RT_GROUP_SCHED kernel option makes JACK unusable in Ubuntu Natty

[David Henningsson]

On 2010-12-14 12:57, Ronan Jouchet wrote:
> On 10-12-14 04:31 AM, David Henningsson wrote:
>> On 2010-12-14 05:34, Ronan Jouchet wrote:
>>> Hi Ubuntustudio-devel, Ubuntu-kernel, JACK-devel, Alessio,
>>>
>>> After talking with adi in #ffado and las in #jack, it appears that
>>> Natty's kernel needs adjustment to be usable for audio work. Currently
>>> the kernel flavors shipped by Ubuntu have the RT_GROUP_SCHED option
>>> activated, which makes JACK unusable (las put up
>>> http://jackaudio.org/linux_group_sched to sum up the situation).
>>>
>>> *Until this problem is solved, JACK is unusable under Natty*.
>>
>> So is rtkit, see http://pastebin.ubuntu.com/543481/
>>
>> This affects pulseaudio, but I wouldn't say it's unusable, just more
>> likely to have crackling audio on some machines.
>
>
> Hi David,
>
> Well it causes JACK to refuse to start ("Operation not permitted", see
> http://pastebin.com/xzvZxfkV ), so I maintain the term "unusable".

Yes, what I meant was that *pulseaudio* is still usable.

-- 
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic