New Odroid-H2 running Debian Stretch but no sound via the HDMI connection even though the device is listed:<\/p>\n
$ aplay -l\r\n**** List of PLAYBACK Hardware Devices ****\r\ncard 0: Intel [HDA Intel], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]\r\n Subdevices: 1\/1\r\n Subdevice #0: subdevice #0\r\ncard 0: Intel [HDA Intel], device 1: ALC662 rev1 Digital [ALC662 rev1 Digital]\r\n Subdevices: 1\/1\r\n Subdevice #0: subdevice #0\r\ncard 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0]\r\n Subdevices: 1\/1\r\n Subdevice #0: subdevice #0<\/pre>\nIt gives the following message at boot:<\/p>\n
$ dmesg | grep hdmi\r\n\r\nsnd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI\/DP codec\r\n<\/pre>\nThis is running the stock stretch kernel of 4.9.0 and it needs a more up to date kernel. So add<\/p>\n
deb http:\/\/ftp.debian.org\/debian stretch-backports main<\/pre>\nto<\/p>\n
\/etc\/apt\/sources.list<\/pre>\nThen do<\/p>\n
$ sudo apt-get update\r\n$ sudo apt-get -t stretch-backports upgrade\r\n<\/pre>\nto upgrade any dependencies<\/p>\n
Look for a suitable kernel:<\/p>\n
$ aptitude search linux-image<\/pre>\nand choose the one with the highest version number to install, eg<\/p>\n
$ sudo apt-get -t stretch-backports install linux-image-4.18.0-0.bpo.3-amd64<\/pre>\nThen reboot. This seems to change the card name from INTEL to PCH and the following now produces noise from the speakers via the HDMI cable<\/p>\n
$ speaker-test -D hdmi:CARD=PCH,DEV=1 -c 2<\/pre>\nThe warnings about missing firmware seem related to power management and harmless here.<\/p>\n","protected":false},"excerpt":{"rendered":"