Re: kern/43806: No sound on Thinkpad T510

[bch%methodlogic.net@localhost]

The following reply was made to PR kern/43806; it has been noted by GNATS.

From: bch%methodlogic.net@localhost
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost, lechapelaing%yahoo.fr@localhost
Subject: Re: kern/43806: No sound on Thinkpad T510
Date: Sun, 29 Aug 2010 20:29:26 +0000

 On Sun, Aug 29, 2010 at 12:30:05PM +0000, Manuel Bouyer wrote:
 > The following reply was made to PR kern/43806; it has been noted by GNATS.
 > 
 > From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
 > To: le chapelain germain <lechapelaing%yahoo.fr@localhost>
 > Cc: kern-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost, 
 > netbsd-bugs%NetBSD.org@localhost,
 >         gnats-bugs%NetBSD.org@localhost
 > Subject: Re: kern/43806: No sound on Thinkpad T510
 > Date: Sun, 29 Aug 2010 14:27:09 +0200
 > 
 >  On Sat, Aug 28, 2010 at 07:02:58AM +0000, le chapelain germain wrote:
 >  > I don't know if I am using hdaudio, I guess that's what I am trying to do.
 >  > I am using 5.99.39 as well.
 >  > 
 >  > bash-4.1$ dmesg | grep -i audio
 >  > hdaudio0 at pci1 dev 0 function 1: HD Audio Controller
 >  > hdaudio0: interrupting at ioapic0 pin 16
 >  > ...
 >  > bash-4.1$ ls /dev/hd*
 >  > ls: /dev/hd*: No such file or directory
 >  > 
 >  > How is it possible to see the line in dmesg and while not seeing the node 
 > in /dev ?
 >  
 >  device nodes are just files, you can give them the name you want (they
 >  don't have to match the device's name). For example, the device node for
 >  device com0 is /dev/tty00.
 >  Also, not all device instance have a device node associated. For example,
 >  network devices don't have a device node in /dev (they're accessible
 >  via another namespace).
 >  For this specific case, audio adapters are attached to the audio(4)
 >  framework, and are acessible through the generic nodes /dev/audio* and
 >  /dev/sound*.
 
 
 On my system (NetBSD kamloops 5.99.39 NetBSD 5.99.39 (kamloops) #205: Thu Aug 
26 19:35:29 PDT 2010  root@kamloops:/usr/obj/sys/arch/amd64/compile/kamloops 
amd64), I've got:
 
 kamloops# ls -ld /dev/hdau*
 crw-r--r--  1 root  wheel  195, 0 Apr 20 19:57 /dev/hdaudio0
 crw-r--r--  1 root  wheel  195, 1 Apr 20 19:57 /dev/hdaudio1
 crw-r--r--  1 root  wheel  195, 2 Apr 20 19:57 /dev/hdaudio2
 crw-r--r--  1 root  wheel  195, 3 Apr 20 19:57 /dev/hdaudio3
 
 
 ....but I just deleted them, and playing (via xmms) seems to work,
 but hdaudioctl now does not...
 
 I'll test on next reboot if my audio needs to have it's seemingly typical
 "hdaudioctl set 0x00 0x01" to get audible output.
 
 -bch
 
 
 
 -- 
 Brad Harder
 Method Logic Digital Consulting
 http://methodlogic.net/
 http://twitter.com/bcharder