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Re: jackd trouble



On Tue, Feb 15, 2005 at 06:06:33PM -0600, Henry Hollenberg wrote:
> Looks better:
> 
> opie:/lib/modules/2.6.8_2.15.2005# modprobe snd-seq
> opie:/lib/modules/2.6.8_2.15.2005# lsmod
> Module                  Size  Used by
> snd_seq_midi            6560  0
> snd_seq_oss            30080  0
> snd_seq_midi_event      6016  2 snd_seq_midi,snd_seq_oss
> snd_seq                45968  5 snd_seq_midi,snd_seq_oss,snd_seq_midi_event
> radeon                123684  2
> pcmcia_core            51908  0
> af_packet              12552  2
> ide_scsi               13700  0
> sg                     32672  0
> scsi_mod               74560  2 ide_scsi,sg
> snd_intel8x0           29320  1
> snd_ac97_codec         64388  1 snd_intel8x0
> snd_pcm_oss            47656  0
> snd_mixer_oss          17152  2 snd_pcm_oss
> snd_pcm                79880  2 snd_intel8x0,snd_pcm_oss
> snd_timer              19716  2 snd_seq,snd_pcm
> snd_page_alloc          8968  2 snd_intel8x0,snd_pcm
> snd_mpu401_uart         5888  1 snd_intel8x0
> snd_rawmidi            19236  2 snd_seq_midi,snd_mpu401_uart
> snd_seq_device          6536  3 snd_seq_midi,snd_seq_oss,snd_rawmidi
> snd                    44772  13 
> snd_seq_midi,snd_seq_oss,snd_seq_midi_event,snd_seq,snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device
> soundcore               7008  2 snd
> hw_random               4500  0
> ehci_hcd               38020  0
> uhci_hcd               29068  0
> usbcore               109540  4 ehci_hcd,uhci_hcd
> intel_agp              19232  1
> joydev                  8000  0
> evdev                   7424  0
> nls_iso8859_1           3968  1
> nls_cp437               5632  1
> vfat                   11264  1
> fat                    38336  1 vfat
> unix                   21428  454
> 
> opie:/lib/modules/2.6.8_2.15.2005# cd /dev/snd
> opie:/dev/snd# ls
> controlC0  pcmC0D0c  pcmC0D0p  pcmC0D1c  pcmC0D2c  pcmC0D3c  pcmC0D4p  seq  
> timer

Fine. Add snd_seq to /etc/modules, so it gets loaded automatically
in the future.

> 
> $ jackd -d alsa
> 
> still gives me alot of
> **** alsa_pcm: xrun of at least 2.398 msecs
> **** alsa_pcm: xrun of at least 9.354 msecs
> **** alsa_pcm: xrun of at least 64.750 msecs
> **** alsa_pcm: xrun of at least 59.304 msecs
> **** alsa_pcm: xrun of at least 4.890 msecs
> 
Hm, jackd is losing synchronization - under 2.6, the X server should run
at nice 0, not in the negative range anymore... check
/etc/X11/Xwrapper.config
This has improved sound output (xmms) a lot on my system. Before, xmms
always skipped some frames when I scrolled between virtual screens.

But getting rid of jackd's xruns is a science on its own, and I'm not
very knowledgeable about that...

> $ rosegarden4
> 
> seemed to start up OK though....since I've never used it I don't know how 
> to test it for sound output!
> 
> and I can't seem to get my cdrom to play any music anymore to test sound 
> that way.
> The gnome-cd app just says "Drive Error".
> 
> It works fine when I boot with my 2.4.26 kernel...ide-scsi and such...
ide-scsi is deprecated in 2.6, and the CD drives should use the ide-cd
driver now (check your kernel config in the ATA/... section for IDE CD
support). Can you mount data CDs?

Jan

PS: My next response will take approx. 8 hours, I'm off to get some sleep
now.

-- 
Jan C. Nordholz
<jckn At gmx net>

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