<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - two external screens permanently go blank on HP EliteBook Folio G1" href="https://bugs.freedesktop.org/show_bug.cgi?id=108462#c40">Comment # 40</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - two external screens permanently go blank on HP EliteBook Folio G1" href="https://bugs.freedesktop.org/show_bug.cgi?id=108462">bug 108462</a> from <a class="email" href="mailto:karthik.b.s@intel.com" title="Karthik B S <karthik.b.s@intel.com>"> Karthik B S</a> <pre>I went through both the logs and checked the DDB /watermark register write's. They look fine, although I see the WM registers only for Pipe A. Somehow it seems like many reg read/write's are missing. Also I don't see any read/write of the Plane control registers and without that it would not be possible to verify the correctness of DDB allocation. I would need to bug you for more logs again and this would be never ending, instead I think it would be better if I'm able to reproduce the issue locally. So we'll give one last try for the same. Firstly it would be good for me if it would be possible to reproduce to the issue on DRM-TIP. And also please share the config file you used with the kernel together with the resolutions of both the displays. And I believe the issue is only reproduced on the display config mentioned by you right? * one directly by USB-C display port cable * one via docking station connected with HDMI Hopefully I'm able to reproduce the issue locally time time and then root cause the issue asap.</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>