| === acerimmer is now known as enumerator | ||
| === enumerator is now known as acerimmer_ | ||
| rayui | hey guys - having a problem configuring jack i've not come across before. i am in audio group and have set up both /etc/security/limits.conf and /etc/security/limits.d/audio.conf to no avail | 20:00 |
|---|---|---|
| rayui | am on kernel 2.6.33-1-realtime | 20:00 |
| rayui | every time i launch it i get this error: "JACK is running in realtime mode, but you are not allowed to use realtime scheduling." | 20:01 |
| rayui | any ideas? | 20:01 |
| rayui | (also am on lucid 10.04) | 20:01 |
| Pablo | what is the output of "ulimit -r"? | 20:01 |
| rayui | 0 | 20:01 |
| rayui | hmmm | 20:02 |
| rayui | what does that mean? | 20:02 |
| Pablo | so you don't have realtime scheduling privilege | 20:02 |
| Pablo | to begin with, you shouldn't edit two files | 20:03 |
| rayui | well, initially i ran dpkg-reconfigure -p high jackd | 20:03 |
| Pablo | for these limits | 20:03 |
| rayui | what is your recommendation? | 20:04 |
| Pablo | I would delete the lines in /etc/security/limits.conf | 20:04 |
| rayui | done | 20:04 |
| Pablo | then /etc/security/limits.d/audio.conf | 20:04 |
| rayui | done | 20:04 |
| Pablo | can you show the lines there? | 20:04 |
| rayui | yes | 20:05 |
| rayui | @audio - rtprio 99 | 20:05 |
| rayui | @audio - memlock unlimited | 20:05 |
| rayui | @audio - nice -19 | 20:05 |
| Pablo | lately, jack recommends memlock 75% of your RAM, but this is a side note | 20:05 |
| rayui | okay, i can fix that if i can get jack running as a regular user | 20:06 |
| Pablo | are you in the audio group? | 20:06 |
| rayui | id | 20:06 |
| rayui | uid=1000(ray) gid=1000(ray) groups=4(adm),20(dialout),24(cdrom),29(audio),44(video),46(plugdev),104(fuse),105(lpadmin),112(netdev),119(admin),122(sambashare),1000(ray) | 20:06 |
| rayui | yep | 20:06 |
| Pablo | Restart the computer? | 20:06 |
| Pablo | It seems fine | 20:07 |
| rayui | that's what i thought | 20:07 |
| rayui | but still the same problem | 20:07 |
| rayui | i have followed lots of how-tos, same way as i did on jaunty | 20:07 |
| rayui | but nothing i do seems to have an effect | 20:07 |
| rayui | i will restart now and be back in a few minutes | 20:08 |
| rayui | thanks... c u in a mo | 20:08 |
| rayui | hi pablo. same result, i'm afraid | 20:12 |
| Pablo | weird | 20:12 |
| Pablo | what kernell are you running? | 20:12 |
| Pablo | oh yes you said | 20:13 |
| rayui | 2.6.33-1-realtime | 20:13 |
| Pablo | is it the same with other kernels? | 20:13 |
| rayui | i know jackd can run because i can run it as root | 20:14 |
| rayui | and that is fine | 20:14 |
| Pablo | The point is that the user can't gain those privileges and I don't know why | 20:15 |
| rayui | yes, exactly. i am sure this is a permissions issue | 20:15 |
| Pablo | http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/sag-pam_limits.html | 20:15 |
| Pablo | could it be that you don't have that pam_limits PAM module in your kernel? | 20:16 |
| rayui | possibly...! let me check | 20:17 |
| rayui | although that would be odd seeing as i am using the stock realtime kernel | 20:17 |
| Pablo | I didn't know ubuntu had a 2.6.33-rt kernel | 20:18 |
| Pablo | i am running karmic, anyway | 20:18 |
| rayui | mmm | 20:18 |
| rayui | weird. i can't find anything about PAM in the lucid kernel source | 20:19 |
| Pablo | This problem is beyond my knowledge | 20:20 |
| rayui | okay, thanks anyway mate | 20:20 |
| rayui | it is a very odd one | 20:20 |
| Pablo | you are welcome! | 20:20 |
| Pablo | locate pam_limits.so | 20:22 |
| rayui | /lib/security/pam_limits.so | 20:23 |
| Pablo | same as me | 20:23 |
| rayui | rrrrrr | 20:23 |
| Pablo | I don't have a clue, sorry | 20:23 |
| rayui | i wonder if it is for the right kernel | 20:23 |
| rayui | what was that ulimit command again? | 20:25 |
| Pablo | ulimit -r | 20:25 |
| rayui | ty | 20:25 |
| Pablo | ulimit -a shows all | 20:25 |
| Pablo | for jack, the important ones are ulimit-r and ulimit -l | 20:25 |
| rayui | ulimit -r still gives me 0 | 20:26 |
| Pablo | that is the issue | 20:26 |
| rayui | it is like it is ignoring the .conf file | 20:27 |
| Pablo | have you tried with another kernel? | 20:28 |
| rayui | yeah | 20:28 |
| Pablo | A generic one, even | 20:28 |
| rayui | not a generic one, no | 20:28 |
| rayui | may give that a shot | 20:28 |
| rayui | hey Pablo, i found out what's happening | 22:21 |
| rayui | and i have 'fixed' it | 22:21 |
| rayui | sort of | 22:21 |
| Pablo | cool | 22:22 |
| Pablo | what happoened? | 22:22 |
| rayui | i am using the slim login manager which does not support PAM | 22:22 |
| rayui | i accidentally logged in using gdm and found it worked. i knew it was a problem with pam, so i did a search and immediately found this: http://meandubuntu.wordpress.com/2008/09/06/xfce-slim-pam-and-jack/ | 22:23 |
| rayui | man, it was driving me crazy! | 22:23 |
| rayui | but now the solution is clear so... yay! | 22:23 |
| rayui | i never twigged what the problem was cause i installed slim about 3 weeks ago and haven't done any audio work since | 22:24 |
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