Bug 155264
| Summary: | [handbook] Extend "7.2.2.1 Common Problems" with hw.snd.default_unit=n | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Documentation | Reporter: | Martin Ziegler <martin.ziegler> | ||||
| Component: | Books & Articles | Assignee: | Benedict Reuschling <bcr> | ||||
| Status: | Closed FIXED | ||||||
| Severity: | Affects Only Me | ||||||
| Priority: | Normal | ||||||
| Version: | Latest | ||||||
| Hardware: | Any | ||||||
| OS: | Any | ||||||
| Attachments: |
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Hi! Here is a patch to add a section about this to 7.2.2.1. Regards! -- Niclas State Changed From-To: open->feedback Take this one and wait for feedback from submitter whether the submitted patch from Niclas (thanks for that!) fits his intention. Responsible Changed From-To: freebsd-doc->bcr Take this one and wait for feedback from submitter whether the submitted patch from Niclas (thanks for that!) fits his intention. Patch looks good. Thanks for your effort. Martin bcr 2011-05-23 16:08:54 UTC
FreeBSD doc repository
Modified files:
en_US.ISO8859-1/books/handbook/multimedia chapter.sgml
Log:
Add a description and workaround for the problem where the built-in
sound devices of graphic cards are being assigned lower device numbers.
In order to use them, one has to change sysctls to the proper device
number than is being shown in the dmesg output.
PR: docs/155264
Submittted by: Martin Ziegler (martin dot ziegler at ziegi dot ch)
Patch created by: Niclas Zeising (niclas dot zeising at gmail dot com)
Minor additions by: me
Revision Changes Path
1.142 +41 -0 doc/en_US.ISO8859-1/books/handbook/multimedia/chapter.sgml
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State Changed From-To: feedback->closed Patch with minor corrections committed. Thanks to both Niclas for submitting the patch and Martin for providing the description to the problem in his PR. Good work, PR closed! |
Current graphic cards from ATI and Nvidia are often equipped with there own sound devices. Often these devices get lower device numbers (pcm*) than the actual sound card: > dmesg .. hdac0: HDA Driver Revision: 20100226_0142 hdac1: HDA Driver Revision: 20100226_0142 hdac0: HDA Codec #0: NVidia (Unknown) hdac0: HDA Codec #1: NVidia (Unknown) hdac0: HDA Codec #2: NVidia (Unknown) hdac0: HDA Codec #3: NVidia (Unknown) pcm0: <HDA NVidia (Unknown) PCM #0 DisplayPort> at cad 0 nid 1 on hdac0 pcm1: <HDA NVidia (Unknown) PCM #0 DisplayPort> at cad 1 nid 1 on hdac0 pcm2: <HDA NVidia (Unknown) PCM #0 DisplayPort> at cad 2 nid 1 on hdac0 pcm3: <HDA NVidia (Unknown) PCM #0 DisplayPort> at cad 3 nid 1 on hdac0 hdac1: HDA Codec #2: Realtek ALC889 pcm4: <HDA Realtek ALC889 PCM #0 Analog> at cad 2 nid 1 on hdac1 pcm5: <HDA Realtek ALC889 PCM #1 Analog> at cad 2 nid 1 on hdac1 pcm6: <HDA Realtek ALC889 PCM #2 Digital> at cad 2 nid 1 on hdac1 pcm7: <HDA Realtek ALC889 PCM #3 Digital> at cad 2 nid 1 on hdac1 .. As a result, the user need to set hw.snd.default_unit other than 0 (e.g. to 4 in the above example). Fix: Add a section about hw.snd.default_unit=n in the handbook, section "7.2.2.1 Common Problems" How-To-Repeat: -