<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [GLK DSI] Black screen after grub - Ubuntu 18.04 - kernel latest tip 21.11.2018" href="https://bugs.freedesktop.org/show_bug.cgi?id=108826#c157">Comment # 157</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [GLK DSI] Black screen after grub - Ubuntu 18.04 - kernel latest tip 21.11.2018" href="https://bugs.freedesktop.org/show_bug.cgi?id=108826">bug 108826</a> from <a class="email" href="mailto:fabio.rifici@microtechsrl.com" title="Microtech <fabio.rifici@microtechsrl.com>"> Microtech</a> <pre>(In reply to Stanislav Lisovskiy from <a href="show_bug.cgi?id=108826#c151">comment #151</a>) > Hi, > > Sorry for a long reply. I'm currently on vacation. Yes it works on Windows, > I checked with codebase to which I have access and DSI/VBT code looks pretty > much same. However I'm still not able to compare with their GPIO and ACPI > code. It looks like we are lacking initialization of something or may be > GPIO mapping is not completely correct. However I checked with our pinctrl > developer person and from his point of view everything looks correct. > I have found that there are other controlable pins which affect DSI display, > not mentioned in VBT or manual, which makes me believe there is something > else we need to make it work. Unfortunately without exact pin description > and initialization sequences any hardware is a "blackbox". That is why I > asked for more detailed init description from panel vendor. I guess they > should have it anyway for panel testing purposes. I will be back on 17th and > start working on it immediately. Hi Stanislav, any news for us?</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>