Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
On Wed, 01 Nov 2006 19:29:18 -0700 Bob van der Poel [EMAIL PROTECTED] wrote: Clemens Ladisch wrote: Bob van der Poel wrote: I've just installed Mandriva 2007. It is using alsa 1.0.12 with my audiophile 2496 card. Oh, this is on linux kernel 2.6.17-5mdv. There appears to be a problem with midi output. A few times now my entire computer has locked while playing a midi file using aplaymidi. This looks like the RTC bug. Try adding the following line to /etc/modprobe.conf: options seq seq_default_timer_device=0 Worked for a few days ... just now it hung completely. Had to rePOWER the computer (RESET by itself didn't do the trick). [07:25 PM /proc/asound/seq] bob$ cat timer Timer for queue 0 : system timer Period time : 0.00400 Skew : 65536 / 65536 [07:27 PM /proc/asound] bob$ cat version Advanced Linux Sound Architecture Driver Version 1.0.12 (Mon Aug 28 13:46:17 UTC 2006). This is all on Mandriva 2007 ... and I'll tell the world that I'm not too impressed with this distro. I think I'll install SLED10.1 later this week. Same problems to be expected? I did install SUSE (not SLED, the free one) 10.1 on another computer, and I didn't much like it compared to Mandriva 2006. I did the experiment because I wanted to migrate from Mandriva in the first place. All in all I find Mepis 6.01 quite pleasing. But regarding your problem - better find very recent Live CDs and try with them. On the other hand, if something works for a few days and then just hangs - debugging such a thing is a project by itself, it could be anything, including faulty RAM, spike in power supply, CPU/chipset bug, whatever. --Sergei. -- Visit my http://appsfromscratch.berlios.de/ open source project. - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
Clemens Ladisch wrote: Bob van der Poel wrote: I've just installed Mandriva 2007. It is using alsa 1.0.12 with my audiophile 2496 card. Oh, this is on linux kernel 2.6.17-5mdv. There appears to be a problem with midi output. A few times now my entire computer has locked while playing a midi file using aplaymidi. This looks like the RTC bug. Try adding the following line to /etc/modprobe.conf: options seq seq_default_timer_device=0 Worked for a few days ... just now it hung completely. Had to rePOWER the computer (RESET by itself didn't do the trick). [07:25 PM /proc/asound/seq] bob$ cat timer Timer for queue 0 : system timer Period time : 0.00400 Skew : 65536 / 65536 [07:27 PM /proc/asound] bob$ cat version Advanced Linux Sound Architecture Driver Version 1.0.12 (Mon Aug 28 13:46:17 UTC 2006). This is all on Mandriva 2007 ... and I'll tell the world that I'm not too impressed with this distro. I think I'll install SLED10.1 later this week. Same problems to be expected? -- Bob van der Poel ** Wynndel, British Columbia, CANADA ** EMAIL: [EMAIL PROTECTED] WWW: http://www.mellowood.ca - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
At Fri, 27 Oct 2006 11:23:30 +0200,
Clemens Ladisch wrote:
Takashi Iwai wrote:
[...]
Yes, there is a known ABBA deadlock between rtc and snd-timer.
At least, we need to remove a spinlock in rtc.c.
- spin_lock_irqsave(rtc_task_lock, flags);
if (rtc_callback != task) {
- spin_unlock_irqrestore(rtc_task_lock, flags);
return -ENXIO;
}
- spin_unlock_irqrestore(rtc_task_lock, flags);
This lock is needed to protect rtc_callback against concurrent accesses
from other clients.
Well, this isn't useful for protecting from other clients.
rtc_control() is supposed to be called only from the client that
already registered. In other case, it's simply a bug, and should be
rather warned.
I've committed a patch that just moves the code out of the RTC callback
into a tasklet. Besides being 'proper' kernel programming technique,
this also works with earlier kernels.
This looks like a good solution. I'll check whether still deadlock
occurs.
thanks,
Takashi
-
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Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
Takashi Iwai wrote: The commit seems lacking Patch-level: ASAP although this fix is definitely to go to 2.6.19. Could you add it to linus tree via ssh mv, too? Could you submit it to stable kernel tree, too? Done. Regards, Clemens - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
Clemens Ladisch wrote: Bob van der Poel wrote: Clemens Ladisch wrote: options seq seq_default_timer_device=0 How can I confirm that the line has actually taken effect? Look into /proc/asound/timers when some MIDI is playing. bob$ cat timer Timer for queue 0 : RTC timer Period time : 0.000976562 Skew : 65536 / 65536 Is that right? -- Bob van der Poel ** Wynndel, British Columbia, CANADA ** EMAIL: [EMAIL PROTECTED] WWW: http://www.mellowood.ca - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
Bob van der Poel wrote: Clemens Ladisch wrote: Bob van der Poel wrote: How can I confirm that the line has actually taken effect? Look into /proc/asound/timers when some MIDI is playing. Timer for queue 0 : RTC timer This says that the RTC timer is still used. Regards, Clemens - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
Bob van der Poel wrote: options seq seq_default_timer_device=0 Oops, I tould you the wrong module name. This should be: options snd-seq seq_default_timer_device=0 HTH Clemens - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
Bob van der Poel wrote: I've just installed Mandriva 2007. It is using alsa 1.0.12 with my audiophile 2496 card. Oh, this is on linux kernel 2.6.17-5mdv. There appears to be a problem with midi output. A few times now my entire computer has locked while playing a midi file using aplaymidi. This looks like the RTC bug. Try adding the following line to /etc/modprobe.conf: options seq seq_default_timer_device=0 HTH Clemens - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
At Thu, 26 Oct 2006 09:18:13 +0200,
Clemens Ladisch wrote:
Bob van der Poel wrote:
I've just installed Mandriva 2007. It is using alsa 1.0.12 with my
audiophile 2496 card. Oh, this is on linux kernel 2.6.17-5mdv.
There appears to be a problem with midi output. A few times now my
entire computer has locked while playing a midi file using aplaymidi.
This looks like the RTC bug.
Yes, there is a known ABBA deadlock between rtc and snd-timer.
At least, we need to remove a spinlock in rtc.c. The patch below
should fix, but it seems not enough to clean up all problems.
Unfortunately, I've had little time to investigate it yet.
Takashi
diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index ab6429b..46d2896 100644
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -869,15 +869,10 @@ int rtc_control(rtc_task_t *task, unsign
#ifndef RTC_IRQ
return -EIO;
#else
- unsigned long flags;
if (cmd != RTC_PIE_ON cmd != RTC_PIE_OFF cmd != RTC_IRQP_SET)
return -EINVAL;
- spin_lock_irqsave(rtc_task_lock, flags);
- if (rtc_callback != task) {
- spin_unlock_irqrestore(rtc_task_lock, flags);
+ if (rtc_callback != task)
return -ENXIO;
- }
- spin_unlock_irqrestore(rtc_task_lock, flags);
return rtc_do_ioctl(cmd, arg, 1);
#endif
}
-
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Re: [Alsa-user] Midi issue with 1.0.12 and ice1712
Clemens Ladisch wrote: Bob van der Poel wrote: I've just installed Mandriva 2007. It is using alsa 1.0.12 with my audiophile 2496 card. Oh, this is on linux kernel 2.6.17-5mdv. There appears to be a problem with midi output. A few times now my entire computer has locked while playing a midi file using aplaymidi. This looks like the RTC bug. Try adding the following line to /etc/modprobe.conf: options seq seq_default_timer_device=0 Thanks for the suggestion. I have added the line and restarted alsa. I'll try to play some more midi's later and see what happens. Funny, last night after sending the message I played about an hour's worth of midi and no problems at all (this is before adding the line). How can I confirm that the line has actually taken effect? I see no differences in the /proc/asound files I checked. Thanks. -- Bob van der Poel ** Wynndel, British Columbia, CANADA ** EMAIL: [EMAIL PROTECTED] WWW: http://www.mellowood.ca - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
