lost sound after kernel update

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1

Posted this in hardware today but maybe this is the better forum?

I’m using KDE 4.14.9. 64 bit SuSE 13.2.

I did a kernel update today (October 25). It took a ridiculously long time to complete, and upon reboot I found that I had no sound from any sound file using any media player, or from any internet site. However, I do get the test sound (the few bars of what sounds like symphonic music) when I go into Yast.

I am completely stumped. I’ve tried re-rebooting just in case but that did not help.

What information can I supply to help you gurus find the source of my sound problem?

Thanks.
bosdad

2

Check the volume control it rare case it is known to sometimes be set to 0 volume after some updates. Try a different user it may be some bad config files in your home

3

It was the kernel update. Rolling back to previous version restored the audio. Now the question is when can I trust that the kernel update will be solid and not screw me up again?
bosdad

4
  1. I know of one safety critical application where the responsible people froze everything once the test, certification and acceptance testing was completed – they placed copies on a large number of laptops and sealed the things individually in plastic bags which were then placed in physically separated archive locations.
  2. There are reports today that, the failed European/Russian Mars landing failed because of a software failure.

[HR][/HR]Bottom line: human beings produce errors [write non-error-free software code]; only the Robots are perfect and error-free . . .

5

Dear all,

I had the same problem. Thanks for advice of rolling back kernel update!

Regards

6

Hi
Do you know why the kernel was updated?

I’m sure it will be solid as once you look at creating a bug about the issue…

http://en.opensuse.org/openSUSE:Submitting_bug_reports

7

There already is a bug report that sounds similar:
http://bugzilla.opensuse.org/show_bug.cgi?id=1006983

Apparently the user doesn’t get the necessary permissions to access the sound card on login for some reason.
Adding your user to the “audio” group should be a workaround in that case.

PS: I did install that kernel update myself today, but I haven’t rebooted yet so cannot tell at the moment if that’s a general problem or not.

8

Same problem with sound after the kernel update with me. I additionally have the problem that external USB storage refuses to mount with the updated kernel. Neither problem occurs if I boot into the old pre-update kernel so I’m doing that until a further update puts things right.

9

Yes, ony of the patches is buggy and breaks setting ACLs (access control lists) on the files, so the user cannot get access.

The problem has been identified and a fixed kernel is available for testing.
See 1007035 – POSIX ACL support broken by kernel-desktop-3.16.7-45

I suppose a fixed update will be released in the next days then.

10

Confirming the problem, I have now the same problem on my five computers, all running opensuse 13.2; 3 with 32 bits and 2 with 64 bits architecture. After kernel update to version 3.16.7.45, no sound at all to “users” members. Logging in with root, the sound works, but it seems to be working via “alsa” instead “pulseaudio” as I could infer from kmix showed controls.

I could “solve” the problem, as indicated by other member, putting the user I wish sound working into “audio” group [Yast - Users and group Management, editing user properties]. Reboot is necessary.

Also confirming, the update process was extremely slow. Zypper was unable to make it. I used yast online update.

Here my new “uname -a”, showing the problematic kernel.
Linux harpia 3.16.7-45-desktop #1 SMP PREEMPT Fri Oct 21 12:20:02 UTC 2016 (f3e3fc4) x86_64 x86_64 x86_64 GNU/Linux

Waiting for solution…

Thanks!

11

That’s completely unrelated though.

The download server was heavily overloaded today, because something broke and the latest Tumbleweed snapshot was published before it was synced out to any mirror, slowing down updates and repo refresh for everybody.
See http://lists.opensuse.org/opensuse-factory/2016-10/msg00606.html

12

Not only sound, all peripherals without access permissions for “users”.

Confirming too, not only sound has stopped working. Access to “radio0”, “video0” (tv card) and “video1” (camera) devices also denied… The problem is “systemic”.

Anônimo Oculto. BH MG BR.

13

Try adding user to video group or boot using previous kernel in advanced option no boot menu

14

Or, even better, download and install the fixed kernel mentioned in the bug report and report whether it works for you too.

15

Thanks for that! I also lost sound but the roll back of the kernel worked for me as well.

16

The new kernel is in the update repo meanwhile though, so just update and it should work too.

17

I can confirm the new 3.16.7-48-desktop kernel works for me wrt sound and USB device automount.

18

I was hit by a couple of KDE4 Plasma issues due to the root cause of the “no sound” issue: “POSIX ACL support broken by kernel-desktop-3.16.7-45”:

  • The KDE4 Plasma desktop lost it’s appearance settings.
  • The “KDE Wallet Manager” lost it’s database.
  • KDE “Kontact” lost some of it’s “KMail” settings.

[HR][/HR]A little bit embarrassing because, although I have archives of my e-Mails – which were, in any case, all intact as far as I can see – but, I didn’t have a recent export of my KWallet database – had to recreate it . . .
[HR][/HR]I’ve also had a few issues with deleting the “bad” 3.16.7-45 kernel version – can only suggest that, one doesn’t search for “kernel” in YaST – one should follow these instructions: <https://doc.opensuse.org/documentation/leap/reference/html/book.opensuse.reference/cha.tuning.multikernel.html#cha.tuning.multikernel.yast>.

  • Software -->> Software Management

  • View -->> Package Groups -->> Multiversion Packages