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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Can't get triple monitors working"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94248#c60">Comment # 60</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Can't get triple monitors working"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94248">bug 94248</a>
from <span class="vcard"><a class="email" href="mailto:bz@gemtek.ch" title="bz@gemtek.ch">bz@gemtek.ch</a>
</span></b>
<pre>Don't know how many (if any) changes you've made to the DRM driver up to Kernel
4.7rc4, but I'm now noticing that the HDMI monitor (i.e. the one the driver
thinks is connected to DP-2) is going completely black for a second or two (and
the HDMI audio is also being interrupted).
This might be a separate issue of course, but I thought I'd mention it here
just in case.
Here's a snip from dmesg...
009.345353] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
[ 4009.345356] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message,
retry
[ 4009.345604] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050
w(1)
[ 4009.345609] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter
i915 gmbus dpb
[ 4009.345861] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040
w(1)
[ 4009.345863] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message,
retry
[ 4009.346125] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040
w(1)
[ 4009.346130] [drm:drm_helper_probe_single_connector_modes]
[CONNECTOR:43:HDMI-A-1] disconnected
[ 4009.346154] [drm:drm_helper_probe_single_connector_modes]
[CONNECTOR:46:HDMI-A-2]
[ 4009.346156] [drm:intel_hdmi_detect] [CONNECTOR:46:HDMI-A-2]
[ 4009.470825] [drm:intel_hdmi_detect] HDMI live status down
[ 4009.470834] [drm:drm_helper_probe_single_connector_modes]
[CONNECTOR:46:HDMI-A-2] disconnected
[ 4009.470860] [drm:drm_helper_probe_single_connector_modes]
[CONNECTOR:52:HDMI-A-3]
[ 4009.470864] [drm:intel_hdmi_detect] [CONNECTOR:52:HDMI-A-3]
[ 4009.471174] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050
w(1)
[ 4009.471180] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message,
retry
[ 4009.471468] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050
w(1)
[ 4009.471476] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter
i915 gmbus dpd
[ 4009.471781] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040
w(1)
[ 4009.471787] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message,
retry
[ 4009.472089] [drm:do_gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040
w(1)
[ 4009.472099] [drm:drm_helper_probe_single_connector_modes]
[CONNECTOR:52:HDMI-A-3] disconnected</pre>
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