Happens the same <div class="gmail_quote">On 29 Mar 2016 5:01 p.m., "Ralf Mardorf" <<a href="mailto:ralf.mardorf@alice-dsl.net">ralf.mardorf@alice-dsl.net</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Tue, 29 Mar 2016 14:50:35 +0100, Joao Bruno wrote: >card 1: PCH [HDA Intel PCH], device 0: CX20756 Analog [CX20756 Analog] > Subdevices: 1/1 > Subdevice #0: subdevice #0 >**** List of CAPTURE Hardware Devices **** >card 1: PCH [HDA Intel PCH], device 0: CX20756 Analog [CX20756 Analog] > Subdevices: 1/1 > Subdevice #0: subdevice #0 Only this card could be used in duplex mode, the other card is playback only. Actually I don't understand "Cannot open PCM device alsa_pcm for playback", I would expect that no device for "capture", aka "record" aka "input" could be opened. I suspect that the HDMI devcie is part of the graphics and suffers from a broken driver. What qjackctl output do you get if you chose "hw:1"? -- ubuntu-studio-users mailing list <a href="mailto:ubuntu-studio-users@lists.ubuntu.com">ubuntu-studio-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users" rel="noreferrer" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users</a> </blockquote></div>