<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Black Screen on Ubuntu 18.04 + Intel Graphics with Kernel > 4.15.0-47" href="https://bugs.freedesktop.org/show_bug.cgi?id=111495#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Black Screen on Ubuntu 18.04 + Intel Graphics with Kernel > 4.15.0-47" href="https://bugs.freedesktop.org/show_bug.cgi?id=111495">bug 111495</a> from <a class="email" href="mailto:ianwmorrison@gmail.com" title="Linuxium <ianwmorrison@gmail.com>"> Linuxium</a> <pre>Since commit ca876c7483b6 ("gpiolib-acpi: make sure we trigger edge events at least once on boot") in v4.18 (and also in stable v4.14.68 as commit fbb37b72489d) the Linux kernel now calls _AEI edge handlers at boot. Unfortunately the MINIX Neo Z83-4 mini PC has a DSDT bug where some copy and pasted code for dealing with Micro USB-B connector host/device role switching messes with the DDC data pin from the HDMI connector (switching it to GPIO mode) breaking HDMI support. To fix this a proposed patch has already been submitted to linux-gpio that disables the running of _AEI edge event handlers at boot using a DMI based blacklist with the initial version of this blacklist contains the MINIX Neo Z83-4. This patch is currently under review.</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 assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>