[linux-audio-user] Advice on FC5

[Tim Howard]

Lee Revell wrote:
>On Fri, 2006-04-21 at 16:44 +0100, James McDermott wrote:
>> Yes, latency is still a big issue regardless of how many tracks are
>> involved. You need to search the (recent) archives of this list, and
>> the FC5 docs, for set_rtlimits, PAM, and the kernel version number.
>> You can get good low latency performance with a recent mainstream
>> kernel, they say!
>>
>> Also, you'll have to do some reading to see what packages will be
>> available to you, and what you'll have to compile yourself.
>
>set_rtlimits should be completely unnecessary on FC5 as it has a new
>enough version of PAM.

OK, last night I did a test install of FC5 as an upgrade to my
FC3+planet installation.
If I log in as root, Jack is in realtime mode, and can't overload my
system enough to cause even one xrun.  But when I am logged in as a
normal user, Jack doesn't run in realtime mode, and I get xruns even
on playback.

Is this caused by something PAM related?  (Forgive me, I am a relative newbie)