So this is not guaranteed to work, but worth exploring. Give the following a shot: $ sudo alsa force-reload
But if that does not work. Try running: $ sudo apt-get update $ sudo apt-get install --fix-missing $ sudo alsa force-reload $ sudo reboot I've seen mention of this multiple times, but always for Ubuntu it seems. So maybe it'll cure your problems, maybe it won't. On Mon, Jan 2, 2017 at 3:24 PM, William Hermans <yyrk...@gmail.com> wrote: > Ok, my bad, I completely missed the part where you said it still output, > just no sound from speakers . . . > > Well then, that will be problematic to troubleshoot. > > With that said, which kernel version are you running ? Ok, 4.4.30-ti-r64 > > Have you tried different kernels ? newer, and older. > > On Mon, Jan 2, 2017 at 3:04 PM, William Hermans <yyrk...@gmail.com> wrote: > >> More to the point. Try running the command I gave above *AFTER* the audio >> already stops. That'll at least tell you where, and why it fails. After >> that you can investigate these reason why. Perhaps providing a fruitful >> google search, or at minimum giving you something to report. >> >> On Mon, Jan 2, 2017 at 2:57 PM, William Hermans <yyrk...@gmail.com> >> wrote: >> >>> $ strace -o /path/file speaker-test >>> >>> >>> It'll at least tell you where it stops, and most likely why. >>> >>> On Mon, Jan 2, 2017 at 2:54 PM, John Franey <jjfra...@gmail.com> wrote: >>> >>>> William, >>>> >>>> Thanks. >>>> >>>> If your suggestion is that the speaker-test program itself is silencing >>>> the hdmi output with some driver call....I'm really doubtful. I hope you >>>> don't mind me saying so. For a couple of reasons, but mainly: The audio >>>> stops 10 minutes after boot time even if there is no audio process running >>>> at the time. For example, I can run speaker-test before 10min mark to >>>> prove audio comes out right after boot. Then turn off speaker-test before >>>> the 10min mark, and run it after. There is no audio. >>>> >>>> Do I understand you correctly? That is, strace speaker-test? >>>> >>>> ...or maybe I should strace another process that maybe disabling >>>> sound. Guessing which one is the root question anyway. >>>> >>>> >>>> John >>>> >>>> >>>> On Monday, January 2, 2017 at 3:05:14 PM UTC-5, William Hermans wrote: >>>>> >>>>> >>>>> >>>>> On Mon, Jan 2, 2017 at 12:28 PM, John Franey <jjfr...@gmail.com> >>>>> wrote: >>>>> >>>>>> What do you think strace would show? >>>>>> >>>>>> I used strace a long time ago. Back then, it traced the system calls >>>>>> of an application process. What should I look for in that output? >>>>>> >>>>>> Thanks, >>>>>> John >>>>>> >>>>> >>>>> Ok so then you know what strace is then I suppose. In your case, I >>>>> would *imagine* strace would make things really easy to understand what is >>>>> happening at that 10 minute mark. Since in your shoes, I'd run everything >>>>> normally, but through strace. There is very likely going to be a lot of >>>>> output. So you'd want to output that to a file, using the -o option( dash >>>>> oh, as in Oscar ). Passed that I then( I would think ) becomes a matter of >>>>> reading the file in reverse, until you find a potential culprit. That is: >>>>> start of the end of the output file reading towards the beginning. >>>>> >>>>> Quite honestly, I have no idea what you should be looking for, But I >>>>> suspect you'll know it when you see it. But if you do not, You could paste >>>>> the last 10 lines of output here, or so. Then see if any one else here can >>>>> spot a potential problem. I think that it could be very likely you will >>>>> not >>>>> see an exact cause, but instead see something that should give a very good >>>>> indication as to what the problem is. >>>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "BeagleBoard" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to beagleboard+unsubscr...@googlegroups.com. >>>> To view this discussion on the web visit https://groups.google.com/d/ms >>>> gid/beagleboard/49e4bbaa-0b7d-4e52-8b75-09f402c7db9d%40googlegroups.com >>>> <https://groups.google.com/d/msgid/beagleboard/49e4bbaa-0b7d-4e52-8b75-09f402c7db9d%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORrN0V6i9%2BH2LwAuuJ%2BUR-UAgmAXD5ryLctcw%3DF1s78Knw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
