<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [dc][kabini] Cannot find any crtc or sizes" href="https://bugs.freedesktop.org/show_bug.cgi?id=105880#c12">Comment # 12</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [dc][kabini] Cannot find any crtc or sizes" href="https://bugs.freedesktop.org/show_bug.cgi?id=105880">bug 105880</a> from <a class="email" href="mailto:chithanh@gentoo.org" title="Chí-Thanh Christopher Nguyễn <chithanh@gentoo.org>"> Chí-Thanh Christopher Nguyễn</a> <pre>So, with the additional dmesg output from kernel 4.15, the following appeared interesting: [ 43.356569] [drm] DC: create_links: connectors_num: physical:3, virtual:0 [ 43.356583] [drm] Unsupported Connector type:14! [ 43.356588] [drm] Connector[1] description:signal 4 [ 43.356617] [drm] Unsupported Connector type:5! If I understand drivers/gpu/drm/amd/dal/dc/core/dc_link.c correctly, the following connector types are supported in construct() CONNECTOR_ID_HDMI_TYPE_A CONNECTOR_ID_SINGLE_LINK_DVID CONNECTOR_ID_SINGLE_LINK_DVII CONNECTOR_ID_DUAL_LINK_DVID CONNECTOR_ID_DUAL_LINK_DVII CONNECTOR_ID_DISPLAY_PORT CONNECTOR_ID_EDP else the following code will print the above error message dal_logger_write(dc_ctx->logger, LOG_MAJOR_WARNING, LOG_MINOR_TM_LINK_SRV, "Unsupported Connector type:%d!\n", link->link_id.id); According to display/include/grph_object_id.h CONNECTOR_ID_VGA = 5 CONNECTOR_ID_LVDS = 14 which would explain why no working connectors are found. I will try to find an HDMI monitor to see if it lights up with amdgpu DC.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>