On Du, 03 mai 20, 17:51:06, Andrei POPESCU wrote: > On Du, 03 mai 20, 17:38:59, Ken Heard wrote: > > > > The next series of tests involves connecting the two HDMI cables I have > > between the laptop and the monitor. Both have standard size plugs at each > > end. On is a cheap 3 metre one; the other is 5 metres long and of a higher > > quality. For these tests each cable was plugged successively to both jacks > > in the monitor, and both cables were tried in each direction between the > > laptop and the monitor. > > > > I first disconnected the amplifier from the monitor and listened on the buds > > plugged into the monitor 3.5 mm headphones jack. I repeated these tests > > with the amplifier connected by a fibre optic cable to the monitor. > > > > The result for all the tests described in the last two paragraphs was the > > same. In every case there was sound from only one channel. (I also made > > sure that each speaker could work if plugged into the right speaker jacks. > > They both did.) > > The digital audio signal via HDMI is "combined" with the video signal. > In order to separate it (e.g. to feed an amplifier directly) one needs > special signal "splitter" devices. > > Because of this I believe it is highly unlikely for the problem to be > connection related (unlike analog connections). > > You should probably carefully check all possible sound settings on both > the laptop and the monitor.
Forgot you already checked that with another device. The rest still stands (my money is on software configuration issue). > At least for the laptop the HDMI (digital) output is different than the > headset (analog) output. Could be similar also for the monitor. > > On the laptop you have to check both alsa and pulseaudio (if used) > settings. > > Do make sure you test with the same sound playing program to eliminate > another possible source of issues (music players usually have their own > volume/panning controls). > > Another possible method to eliminate software configuration issues would > be to boot from a live image. Kind regards, Andrei -- http://wiki.debian.org/FAQsFromDebianUser
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