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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BSW] HDMI hotplug does not working"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94592#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BSW] HDMI hotplug does not working"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94592">bug 94592</a>
from <span class="vcard"><a class="email" href="mailto:christophe.prigent@intel.com" title="cprigent <christophe.prigent@intel.com>"> <span class="fn">cprigent</span></a>
</span></b>
<pre>Reproduced with following steps:
1. Boot with screen connected, execute command "cat /proc/asound/card*/eld"
2. Execute command: "udevadm monitor"
3. Unplug HDMI cable
4. Plug it again, execute command "cat /proc/asound/card*/eld"
Actual result:
--------------
1.
$ cat /proc/asound/card*/eld*
monitor_present 1
eld_valid 1
monitor_name ASUS PB238
connection_type HDMI
eld_version [0x2] CEA-861D or below
edid_version [0x3] CEA-861-B, C or D
manufacture_id 0x6904
product_id 0x23a2
port_id 0x0
support_hdcp 0
support_ai 0
audio_sync_delay 0
speakers [0x1] FL/FR
sad_count 1
sad0_coding_type [0x1] LPCM
sad0_channels 2
sad0_rates [0x4e0] 32000 44100 48000 96000
sad0_bits [0xe0000] 16 20 24
monitor_present 0
eld_valid 0
3.
$ udevadm monitor
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent
KERNEL[97.764995] change /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV [97.768234] change /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
4. "udevadm monitor" does not output any log
$ cat /proc/asound/card*/eld*
monitor_present 0
eld_valid 0
monitor_present 0
eld_valid 0
Screen stays off</pre>
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