<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [i915] One of two displays not detected" href="https://bugs.freedesktop.org/show_bug.cgi?id=99384#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [i915] One of two displays not detected" href="https://bugs.freedesktop.org/show_bug.cgi?id=99384">bug 99384</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>Jan 09 20:09:34 r-schwarzschild kernel: [drm:intel_hdmi_detect [i915]] [CONNECTOR:59:HDMI-A-1] Jan 09 20:09:34 r-schwarzschild kernel: [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode HDMI ID: DP-HDMI ADAPTOR\004 (err 0) Jan 09 20:09:34 r-schwarzschild kernel: [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode adaptor ID: a0 (err 0) Jan 09 20:09:34 r-schwarzschild kernel: [drm:intel_hdmi_set_edid [i915]] DP dual mode adaptor (type 2 HDMI) detected (max TMDS clock: 300000 kHz) Jan 09 20:09:34 r-schwarzschild kernel: [drm:i915_hotplug_work_func [i915]] [CONNECTOR:59:HDMI-A-1] status updated from disconnected to connected So there we were able to read the EDID. [CONNECTOR:59:HDMI-A-1] Jan 09 20:09:42 r-schwarzschild kernel: [drm:intel_hdmi_detect [i915]] [CONNECTOR:59:HDMI-A-1] Jan 09 20:09:42 r-schwarzschild kernel: [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1) Jan 09 20:09:42 r-schwarzschild kernel: [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] NAK on first message, retry Jan 09 20:09:42 r-schwarzschild kernel: [drm:gmbus_xfer [i915]] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1) Jan 09 20:09:42 r-schwarzschild kernel: [drm:drm_do_probe_ddc_edid [drm]] drm: skipping non-existent adapter i915 gmbus dpb Jan 09 20:09:42 r-schwarzschild kernel: [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode HDMI ID: DP-HDMI ADAPTOR\004 (err 0) Jan 09 20:09:42 r-schwarzschild kernel: [drm:drm_dp_dual_mode_detect [drm_kms_helper]] DP dual mode adaptor ID: a0 (err 0) Jan 09 20:09:42 r-schwarzschild kernel: [drm:intel_hdmi_set_edid [i915]] DP dual mode adaptor (type 2 HDMI) detected (max TMDS clock: 300000 kHz) Jan 09 20:09:42 r-schwarzschild kernel: [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]] [CONNECTOR:59:HDMI-A-1] status updated from connected to disconnected Jan 09 20:09:42 r-schwarzschild kernel: [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]] [CONNECTOR:59:HDMI-A-1] disconnected but here a bit later we are again unable to read it. It's quite weird since the i2c bus seems to be fine itself since we can detect the DP dual mode chip present on the bus. My only theory is that the dual mode chip is somehow going crazy and preventing the i2c access for the EDID read from reaching the actual display.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>