Exactly same problem of post #7, Lubuntu 14.04 kernel 4.2.0-36-generic, on HP
Netbook HP2133.
no sound from speakers, light sound from headphones.
>From live CD (USB installer 14.04) no sound.
Speakers worked perfectly on old 10.04.
Perfect on dual-booted WinXp (sorry!)
Will try Mint.
Any
I can confirm a similar behavior as described in post #7.
1. I installed Ubuntu Studio 15.04 on the harddisk and there was no way to get
sound from speakers.
2. I started Ubuntu Studio 12.04.5 from a USB stick with persistence and did
all updates.
3. With 12.04.5 initial system and also after
I' ve a problem.
If I start Lubuntu 14:04, with main power supply, normal sound from the
headphones and no sound from speakers.
Everything is enabled both on alsamixer and pavucontro.
I turn off the laptop and boot from a USB key with Live VectorLinux.
Perfect sound from the speakers
I turn off
** Bug watch added: Linux Kernel Bug Tracker #94021
http://bugzilla.kernel.org/show_bug.cgi?id=94021
** Also affects: alsa-driver via
http://bugzilla.kernel.org/show_bug.cgi?id=94021
Importance: Unknown
Status: Unknown
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Problem seems to persist, Kubuntu 14.10, kernel 3.16.0-24...
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https://bugs.launchpad.net/bugs/1265611
Title:
No sound with HDA Intel, VIA VT8237A/VT8251, kernel 3.12
To manage
xubuntu 12.04 , kernel 3.13, i have no sound with this sound chipset
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Title:
No sound with HDA Intel, VIA VT8237A/VT8251, kernel 3.12
To manage
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: alsa-driver (Ubuntu)
Status: New = Confirmed
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Title:
you have to file a bug report upstream
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Title:
No sound with HDA Intel, VIA VT8237A/VT8251, kernel 3.12
To manage notifications about this bug
yes, I think its regression between the two kernels, but I am not sure
if this is the root cause.
will try some LiveCDs, but this will take some time.
regards hr
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https://bugzilla.kernel.org/enter_bug.cgi?product=Drivers
do you mean regression ?
there are numerous changes between 3.2.0-56 and 3.12.0-7
try some LiveCD or git bisect
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