The following issue has been REOPENED. ====================================================================== <https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2159> ====================================================================== Reported By: nikke Assigned To: Clemens Ladisch ====================================================================== Project: ALSA - driver Issue ID: 2159 Category: PCI - ymfpci Reproducibility: always Severity: minor Priority: normal Status: feedback Distribution: Debian Kernel Version: 2.6.15 ====================================================================== Date Submitted: 05-24-2006 23:44 CEST Last Modified: 06-19-2006 21:43 CEST ====================================================================== Summary: ac3 passthrough not working on recent versions Description: Using the following AC3 passthrough with mplayer works: Linux 2.4.31 alsa-driver 1.0.8-7 (debian stable packaged) Using Linux 2.6.15 (both with alsa-driver 1.10rc3 that ships with the kernel and alsa-driver 1.0.11) it doesn't work. The reciever just says "unlock" and stays quiet. The only change is booting with different kernels, no other config or hardware is touched, so this must be a driver regression. The card is YMF-754 based, connected with coax spdif to my HK reciever. If you need more info, just tell me and I'll dig it up. ====================================================================== ---------------------------------------------------------------------- Clemens Ladisch - 06-19-06 13:33 ---------------------------------------------------------------------- My patch indeed broke AC3 passthrough. However, it fixed the incorrect channel routing of the rear analog output. The problem of the swapped rear channels is a bug in either the hardware or in the firmware Yamaha provided to us, so the driver has to work around it by swapping the rear channels before playing them. The rear channels are a resource shared between the rear analog output and the digital output, so the channel swapping workaround affects both outputs (although the bug itself affects only the analog output). A later patch added the rear_swap module option so that the user can choose which one of the outputs is right. Use "rear_swap=1" to get correct AC3 output. (This module option probably should be a mixer option.) ---------------------------------------------------------------------- nikke - 06-19-06 21:43 ---------------------------------------------------------------------- Euh. Now I'm confused. My interpretion of the docs are that default options in 1.0.11 are to do output so AC3 works. This seems like a sane behaviour to me, since AC3 has worked before and there are probably more users of AC3 surround than analog output surround. Also, I have tried 1.0.11 both with rear_swap=0 and =1 (using modprobe snd-ymfpci rear_swap=X) and neither works. Am I missing something obvious? Issue History Date Modified Username Field Change ====================================================================== 05-24-06 23:44 nikke New Issue 05-24-06 23:44 nikke Distribution => Debian 05-24-06 23:44 nikke Kernel Version => 2.6.15 05-24-06 23:47 nikke Issue Monitored: nikke 06-02-06 04:23 Raymond Note Added: 0010045 06-02-06 04:25 Raymond Note Edited: 0010045 06-12-06 13:14 Mimosius Issue Monitored: Mimosius 06-14-06 22:32 nikke Note Added: 0010216 06-15-06 02:18 Raymond Note Added: 0010221 06-15-06 02:27 Raymond Note Edited: 0010221 06-15-06 11:03 Mimosius Note Added: 0010237 06-15-06 23:43 nikke Note Added: 0010246 06-16-06 13:01 Mimosius Note Added: 0010250 06-16-06 13:16 Mimosius Note Edited: 0010250 06-16-06 13:26 Raymond Note Added: 0010251 06-16-06 13:31 Raymond Note Edited: 0010251 06-16-06 13:37 Mimosius Note Added: 0010252 06-16-06 16:25 Raymond Note Added: 0010255 06-17-06 01:17 nikke Note Added: 0010262 06-17-06 02:43 Raymond Note Edited: 0010251 06-17-06 10:21 Raymond Note Added: 0010266 06-17-06 10:24 Raymond Note Edited: 0010266 06-17-06 11:02 Raymond Note Added: 0010267 06-17-06 14:25 Raymond Note Added: 0010268 06-17-06 15:16 nikke Note Added: 0010269 06-17-06 16:10 Raymond Note Added: 0010270 06-17-06 16:23 Raymond Note Edited: 0010270 06-17-06 18:22 rlrevell Note Added: 0010280 06-18-06 04:03 Raymond Note Added: 0010295 06-18-06 04:08 Raymond Note Edited: 0010295 06-18-06 04:14 Raymond Note Edited: 0010295 06-18-06 13:30 Raymond Note Edited: 0010295 06-19-06 13:11 Clemens LadischStatus new => assigned 06-19-06 13:11 Clemens LadischAssigned To => Clemens Ladisch 06-19-06 13:33 Clemens LadischStatus assigned => resolved 06-19-06 13:33 Clemens LadischResolution open => not fixable 06-19-06 13:33 Clemens LadischNote Added: 0010307 06-19-06 21:43 nikke Status resolved => feedback 06-19-06 21:43 nikke Resolution not fixable => reopened 06-19-06 21:43 nikke Note Added: 0010320 ====================================================================== _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
