Hi Daniel,
After the last reinstalling my laptop one last time, I cannot reproduce the issue anymore. Kernel 3.2.16 from Ubuntu compile with the Alsa drivers from GIT and Kernel 3.4 RC7. I have been playing music all day today without any issues.
The 3 big differences I have compared to my previous install are: - I used to have the RT_GROUP_SCHED option deactivated in my kernel to be able to run jack with runtime. I don't seem to need it now in Ubuntu 12.04. - I used to install the Ubuntu Proposed Updates (those are untested packages), I didn't this time for sake of stability. - I used to use the kernel .config file from the Ubuntu LowLatency kernel as my base. This time I used the .config of the generic kernel.
To be honest, now that my pc is working, I wouldn't change a thing :) But if you would like me to test the 3 points above and to try and find what the problem was in the first place, let me know,
Regards, Aurélien
On Thu, May 31, 2012 at 9:32 PM, Aurélien Leblond blablack@gmail.com wrote:
Hello Daniel,
As I told you in my previous mail, after few hours of frustration and testing, I decided to do a fresh install of Ubuntu 12.04 64bit.
After reinstalling Ubuntu, my first step was to compile Takashi's kernel. And it worked! I could play a song on the FTU, run Jackd, etc.
Unfortunately, after re-installing all my music software and updating Ubuntu, I'm now back to the scenarios I presented to you previously...
What I will do now is:
- Keep the .deb of the different kernel I compiled.
- Re-install once again my laptop.
- Not do any update nor install anything but the kernels
- Do my testings.
If this works, I guess we can conclude that something in Ubuntu is messing with the sound-usb modules.
I'll keep you updated.
If you have any updates, let me know,
Aurélien
On Sat, May 26, 2012 at 5:48 PM, Aurélien Leblond blablack@gmail.com wrote:
Hi Daniel,
I have tried to do a bit more thorough testing, find the details below. Hope this helps!
blablack@igorito:~$ aplay 10\ -\ Track\ 10-L.wav ALSA lib confmisc.c:768:(parse_card) cannot find card '0' ALSA lib conf.c:4241:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings ALSA lib conf.c:4241:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name ALSA lib conf.c:4241:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory ALSA lib conf.c:4720:(snd_config_expand) Evaluate error: No such file or directory ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM default aplay: main:682: audio open error: No such file or directory
What does "aplay -l" show? Also, what does it show on the older Ubuntu kernel? Is there any difference?
That is just me being an idiot. Ubuntu never mounts a USB sound card on the first slot. Compiling with the original Alsa coming from Ubuntu, I get the same error.
No sound... I tried to reboot several times, unplug/replug, checked alsamixer: all look fine to me but still no sound. Actually, it is not "exactly" no sound: I can see the 4 front leds flash very quickly, and I can hear a click in the speakers (with the FX, the click is longer due to the reverb, handy to notice it!).
The 4 front LEDs on the FTU signal input level activity, not output. Is there anything connected to those inputs?
There are stuff plugged on the 3 first inputs (2 for my guitar, 1 for my mic), bit they are all turned off during testing. This click and the 4 leds flash is very similar to the one you have when the FTU is plugged in to the USB port after being turned on. Somehow, when I want to play something, it makes the 4 leds flash + a click/crackle in the speakers.
IN BOTH CASES, FTU AND UA-25EX
Starting jack result in an immediate freeze of the system.
I really fail to see any of these issues on my system. I tried with both jackd and jackd2 and set them to real time priorities and chose 64 bytes sample frames in PureData. All good, no lockups. Can you describe your jackd setup? How do you start it?
jackd -dalsa -dhw:1 -r48000 -p256 -n3 -Xseq
Normal Ubuntu Kernel: - Compiled with low latency settings - 3.2.18 - Original Alsa
* FTU - mplayer: OK - jack: OK
* UA-25Ex - mplayer: OK - jack: OK
Ubuntu Kernel + Alsa Git: - Compiled with low latency settings - 3.2.18 - Alsa from git alsa-kmirror and alsa-driver - git alsa-kmirror and alsa-driver fetched today (25th May)
* FTU - mplayer: plays but no sound - jack: freezes the whole system
* UA-25Ex - mplayer: Ok - jack: freezes the whole system
"Pig" Kernel: - Original Ubuntu Kernel - 3.2.18 - Compiled with low latency settings - sound/usb directory from Kernel replaced by sound/usb directory from Takashi's Kernel - thus the name of this setup, "Pig" :) :)
* FTU - mplayer: I get click + 4 led flash, and then just got half a second of the song before it goes mute. Unplug/Replug, same results (except the sound goes mute after 5/10 sec, tried several times, I couldn't to 15 seconds). Mplayer keeps reading, but there is no sound. - jack: Works ok, but I have no sound! (was after unplug/replug)
* UA-25Ex - mplayer: OK - jack: freezes the whole system
Takashi's Kernel: - Compiled with low latency settings - 3.4.0 - Alsa from Takashi's kernel - Fetched today (26th May)
* FTU - mplayer: I get click + 4 led flash, and then just got half a second of the song before it goes mute. Unplug/Replug, same results (except the sound goes mute after 5/10 sec, tried several times, I couldn't to 15 seconds). Mplayer keeps reading, but there is no sound. - jack: Works ok, but I have no sound! (was after unplug/replug)
* UA-25Ex - mplayer: OK - jack: OK
I hope this will help you find out where the problem is. At least for now I can use the 3.4.0 kernel with the UA-25Ex
Let me know if I can provide you with any more details.
Regards, Aurélien