HDMI output used to work fine on my Samsung NP300E5C laptop in Ubuntu 12.04. However, I did a reinstall with the new 13.04 release (64 bit), and now I don't see the HDMI output as a choice in the Sound Settings.
aplay -l command returns the following:
**** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC269VC Analog [ALC269VC Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0
This means that the device is found, but can't be used, as can be seen when I input
speaker-test -c 2 -r 48000 -D hw:0,3:
speaker-test 1.0.25 Playback device is hw:0,3 Stream parameters are 48000Hz, S16_LE, 2 channels Using 16 octaves of pink noise Playback open error: -19,No such device
alsamixer doesn't show sliders related to the HDMI output. What do?