[Expired for alsa-driver (Ubuntu) because there has been no activity for
60 days.]
** Changed in: alsa-driver (Ubuntu)
Status: Incomplete = Expired
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This is a further report on the behaviour of the sound system.
I did not experence any crackling today so am unable to report on its
occurrence.
I played a video using the Videos app and ontained good quality sound.
Plugging a pair of good quality headphones allowed me to listen for any
Having downloaded and installed todays latest kernel update v3.18.1, I
now find that the HDMI / Display Port menu items appears in the Sound
pane when the HDMI monitor is plugged into the Display Port. This was
after a cold start.
Since this was the start of this bud report and now appears to be
Sorry, still not fixed.
When plugging in a Sony TV set with HDMI, it is not recognised without
using VLC to kick start the recognition. Once recognised, removing the
Display Port plug and re-inserting it sometimes removes the HDMI menu
item and has it re-appear but not predictably so. Sometimes
I am attempting to eliminate possible poor electrical connections
associated with the headphone socket by starting up the laptop from cold
(literally having cooled down) and running a video to check the sound
quality.
Last evening, within 10 minutes of starting the laptop from cold, the
sound
Please note that with the headphones plugged it and the Speakers re-
selected, the Test Sound button brings up the panel labelled Speaker
Testing for Speakers. The test buttons produce sound in the headphones
and not the speakers. The plugging in of headphones therefore overrides
any output
Regrettably, my suggestion that this bug report be closed is premature.
On switching on the laptop from cold this morning, I found that there
was nothing listed in the Systems Settings Sound pane.
I chose to shut down and start up again. This time, I found the
Speakers, Built-in Audio listed
Here we go again!
Whislt playing a video through Videos with the sound playing over the
speakers, I turned on a pair of Bluetooth hadphones. Sure enough, the
headphones' menu item appeared in the Systems Settings Souund pane. I
needed to hightlight the item to get the sound through the
Note:
If, when playing a video through Videos, the monitor is unplugged, the
HDMI option disappears from the Play sound through listing.
When another HDMI device (such as a TV set with HDMI inputs) is plugged
into the Display Port, the HDMI option reappears in the Play sound
through listing.
1140.917186] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid,
remainder is 93
[ 1140.917195] Raw EDID:
[ 1140.917200] 00 ff ff ff ff ff ff 00 09 d1 a1 78 45 54 00 00
[ 1140.917203] 1c 18 01 03 80 30 1b 78 2e 35 85 a6 56 48 9a 24
[ 1140.917206] 12 50 54 a5 6b
When the output is directed to an external HDMI monitor and the lead
into the Display Port is unplugged, the HDMI option disappears from the
Sound Output menu leaving just the Speakers highlighted. However,
there is no sound from the Speakers until the highlighted menu item is
clicked with the
** Changed in: alsa-driver (Ubuntu)
Status: New = Incomplete
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https://bugs.launchpad.net/bugs/1402666
Title:
[XPS13 9333, Intel Haswell HDMI,
Just another observation:
I stopped the video playout through the TV set and unplugged the Display
Port.
I then did a Shut Down followed by a cold start. Having opened the System
Settings Sound pane, I plugged in the Display Port connector and,
miraculously, the HDMI option appeared in the
I can confirm that unplugging the Display Port when directing sound
through Digital Stereo (HDMI) does cause the Digital Stereo option to be
removed from the listing leaving the Speakers highlighted. The sound is
muted and the Speakers have to clicked to get the sound to play through
them. It
xrandr --verbose
the graphic driver query your hdmi tv 's edid and pass eld to audio
driver
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https://bugs.launchpad.net/bugs/1402666
Title:
[XPS13
Having done a few cold starts since I discovered the original bug, I
find that I am unable to reproduce the initial failure to connect as the
Sound pane lists the Digital Stereo (HDMI) option as soon as an HDMI
monitor is plugged into the Display Port. This allows the output to be
tested using the
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