I noticed when I installed the alsa cs46xx driver that the AC'97 codec supported various IEC958 options, and so I am now trying to get a S/PDIF link between my laptop and audio receiver. The IEC958 device is hw:0.2. When I use that device (or "spdif" or "iec958") in mplayer, the program opens the correct device and appears to be playing but I do not get hear anything, which comes to my question:
Is the s/pdif output in my laptop actually wired to anything? I believe that some cards will use one of the stereo channels on line-out (like the i810 for example) and I was hoping this was the case with my laptop as well. There is also a rear speaker device (hw:0.1) which so far as I can tell is not connected to anything. The laptop has 3 minijack connections: line-out, line-in and mic. I am apparantly the first person to try something as silly as get S/PDIF from a laptop, as I can find nothing on the internet to help answer this question. Machine: IBM Thinkpad T22 Audio: 00:05.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24 [CrystalClear SoundFusion Audio Accelerator] (rev 01) Kernel: 2.6.0-test7 Alsa-lib: 0.9.6 [EMAIL PROTECTED] /]$ cat /proc/asound/card0/ac97#0 0-0/0: Cirrus Logic CS4297A rev 4 Capabilities : -headphone out- DAC resolution : 20-bit ADC resolution : 18-bit 3D enhancement : Crystal Semi 3D Stereo Enhancement Current setup Mic gain : +0dB [+0dB] POP path : pre 3D Sim. stereo : off 3D enhancement : off Loudness : off Mono output : MIX Mic select : Mic1 ADC/DAC loopback : off Extended ID : codec=0 rev=0 AMAP DSA=0 Extended status : SPDIF Control : Consumer PCM Category=0x2 Generation=1 Rate=48kHz Enabled [EMAIL PROTECTED] /]$ cat /proc/asound/card0/ac97#0regs 0:00 = 1990 0:02 = 0000 0:04 = 9f1f 0:06 = 801f 0:08 = 0000 0:0a = 801e 0:0c = 801f 0:0e = 801f 0:10 = 9f1f 0:12 = 9f1f 0:14 = 9f1f 0:16 = 9f1f 0:18 = 0707 0:1a = 0000 0:1c = 0000 0:1e = 0000 0:20 = 0000 0:22 = 0000 0:24 = 0000 0:26 = 800f 0:28 = 0200 0:2a = 0000 0:2c = bb80 0:2e = 0000 0:30 = 0000 0:32 = bb80 0:34 = 0000 0:36 = 0000 0:38 = 0000 0:3a = 0000 0:3c = 0000 0:3e = 0000 0:40 = 0000 0:42 = 0000 0:44 = 0000 0:46 = 0000 0:48 = 0000 0:4a = 0000 0:4c = 0000 0:4e = 0000 0:50 = 0000 0:52 = 0000 0:54 = 0000 0:56 = 0000 0:58 = 0000 0:5a = 0404 0:5c = 0000 0:5e = 0080 0:60 = 0022 0:62 = 0000 0:64 = 0000 0:66 = 0000 0:68 = 8824 0:6a = 0000 0:6c = 0000 0:6e = 0000 0:70 = 0000 0:72 = 0000 0:74 = 0000 0:76 = 0000 0:78 = 007d 0:7a = 0000 0:7c = 4352 0:7e = 5914 [EMAIL PROTECTED] /]$ ------------------------------------------------------- This SF.net email is sponsored by: The SF.net Donation Program. Do you like what SourceForge.net is doing for the Open Source Community? Make a contribution, and help us add new features and functionality. Click here: http://sourceforge.net/donate/ _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
