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bendy
Apprentice
Joined: 18 May 2002
Posts: 274
Location: Gloucester, UK
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 Posted: Tue Nov 16, 2004 12:42 pm Post subject: Sound on thinkpad t22 with alsa and 2.6.x kernel |
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Hi,
I have gentoo installed on a thinkpad t22, and everything works fine except that I can't get any sound from it. I have 'alsa' in my USE flags. Sound card is: | Code: | bash-2.05b# lspci | grep audio
0000:00:05.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24 [CrystalClear SoundFusion Audio Accelerator] (rev 01) |
so I need the cs46xx driver, which is compiled as a module in my kernel (currently gentoo-dev-sources-2.6.9-r1, but the same problems were encountered on older 2.6.x kernels).
My /etc/modules.d/alsa says:
| Code: | # Alsa 0.9.X kernel modules' configuration file.
# $Header: /var/cvsroot/gentoo-x86/media-sound/alsa-utils/files/alsa-modules.conf-rc,v 1.2 2004/07/18 03:40:55 dragonheart$
# ALSA portion
alias char-major-116 snd
# OSS/Free portion
alias char-major-14 soundcore
##
## IMPORTANT:
## You need to customise this section for your specific sound card(s)
## and then run `update-modules' command.
## Read alsa-driver's INSTALL file in /usr/share/doc for more info.
##
## ALSA portion
alias snd-card-0 snd-cs46xx
options snd-cs46xx thinkpad=1 index=0
## alias snd-card-1 snd-ens1371
## OSS/Free portion
## alias sound-slot-1 snd-card-1
##
# OSS/Free portion - card #1
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
## OSS/Free portion - card #2
## alias sound-service-1-0 snd-mixer-oss
## alias sound-service-1-3 snd-pcm-oss
## alias sound-service-1-12 snd-pcm-oss
alias /dev/mixer snd-mixer-oss
alias /dev/dsp snd-pcm-oss
alias /dev/midi snd-seq-oss
# Set this to the correct number of cards.
options snd cards_limit=1 |
and lsmod says:
| Code: | bash-2.05b# lsmod
Module Size Used by
thinkpad 5028 0
orinoco_cs 6984 1
orinoco 42028 1 orinoco_cs
hermes 7936 2 orinoco_cs,orinoco
snd_seq_midi 6432 0
snd_cs46xx 78728 0
snd_rawmidi 20452 2 snd_seq_midi,snd_cs46xx
snd_ac97_codec 70448 1 snd_cs46xx
snd_seq_oss 32384 0
snd_seq_midi_event 6208 2 snd_seq_midi,snd_seq_oss
snd_seq 50288 5 snd_seq_midi,snd_seq_oss,snd_seq_midi_event
snd_seq_device 6280 4 snd_seq_midi,snd_rawmidi,snd_seq_oss,snd_seq
snd_pcm_oss 50568 0
snd_pcm 87464 2 snd_cs46xx,snd_pcm_oss
snd_timer 22052 2 snd_seq,snd_pcm
snd_page_alloc 7464 2 snd_cs46xx,snd_pcm
snd_mixer_oss 18080 1 snd_pcm_oss |
So everything looks good. I have of course unmuted the sound channels using alsamixer. Still - no sound from the speakers, or from headphones plugged into the machine.
I did notice this in my dmesg output:
| Code: | Advanced Linux Sound Architecture Driver Version 1.0.6 (Sun Aug 15 07:17:53 2004 UTC).
ALSA device list:
No soundcards found. |
Is that normal?
The machine was second-hand when I bought it, so it is possible there is a hardware problem, although it does beep at me from time to time.
Any suggestions? |
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tutaepaki
Apprentice
Joined: 11 Nov 2003
Posts: 279
Location: New Zealand
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| Posted: Tue Nov 16, 2004 7:58 pm Post subject: |
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I have gentoo on a T22, and the sound works fine. You should see
| Code: | | #0: sound Fusion CS46xx at ........... |
in your ALSA device list.
There is only 2 differences in my modules.d/alsa file...
I don't have this entry
| Code: | | options snd-cs46xx thinkpad=1 index=0 |
And I have an entry under the OSS/Free portion
| Code: | | alias sound-slot-0 snd-card-0 |
Which you don't have.
And I compiled the CS-46xx module into the kernel rather than as a module.
tut. |
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bendy
Apprentice
Joined: 18 May 2002
Posts: 274
Location: Gloucester, UK
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| Posted: Tue Nov 16, 2004 9:32 pm Post subject: |
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Thanks tut - I changed my /etc/modules.d/alsa to match your's (which is how I had it a while ago), and ran modules-update again, but it still doesn't work.
I am wondering if the "No soundcards found" message I get when booting is because the module is loaded at that time, whereas you have it compiled into the kernel. I might try that next - I certainly can't think of anything else to try.... |
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