On Thu, 2005-07-28 at 08:07 +0200, Cesare Marilungo wrote: > I solved the problem *cough* disabling the ethernet card. Don't know why > it worked randomly yesterday. I can confirm this problem/solution. UA25 glitchy as heck till eth0 is disabled. I have a dell inspiron 5100 running gentoo btw. Makes icecast streaming jackd a bit tough, but at least it works. > It works even with the nvidia accelerated driver. And no more glitches > with -p64 -n4. > > 5.8ms of total latency with a USB card is better than my old Egosys 2496 > (pci) which made Cubase on XP unstable with a buffer less than 512. > > Interestingly, the nrpacks parameter of the snd_usb_audio module is set > to 4 (instead of 1 as people suggested on the net). > > Thank you, anyway. > > c. > > Cesare Marilungo wrote: > >Ubuntu had 2.6.10 something with realtime-lsm module. > > > >On Suse I haven't recompiled the kernel. Just the realtime module, with > >the patched kernel. > > > >It's the one shipped with Suse 9.3 (2.6.11.4-21.7-default). > > > >I forgot to mention that before than that I also tried with a custom > >compiled vanilla 2.4.11.7 with rt-lsm and realtime-preempt patches and > >got loads of xruns. > > > >Anyway yesterday I pushed jack settings way to 5ms latency (p128 -n3 > >with 24bits, 44.100k, 2 ins, 2 outs). > >Is it possible to achieve such low latency for USB 1.1 card? > > > >I doubt I had two instances of jack running, changed settings on the > >frontmost qjackctl, and listened to the output from the first instance. > >I disconnected and reconnected Muse and Zyn various times to change the > >buffer size. And I also noticed the degradation of sound when pushing > >jack settings so too far. > > > >I haven't had any xrun. Even when connecting apps. > > > >c. > > > >Lee Revell wrote: > > > >>On Thu, 2005-07-28 at 01:18 +0200, Cesare Marilungo wrote: > >> > >> > >>>Hi, > >>>I'm going crazy!!! > >>> > >>>Last night, after some months playing with Ubuntu, I installed SUSE 9.3 > >>>on my amd64 with an Edirol UA-25. I installed the kernel source, patched > >>>it with rt-lsm.patch, built the modules, installed ect. > >>>Added: > >>> > >>> > >>Were the kernel versions different between the two systems? > >> > >>USB audio is known to have some problems with older 2.6 kernels. > >> > >>Lee > >> > >> > >> > >> > >> > > > > > > > > >
