I have a small flat screen TV (Toshiba) that I often connect via HDMI to my laptop (an HP Pavilion dv4) and use as a computer monitor. When I do this, I prefer to use the TV's speakers, particularly when I'm watching video, because the sound quality is much better.
However, when I connect the HDMI cable after turning on my computer (rather than having it plugged in before booting up), Sound Settings does not list the TV as an output device, and I am forced to reboot.
I was curious if there is an easier solution to this, perhaps a CLI command to check for new sound outputs. Does anyone know of something like this or have another solution?
To clarify, I believe this is a software problem. The HDMI always works, and I can switch my desktop over to the TV at any time. The issue is that, if the HDMI wasn't connected during start up, the TV will not appear as an output option in the Sound Settings GUI. So, unless I'm mistaken, my question is not HDMI specific, but rather a general usage question about manipulating sound settings from the command line.
Output of 'cat /proc/asound/cards':
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xda500000 irq 48
Update:
Here's some of the outputs requested. Sorry for the delay.
Output of 'lsmod' (After booting up the computer, connecting the HDMI, and successfully setting the HDMI-connected screen as the sole monitor. However, HDMI is not listed as an option in the Sound Settings GUI):
Module Size Used by usbhid 47199 0 hid 99559 1 usbhid michael_mic 12612 0 arc4 12529 0 pci_stub 12622 1 vboxpci 23200 0 vboxnetadp 13382 0 vboxnetflt 23441 0 vboxdrv 287082 3 vboxpci,vboxnetadp,vboxnetflt bnep 18281 2 parport_pc 32866 0 rfcomm 47604 0 ppdev 17113 0 bluetooth 180104 10 bnep,rfcomm binfmt_misc 17540 1 snd_hda_codec_hdmi 32474 1 snd_hda_codec_idt 70795 1 snd_hda_intel 33773 3 snd_hda_codec 127706 3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel snd_hwdep 13668 1 snd_hda_codec snd_pcm 97188 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec snd_seq_midi 13324 0 snd_rawmidi 30748 1 snd_seq_midi i915 473298 2 snd_seq_midi_event 14899 1 snd_seq_midi snd_seq 61896 2 snd_seq_midi,snd_seq_midi_event snd_timer 29990 2 snd_pcm,snd_seq snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq lib80211_crypt_tkip 17390 0 ir_lirc_codec 12859 0 lirc_dev 19204 1 ir_lirc_codec wl 2568210 0 uvcvideo 72627 0 ir_mce_kbd_decoder 12777 0 snd 78855 16 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device ir_sony_decoder 12510 0 videodev 98259 1 uvcvideo soundcore 15091 1 snd ir_jvc_decoder 12507 0 psmouse 97443 0 ir_rc6_decoder 12507 0 joydev 17693 0 snd_page_alloc 18529 2 snd_hda_intel,snd_pcm lib80211 14381 2 lib80211_crypt_tkip,wl hp_wmi 18092 0 v4l2_compat_ioctl32 17128 1 videodev sparse_keymap 13890 1 hp_wmi serio_raw 13211 0 drm_kms_helper 46978 1 i915 hp_accel 25976 0 ir_rc5_decoder 12507 0 drm 241921 3 i915,drm_kms_helper jmb38x_ms 17646 0 i2c_algo_bit 13423 1 i915 wmi 19256 1 hp_wmi memstick 16569 1 jmb38x_ms lis3lv02d 19876 1 hp_accel ir_nec_decoder 12507 0 video 19596 1 i915 input_polldev 13896 1 lis3lv02d rc_rc6_mce 12502 0 coretemp 13525 0 ene_ir 18457 0 rc_core 26412 10 ir_lirc_codec,ir_mce_kbd_decoder,ir_sony_decoder,ir_jvc_decoder,ir_rc6_decoder,ir_rc5_decoder,ir_nec_decoder,rc_rc6_mce,ene_ir mac_hid 13253 0 lp 17799 0 parport 46562 3 parport_pc,ppdev,lp sdhci_pci 18826 0 sdhci 33205 1 sdhci_pci r8169 62099 0
Output of 'lsmod' (After only restarting the computer. HDMI Output is now appears in Sound Settings):
Module Size Used by pci_stub 12622 1 vboxpci 23200 0 vboxnetadp 13382 0 vboxnetflt 23441 0 vboxdrv 287082 3 vboxpci,vboxnetadp,vboxnetflt snd_hda_codec_hdmi 32474 1 snd_hda_codec_idt 70795 1 snd_hda_intel 33773 3 snd_hda_codec 127706 3 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel snd_hwdep 13668 1 snd_hda_codec rfcomm 47604 0 bnep 18281 2 snd_pcm 97188 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec bluetooth 180104 10 rfcomm,bnep parport_pc 32866 0 ppdev 17113 0 snd_seq_midi 13324 0 snd_rawmidi 30748 1 snd_seq_midi uvcvideo 72627 0 lib80211_crypt_tkip 17390 0 snd_seq_midi_event 14899 1 snd_seq_midi wl 2568210 0 videodev 98259 1 uvcvideo v4l2_compat_ioctl32 17128 1 videodev snd_seq 61896 2 snd_seq_midi,snd_seq_midi_event binfmt_misc 17540 1 snd_timer 29990 2 snd_pcm,snd_seq snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq joydev 17693 0 ir_lirc_codec 12859 0 lirc_dev 19204 1 ir_lirc_codec snd 78855 16 snd_hda_codec_hdmi,snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device ir_mce_kbd_decoder 12777 0 i915 473298 2 soundcore 15091 1 snd ir_sony_decoder 12510 0 snd_page_alloc 18529 2 snd_hda_intel,snd_pcm drm_kms_helper 46978 1 i915 lib80211 14381 2 lib80211_crypt_tkip,wl psmouse 97443 0 serio_raw 13211 0 hp_wmi 18092 0 ir_jvc_decoder 12507 0 drm 241921 3 i915,drm_kms_helper jmb38x_ms 17646 0 i2c_algo_bit 13423 1 i915 memstick 16569 1 jmb38x_ms sparse_keymap 13890 1 hp_wmi ir_rc6_decoder 12507 0 ir_rc5_decoder 12507 0 ir_nec_decoder 12507 0 wmi 19256 1 hp_wmi rc_rc6_mce 12502 0 ene_ir 18457 0 rc_core 26412 10 ir_lirc_codec,ir_mce_kbd_decoder,ir_sony_decoder,ir_jvc_decoder,ir_rc6_decoder,ir_rc5_decoder,ir_nec_decoder,rc_rc6_mce,ene_ir hp_accel 25976 0 lis3lv02d 19876 1 hp_accel video 19596 1 i915 input_polldev 13896 1 lis3lv02d coretemp 13525 0 mac_hid 13253 0 lp 17799 0 parport 46562 3 parport_pc,ppdev,lp usbhid 47199 0 hid 99559 1 usbhid r8169 62099 0 sdhci_pci 18826 0 sdhci 33205 1 sdhci_pci
cat /proc/asound/cardsto your question, that should let us know what kind of audio chipset it is. – Jorge Castro Sep 27 '12 at 21:30lsmodboth before and after rebooting the computer. Perhaps if you boot the computer with the HDMI plugged, the kernel loads a vital module – Severo Raz Sep 28 '12 at 03:27