Comment 4 for bug 1006898

Hi,
Thanks to your work. It is very bad to do not have sound in this version of Ubuntu (kernel 3 2 025 and version 12.10 (Quanta). This problem comes with tha updating 3 2 024 to 3 2 025. 3 2 025 seems to forget the alsa.

For memory :
Matching subscriptions: No Audio after update kernel 3 2 025 in Ubuntu 12 04 32bits. Good in kernel 3 2 024 ! Alsa 1 025 not compiled in kernel 3 2 025. It's the same problem with ubuntu 12 10 alpha I tried today too !(but kernel 3 4 ...). A+
> https://bugs.launchpad.net/bugs/1006898

an info too :
dans la console cette ligne :
« cat /proc/asound/version »
Si cela te donne un truc de ce genre, alors le problème vient d'ailleurs :
Advanced Linux Sound Architecture Driver Version 1.0.25.
Compiled on Mar 9 2012 for kernel 3 2 025-generic PAE
Si la ligne ne e renvoie que la ligne :
Advanced Linux Sound Architecture Driver Version 1.0.24.
Alors pas besoin de cherche midi à 14 heures, ton son ne pourra fonctionné vu qu'Alsa n'est pas compilé avec le kernel que tu utilise à ce moment là.

Sorry, it's in french but i have only "Advanced Linux Sound Architecture Driver Version 1.0.24." when I tap " cat /proc/asound/version". And the sound driver installed is Version 1.0.25 !

Best regards.

Guy Roche

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> Message du 15/06/12 17:22
> de : "ThierryCarrez"<email address hidden>
> à : <email address hidden>
> cc :
> objet : [Bug 1006898] Re: [SRU] dnsmasq fails at leasing issues when using vlan mode
>
>
> 2.62 is in Quantal
>
> ** Changed in: dnsmasq (Ubuntu)
> Status: Triaged => Fix Released
>
> --
> You received this bug notification because you are subscribed to Ubuntu
> ubuntu-12.04.1.
> Matching subscriptions: No Audio after update kernel 3 2 025 in Ubuntu 12 04 32bits. Good in kernel 3 2 024 ! Alsa 1 025 not compiled in kernel 3 2 025. It's the same problem with ubuntu 12 10 alpha I tried today too !(but kernel 3 4 ...). A+
> https://bugs.launchpad.net/bugs/1006898
>
> Title:
> [SRU] dnsmasq fails at leasing issues when using vlan mode
>
> Status in “dnsmasq” package in Ubuntu:
> Fix Released
> Status in “dnsmasq” source package in Precise:
> Triaged
>
> Bug description:
> There is an issue with the way nova uses dnsmasq in VLAN mode. It starts
> up a single copy of dnsmasq for each vlan on the network host (or on
> every host in multi_host mode). The problem is in the way that dnsmasq
> binds to an ip address and port[2]. Both copies can respond to broadcast
> packet, but unicast packets can only be answered by one of the copies.
>
> In nova this means that guests from only one project will get responses
> to their unicast dhcp renew requests. Unicast projects from guests in
> other projects get ignored. What happens next is different depending on
> the guest os. Linux generally will send a broadcast packet out after
> the unicast fails, and so the only effect is a small (tens of ms) hiccup
> while interface is reconfigured. It can be much worse than that,
> however. I have seen cases where Windows just gives up and ends up with
> a non-configured interface.
>
> This bug was first noticed by some users of openstack who rolled their
> own fix. Basically, on linux, if you set the SO_BINDTODEVICE socket
> option, it will allow different daemons to share the port and respond to
> unicast packets, as long as they listen on different interfaces. I
> managed to communicate with Simon Kelley, the maintainer of dnsmasq and
> he has integrated a fix[3] for the issue in the current version[1] of
> dnsmaq.
>
> [3]
> http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=9380ba70d67db6b69f817d8e318de5ba1e990b12
>
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>