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Old 12-02-2017, 10:15 AM   #1
cwinthrop
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Registered: Dec 2017
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Ubuntu Server 16.04 on Dell Latitude E6500 - Audio ONLY works when logged in!


A new day, a new install of Ubuntu 16.04 Server Edition on the laptop (Dell Latitude E6500), and a new problem. You're gonna love this one!

Sound works perfectly, as long as I'm logged in on tty1.

Literally, I log in through tty1 (console on the laptop), and then ssh from my desktop to the laptop, run flite -t "audio test", and the laptop says "Audio test," as expected.

BUT, if I log out of tty1, run flite -t "audio test" from ssh, and I get this:

Code:
    ALSA lib confmisc.c:768:(parse_card) cannot find card '0'
    ALSA lib conf.c:4292:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
    ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
    ALSA lib conf.c:4292:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
    ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
    ALSA lib conf.c:4292:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
    ALSA lib conf.c:4771:(snd_config_expand) Evaluate error: No such file or directory
    ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM default
    audio_open_alsa: failed to open audio device default. No such file or directory
And it's not just flite. NO audio through aplay, mplayer, etc. Same error until I log back into tty1, and then it plays perfectly again.

Since this laptop will eventually be mounted in a robot, logging into the local console would be extremely difficult, to say the least.

There's a slight difference if I run aplay -l while logged in vs while not logged in as well:

Code:
(Logged in) aplay --list-devices

    **** List of PLAYBACK Hardware Devices ****
    card 0: Intel [HDA Intel], device 0: 92HD71B7X Analog [92HD71B7X Analog]
      Subdevices: 1/1
      Subdevice #0: subdevice #0
    card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0]
      Subdevices: 1/1
      Subdevice #0: subdevice #0
Code:
(Logged out) aplay --list devices

    aplay: device_list:268: no soundcards found...
Additionally, this pops up in /var/log/syslog when I log out:

Code:
    Dec  2 08:18:32 timothy systemd[1]: getty@tty1.service: Service has no hold-off time, scheduling restart.
    Dec  2 08:18:32 timothy systemd[1]: Stopped Getty on tty1.
    Dec  2 08:18:32 timothy systemd[1]: Started Getty on tty1.
Dunno if it has anything to do with it, but it's there.

Running uname -r gives me: 4.4.0-87-generic

And lspci shows everything it should:

Code:
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:19.0 Ethernet controller: Intel Corporation 82567LM Gigabit Network Connection (rev 03)
00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)
00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 (rev 03)
00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller (rev 03)
00:1f.2 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
03:01.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba)
03:01.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 04)
03:01.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 21)
0c:00.0 Network controller: Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller (rev 01)
So what's causing this, and how do I fix it?
 
  


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