A NOTE has been added to this issue. ====================================================================== <https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1869> ====================================================================== Reported By: bitmage2 Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 1869 Category: CORE - pcm Reproducibility: always Severity: minor Priority: normal Status: new Distribution: SuSE Linux 10.0 Kernel Version: Linux 2.6.13-15.8-default #1 Tue Feb 7 11:07:24 UTC 2006 i686 athlon i386 GNU/Linux ====================================================================== Date Submitted: 02-23-2006 00:48 CET Last Modified: 08-01-2006 10:46 CEST ====================================================================== Summary: Playing surround sound produces 100% CPU load Description: I am using the CS46xx with a Hercules Gametheater XP 5.1 . It plays back stereo without problems. I wanted to use the rest of my 5.1 speaker set, so for a test I ran the speaker-test program. Running it without parameters or with 2 or 4.0 channels works also fine. So far so good. But when I run it with 5.0 channels or 5.1 channels the CPU load of speaker-test goes to 100%. I'll show the output of top along with the command lines below (for the 2.0 and 5.1 case) in the "Additional Information" box. ====================================================================== ---------------------------------------------------------------------- Raymond - 08-01-06 09:36 ---------------------------------------------------------------------- >>BTW: I found one (probably unrelated) information about the rear channel (on >>Hercules Game Theter XP7.1): The rear channels volume is regulated by controls >>Surround.0 and PCM.1 - this is very strange, as PCM.1 is the ONLY "index >>1"-device I found that is doing something useful. The jacks at the back support 5.1 plus the phone jack at the front to have 8 speakers. Not sure it is 8 channels unless cs4624 support 8 channels. ---------------------------------------------------------------------- Raymond - 08-01-06 10:46 ---------------------------------------------------------------------- For the bug reported in alsa-user mailing list, pcm.stereo41 { type route slave.pcm surround41 slave.channels 5 ttable.0.0 1 # 0 + 2 left channel ttable.0.2 1 ttable.1.1 1 # 1 + 3 right channel ttable.1.3 1 ttable.0.4 1 # 4 - subwoofer } AFAIK, 5 channels (surround41) is most likely not supported for most ALSA drivers. If surround41 and surround50 is not defined in CS46xx.conf, it usually mean unsupported(or not yet supported). Please correct me if I am wrong http://hg-mirror.alsa-project.org/alsa-lib?f=8b52e1eece1b;file=src/conf/cards/CS46xx.conf;style=gitweb Issue History Date Modified Username Field Change ====================================================================== 02-23-06 00:48 bitmage2 New Issue 02-23-06 00:48 bitmage2 Distribution => SuSE Linux 10.0 02-23-06 00:48 bitmage2 Kernel Version => Linux 2.6.13-15.8-default #1 Tue Feb 7 11:07:24 UTC 2006 i686 athlon i386 GNU/Linux 02-23-06 00:54 bitmage2 Note Added: 0008164 02-23-06 00:55 bitmage2 Issue Monitored: bitmage2 07-11-06 05:58 Raymond Note Added: 0010964 07-14-06 20:57 bitmage2 Note Added: 0011004 07-14-06 20:59 bitmage2 Note Added: 0011005 07-14-06 21:25 rlrevell Note Added: 0011006 07-14-06 22:40 bitmage2 Note Added: 0011008 07-14-06 22:57 rlrevell Note Added: 0011009 07-15-06 01:28 bitmage2 Note Added: 0011013 07-15-06 01:45 rlrevell Note Added: 0011014 07-15-06 05:09 Raymond Note Added: 0011017 07-15-06 07:17 Raymond Note Edited: 0011017 07-23-06 11:34 bitmage2 Note Added: 0011183 07-23-06 13:49 Raymond Note Added: 0011185 07-23-06 14:14 Raymond Note Added: 0011186 07-23-06 14:16 Raymond Note Deleted: 0011186 07-23-06 15:04 bitmage2 Note Added: 0011189 07-24-06 04:19 Raymond Note Added: 0011209 07-24-06 05:04 Raymond Note Edited: 0011209 07-24-06 20:38 bitmage2 Note Added: 0011214 07-25-06 03:00 Raymond Note Added: 0011223 07-25-06 03:03 Raymond Note Edited: 0011223 07-25-06 03:05 Raymond Note Edited: 0011223 07-25-06 10:05 Raymond Note Edited: 0011223 07-25-06 10:13 Raymond Note Edited: 0011223 07-25-06 21:53 bitmage2 Note Added: 0011232 07-26-06 02:03 Raymond Note Added: 0011235 07-26-06 02:09 Raymond Note Edited: 0011235 07-26-06 08:41 bitmage2 Note Added: 0011245 07-26-06 10:27 Raymond Note Added: 0011247 07-29-06 03:01 Raymond Note Added: 0011295 07-30-06 03:06 Raymond Note Added: 0011312 07-31-06 23:16 bitmage2 Note Added: 0011353 08-01-06 02:40 Raymond Note Added: 0011362 08-01-06 04:15 Raymond Note Added: 0011368 08-01-06 08:15 Raymond Note Added: 0011371 08-01-06 09:36 Raymond Note Added: 0011372 08-01-06 10:46 Raymond Note Added: 0011373 ====================================================================== ------------------------------------------------------------------------- Take Surveys. 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