[Bug 83348] No beamer on VGA

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83348

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|chris at chris-wilson.co.uk    |intel-gfx-bugs at lists.freede
                   |                            |sktop.org
                 CC|                            |intel-gfx-bugs at lists.freede
                   |                            |sktop.org
            Product|xorg                        |DRI
          Component|Driver/intel                |DRM/Intel

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
To be clear about the sequence of events:

You boot up without the projector attached, and then once the system is up and
you have logged in, you attach the projector using VGA.

The last thing in the dmesg is:


[  479.148038] [drm:intel_hpd_irq_handler], Received HPD interrupt on PIN 4 -
cnt: 0
[  479.148085] [drm:i915_hotplug_work_func], running encoder hotplug functions
[  479.148090] [drm:i915_hotplug_work_func], Connector HDMI-A-1 (pin 4)
received hotplug event.
[  479.148093] [drm:i915_hotplug_work_func], Connector DP-1 (pin 4) received
hotplug event.
[  479.148099] [drm:intel_hdmi_detect], [CONNECTOR:18:HDMI-A-1]
[  479.148285] [drm:gmbus_xfer], GMBUS [i915 gmbus dpb] NAK for addr: 0050 r(1)
[  479.148300] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter
i915 gmbus dpb
[  479.148307] [drm:intel_hpd_irq_event], [CONNECTOR:18:HDMI-A-1] status
updated from 2 to 2
[  479.148318] [drm:intel_dp_detect], [CONNECTOR:22:DP-1]
[  479.148648] [drm:intel_dp_get_dpcd], DPCD: 11 0a 82 01 00 03 01 81 00 00 00
00 00 00 00
[  479.151523] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.152770] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.155201] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.156365] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.158640] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.159845] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.162171] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.163361] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.165640] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.166867] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.166874] [drm:intel_dp_detect_dpcd], Broken DP branch device, ignoring
[  479.166880] [drm:intel_hpd_irq_event], [CONNECTOR:22:DP-1] status updated
from 2 to 2
[  479.251691] [drm:intel_hpd_irq_handler], Received HPD interrupt on PIN 4 -
cnt: 1
[  479.251742] [drm:i915_hotplug_work_func], running encoder hotplug functions
[  479.251752] [drm:i915_hotplug_work_func], Connector HDMI-A-1 (pin 4)
received hotplug event.
[  479.251761] [drm:i915_hotplug_work_func], Connector DP-1 (pin 4) received
hotplug event.
[  479.251770] [drm:intel_hdmi_detect], [CONNECTOR:18:HDMI-A-1]
[  479.251966] [drm:gmbus_xfer], GMBUS [i915 gmbus dpb] NAK for addr: 0050 r(1)
[  479.251976] [drm:drm_do_probe_ddc_edid], drm: skipping non-existent adapter
i915 gmbus dpb
[  479.251980] [drm:intel_hpd_irq_event], [CONNECTOR:18:HDMI-A-1] status
updated from 2 to 2
[  479.251985] [drm:intel_dp_detect], [CONNECTOR:22:DP-1]
[  479.252328] [drm:intel_dp_get_dpcd], DPCD: 11 0a 82 01 00 03 01 81 00 00 00
00 00 00 00
[  479.255185] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.256454] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.258762] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.259998] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.262330] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.263536] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.265814] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.267049] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.269332] [drm:intel_dp_i2c_aux_ch], aux_i2c nack
[  479.270446] [drm:i2c_algo_dp_aux_xfer], dp_aux_xfer return -121
[  479.270452] [drm:intel_dp_detect_dpcd], Broken DP branch device, ignoring
[  479.270458] [drm:intel_hpd_irq_event], [CONNECTOR:22:DP-1] status updated
from 2 to 2

which I wonder if that is the projector being plugged in.

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