On Thu, 15 Nov 2001, Wolfgang Hoffmann wrote:
> Am Dienstag, 13. November 2001 23:04 schrieb Wolfgang Hoffmann:
> > Am Mittwoch, 7. November 2001 22:33 schrieb Anders Torger:
> > > Hmmm... strange... I use the driver almost every day, and I have not seen
> > > any problems. I also wrote the driver, but it has been some time since I
> > > looked at it last, and I don't have an entirely fresh ALSA copy myself.
> > > Unfortunately I will not be able to look into this until next weekend.
> > > Perhaps some other user of the card could report on this?
> >
> > Or could it be that some other application lock the device? I'm running
> > nothing special, plain SuSE 7.3 with KDE. I took the dummy-library
> > libasound.so.1 from ftp.suse.com/pub/people/tiwai/alsa9-packages/ to
> > stop all alsa-0.5-apps from interfering. Am I missing something?
>
> Seems like aRts caused the trouble of busy devices. Sorry, I probably should
> have asked this on Alsa-users, not here. Sorry again.
>
> > Concerning problem 2b): Here the RME96-driver seems to make
> > troubles. Using the via-chipset, I can run "latency" fine. Using the
> > RME DIGI96, it eigther fails to open the device as described, or dumps
> > a segmentation fault. gdb gives:
> > Program received signal SIGSEGV, Segmentation fault.
>
> I found out the reason of the "latency"-segfault, but need some help.
> This definitely is Alsa-devel topic ;-)
>
> The RME96 driver seems to return fixed values for buffer size and period,
> no matter what one asks for:
> "latency" tries
> snd_pcm_hw_params_set_buffer_size_near(..., 64)
> which results in
> snd_pcm_hw_params_get_buffer_size(...) == 16384. wow!
> With that, it tries
> snd_pcm_hw_params_set_period_size_near(..., 8192), which returns 2048.
>
> The segfault is caused by snd_pcm_format_set_silence(S16_LE, buffer, 16384),
> which writes 32768 bytes the buffer malloced with 16384 bytes
> (maximum latency = 4096 * 4 bytes per frame). The bytes written beyond the
> buffer hit the areas where the pcm-handles point to, resulting in the
> seg-fault when trying to use the pcm.
>
> latency.c probably should handle this case more gracefully.
Yes, it's fixed in CVS now. Thanks for notice.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
SuSE Linux http://www.suse.com
ALSA project http://www.alsa-project.org
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