From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erik Slagter Subject: Specs available for Sweex External 5.1 with digital in/out USB 2.0 / C-Media CM6207 Date: Tue, 03 Jun 2008 22:05:52 +0200 Message-ID: <4845A420.10804@slagter.name> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2069252722264665892==" Return-path: Received: from eriks.xs4all.nl (eriks.xs4all.nl [83.160.41.216]) by alsa0.perex.cz (Postfix) with ESMTP id 8F0D92480D for ; Tue, 3 Jun 2008 22:05:53 +0200 (CEST) Received: from artemis.slagter.name (localhost.localdomain [127.0.0.1]) by artemis.slagter.name (Postfix) with ESMTP id EED951434195 for ; Tue, 3 Jun 2008 22:05:52 +0200 (CEST) Received: from [172.31.0.46] (skylla.intern [172.31.0.46]) by artemis.slagter.name (Postfix) with ESMTP for ; Tue, 3 Jun 2008 22:05:52 +0200 (CEST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org This is a cryptographically signed message in MIME format. --===============2069252722264665892== Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms040403090301030502080209" This is a cryptographically signed message in MIME format. --------------ms040403090301030502080209 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi there, Today I bought this sound device, I was hoping it had the C-Media CM650? USB chip which is already supported by alsa (according to the list). Instead it has a CM6207 inside. The good news is that it supports USB audio "class" and it's more or less usable, some mixer outputs are available (although they're all called "speaker") and with some trickery the various outputs can be used. The other good news is that Sweex supplies the "official" datasheet from C-media which I think is quite interesting and may very well be useful to resolve the last few issues. These are the actual issues (so far, I didn't yet test it exhaustively): - using 2 channel output the sound is garbled; it looks like the "wrong" 2 channel alt setting is used (output of /proc/asound/card?/stream0 on request), 4/6 channel output is OK though. - some high squeeking noise although C-Media claims the IC to be high-end (or maybe their definition of high-end differs from mine ;-)) - all outputs are labelled "speaker 1" - only two outputs have a mute knob, the others cannot be silenced in any way, only turned down - one of the two outputs with the mute knob doesn't appear to do anything (or maybe it's the sp/dif output?) - the other (with mute) controls the front output - the others (without mute) don't seem to do anything at all Is this a typical case of (a) bug(s) in the usb audio class driver or should I think of "vendor extensions" here? Would any of the developers have some interest in the datasheet of the chip and or any data of this thing? Of course I'd like it very much if the device would be fully supported but I can only ask nicely ;-) --------------ms040403090301030502080209 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJUTCC AwMwggJsoAMCAQICEDGJsD9UPajwBl+GeyaBWA0wDQYJKoZIhvcNAQEFBQAwYjELMAkGA1UE BhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMT I1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA3MDkxNzEwMzAwM1oX DTA4MDkxNjEwMzAwM1owajEQMA4GA1UEBBMHU2xhZ3RlcjEVMBMGA1UEKhMMRXJpayBNYXJ0 aWpuMR0wGwYDVQQDExRFcmlrIE1hcnRpam4gU2xhZ3RlcjEgMB4GCSqGSIb3DQEJARYRZXJp a0BzbGFndGVyLm5hbWUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC4bkf+nXAx akUjjwscSMjaKSUFQiJPxTgOUEh+uKVsBVGvY7CB8XcCmU7+oO1s9NaTL7BVy7Lwpj5SJV/B v8gZWrHwsR3D7U2rcKUW81v7dkTu9GTAUt5Qc8b7+GehjZuZKZPjMdH6vJK9G7YnZu1gG9b0 CoEC4jOdIR4+4di2ZUN9M5JLlVKofOP4fo8MKFny88ThmxHLGzzQGsshfs7wuYB2hivouPCf kmc+tnTI90mLrV748Yc6M9gq1brUajcy+tL0wdTS0NOJ2FVa/0HFlxaMrt88nko2J7wA+yPM RY1L+ziU+Qr45JxoCE6pI/6lZNlMtHeYvdveQZs/3n5HAgMBAAGjLjAsMBwGA1UdEQQVMBOB EWVyaWtAc2xhZ3Rlci5uYW1lMAwGA1UdEwEB/wQCMAAwDQYJKoZIhvcNAQEFBQADgYEAZrik whMvx+aaj7gXQDVuy+zs7eqq1zJilrNS1130Hrq0JeLC6Rnl6a1gE52gap2O6uLyfpdGBmXu loCzA9OPYKcZT6EtcZKF3+TCP0m9L3G1scQPPrxZt/oA4uZ4MDTvLElPJH2ONOvCoRPrp5aD YHD5NlsDjs+kG6559873oTwwggMDMIICbKADAgECAhAxibA/VD2o8AZfhnsmgVgNMA0GCSqG SIb3DQEBBQUAMGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAo UHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBD QTAeFw0wNzA5MTcxMDMwMDNaFw0wODA5MTYxMDMwMDNaMGoxEDAOBgNVBAQTB1NsYWd0ZXIx FTATBgNVBCoTDEVyaWsgTWFydGlqbjEdMBsGA1UEAxMURXJpayBNYXJ0aWpuIFNsYWd0ZXIx IDAeBgkqhkiG9w0BCQEWEWVyaWtAc2xhZ3Rlci5uYW1lMIIBIjANBgkqhkiG9w0BAQEFAAOC AQ8AMIIBCgKCAQEAuG5H/p1wMWpFI48LHEjI2iklBUIiT8U4DlBIfrilbAVRr2OwgfF3AplO /qDtbPTWky+wVcuy8KY+UiVfwb/IGVqx8LEdw+1Nq3ClFvNb+3ZE7vRkwFLeUHPG+/hnoY2b mSmT4zHR+rySvRu2J2btYBvW9AqBAuIznSEePuHYtmVDfTOSS5VSqHzj+H6PDChZ8vPE4ZsR yxs80BrLIX7O8LmAdoYr6Ljwn5JnPrZ0yPdJi61e+PGHOjPYKtW61Go3MvrS9MHU0tDTidhV Wv9BxZcWjK7fPJ5KNie8APsjzEWNS/s4lPkK+OScaAhOqSP+pWTZTLR3mL3b3kGbP95+RwID AQABoy4wLDAcBgNVHREEFTATgRFlcmlrQHNsYWd0ZXIubmFtZTAMBgNVHRMBAf8EAjAAMA0G CSqGSIb3DQEBBQUAA4GBAGa4pMITL8fmmo+4F0A1bsvs7O3qqtcyYpazUtdd9B66tCXiwukZ 5emtYBOdoGqdjuri8n6XRgZl7paAswPTj2CnGU+hLXGShd/kwj9JvS9xtbHEDz68Wbf6AOLm eDA07yxJTyR9jjTrwqET66eWg2Bw+TZbA47PpBuueffO96E8MIIDPzCCAqigAwIBAgIBDTAN BgkqhkiG9w0BAQUFADCB0TELMAkGA1UEBhMCWkExFTATBgNVBAgTDFdlc3Rlcm4gQ2FwZTES MBAGA1UEBxMJQ2FwZSBUb3duMRowGAYDVQQKExFUaGF3dGUgQ29uc3VsdGluZzEoMCYGA1UE CxMfQ2VydGlmaWNhdGlvbiBTZXJ2aWNlcyBEaXZpc2lvbjEkMCIGA1UEAxMbVGhhd3RlIFBl cnNvbmFsIEZyZWVtYWlsIENBMSswKQYJKoZIhvcNAQkBFhxwZXJzb25hbC1mcmVlbWFpbEB0 aGF3dGUuY29tMB4XDTAzMDcxNzAwMDAwMFoXDTEzMDcxNjIzNTk1OVowYjELMAkGA1UEBhMC WkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1Ro YXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMIGfMA0GCSqGSIb3DQEBAQUAA4GN ADCBiQKBgQDEpjxVc1X7TrnKmVoeaMB1BHCd3+n/ox7svc31W/Iadr1/DDph8r9RzgHU5VAK MNcCY1osiRVwjt3J8CuFWqo/cVbLrzwLB+fxH5E2JCoTzyvV84J3PQO+K/67GD4Hv0CAAmTX p6a7n2XRxSpUhQ9IBH+nttE8YQRAHmQZcmC3+wIDAQABo4GUMIGRMBIGA1UdEwEB/wQIMAYB Af8CAQAwQwYDVR0fBDwwOjA4oDagNIYyaHR0cDovL2NybC50aGF3dGUuY29tL1RoYXd0ZVBl cnNvbmFsRnJlZW1haWxDQS5jcmwwCwYDVR0PBAQDAgEGMCkGA1UdEQQiMCCkHjAcMRowGAYD VQQDExFQcml2YXRlTGFiZWwyLTEzODANBgkqhkiG9w0BAQUFAAOBgQBIjNFQg+oLLswNo2as Zw9/r6y+whehQ5aUnX9MIbj4Nh+qLZ82L8D0HFAgk3A8/a3hYWLD2ToZfoSxmRsAxRoLgnSe JVCUYsfbJ3FXJY3dqZw5jowgT2Vfldr394fWxghOrvbqNOUQGls1TXfjViF4gtwhGTXeJLHT HUb/XV9lTzGCA3EwggNtAgEBMHYwYjELMAkGA1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBD b25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFp bCBJc3N1aW5nIENBAhAxibA/VD2o8AZfhnsmgVgNMAkGBSsOAwIaBQCgggHQMBgGCSqGSIb3 DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8XDTA4MDYwMzIwMDU1MlowIwYJKoZI hvcNAQkEMRYEFI1Qu6AeEgo4C3UXHhWXuTKe1+qQMF8GCSqGSIb3DQEJDzFSMFAwCwYJYIZI AWUDBAECMAoGCCqGSIb3DQMHMA4GCCqGSIb3DQMCAgIAgDANBggqhkiG9w0DAgIBQDAHBgUr DgMCBzANBggqhkiG9w0DAgIBKDCBhQYJKwYBBAGCNxAEMXgwdjBiMQswCQYDVQQGEwJaQTEl MCMGA1UEChMcVGhhd3RlIENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhhd3Rl IFBlcnNvbmFsIEZyZWVtYWlsIElzc3VpbmcgQ0ECEDGJsD9UPajwBl+GeyaBWA0wgYcGCyqG SIb3DQEJEAILMXigdjBiMQswCQYDVQQGEwJaQTElMCMGA1UEChMcVGhhd3RlIENvbnN1bHRp bmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhhd3RlIFBlcnNvbmFsIEZyZWVtYWlsIElzc3Vp bmcgQ0ECEDGJsD9UPajwBl+GeyaBWA0wDQYJKoZIhvcNAQEBBQAEggEAokMzw8OiNd5IX0tk 9Z0bG1NeSxITSON89rzRV6srpWkEBAtcvY+1JAgf0x7vo/HPY/0SF0Z/uaJhxftE8kOVq8du qF60/7AstNjbk2usfzmWiQyDb4dG7/eQD1HBA3FI3sf88s3/HdhL46nKVlxFWSBzF0TGSbcD h4rVx0eYOnT9GMmD0metCRsCOXiqFjCal/r9wmpc6jSkgNIWZIlERPj368D8wdWijCCy3L6+ 3YfQMLwsA5fqRfxzeg+Bm+FZMkTIbS1x1gBPuzWJB+fQl9PkU55L9f7TWfCLxflbo5B0TR2s tOemNxjmv4NsQL3JXBJyHUVvFyNZzZCHdnD2/QAAAAAAAA== --------------ms040403090301030502080209-- --===============2069252722264665892== Content-Type: text/plain; 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