a shows corruption on HDMI 4k display" href="https://bugs.freedesktop.org/show_bug.cgi?id=100440#c28">Comment # 28</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [GLK] [IGT] testdisplay -a shows corruption on HDMI 4k display" href="https://bugs.freedesktop.org/show_bug.cgi?id=100440">bug 100440</a> from <a class="email" href="mailto:conselvan2@gmail.com" title="Ander Conselvan de Oliveira <conselvan2@gmail.com>"> Ander Conselvan de Oliveira</a> <pre>(In reply to <a href="mailto:shashank.sharma@intel.com">shashank.sharma@intel.com</a> from <a href="show_bug.cgi?id=100440#c26">comment #26</a>) > I was able to get a proper modeset on the said mode (25x16) on same monitor, > using both Mint GUI as well as testdisplay. > There are 3 files attached with this message: > - Modeset 25x14 using Mint-GUI: Modeset 25x14 with GUI > - Modeset 25x14 using testdisplay: Modeset 25x14 with testdisplay > > The command used in testdisplay was: > ./testdisplay -f 241.5,2560,2608,2640,2720,1440,1443,1448,1481 > > I also confirmed that: > - It was 12 BPC modeset > - The scrambling and high tmds clock was enabled during this modeset. > [ 1145.592443] [drm:intel_hdmi_compute_config] Shashank: picking bpc to 12 > for HDMI output > [ 1145.593176] [drm:intel_hdmi_handle_sink_scrambling] Shashank: Setting > sink scrambling=0 tmds=0 for enc:DDI C connector:HDMI-A-2 > [ 1145.924969] [drm:intel_ddi_enable_transcoder_func] *ERROR* Shashank: Set > source scrambling Hmm, what happens in this *ERROR* case? > [ 1145.934277] [drm:intel_hdmi_handle_sink_scrambling] Shashank: Setting > sink scrambling=1 tmds=1 for enc:DDI C connector:HDMI-A-2 > > The only difference is, I was using an old intel_drv.so library. This lib > comes with X package I guess, as its location is > (/usr/lib/xorg/modules/drivers/intel_drv.so) This really shouldn't depend on user space, except for choosing the mode. Can you post a full dmesg log for both modesets. Maybe there is some slight difference between the modes that we're missing.</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>