<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#c30">Comment # 30</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:shashank.sharma@intel.com" title="shashank.sharma@intel.com <shashank.sharma@intel.com>"> shashank.sharma@intel.com</a> <pre>(In reply to Ander Conselvan de Oliveira from <a href="show_bug.cgi?id=100440#c28">comment #28</a>) > (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? > Don't worry about it, I was using DRM_ERROR(Shashank:) for my logs, there is no error here :) > > [ 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. I also thought so, but this lib names intel-drv.so, which seems specific to our HW, so there could be a relation. I will share the full logs tomorrow, as I don't have access to the board today. Meanwhile, can you please give it a try, by just replacing your intel_drv.so with attached one, and try this modeset ? This will help us to focus on right path.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>