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Old 09-20-2006, 01:34 PM   #1
iainr
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Sound works on live CD, not hard disk install


I've just installed Mepis 6.0 on my IBM Thinkpad R50e laptop with sound card Intel 82801DB-ICH4.

When I boot Mepis from the live CD, sound playback works fine (e.g. the speaker-test command plays back noise).

When I boot from the Mepis installed on the hard disk, everything looks OK (no errors reported from the sound system) but no sound either.

I do get sound from the system bell on the disk install, but otherwise nothing.

I can't see any configuration differences between the two and I've checked that the volume's turned up with kmix and on the laptop's own sound controls.

My previous installation of SuSE 10.1 had similar problems : sound didn't work on SuSE 10.0, started working again when I upgraded to 10.1 and mysteriously stopped after some patch or other, never to return.

Any ideas?
 
Old 09-20-2006, 02:08 PM   #2
caps_phisto
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Sounds to me like it may be a Kernel Problem.

Most LiveCD's have a lot of stuff that comes pre-built into the kernel or at least a lot of pre-built modules (this is to ensure that their CD works on most hardware without the user needing to configure anything). A quick check would be to insert the CD and boot it up. At a command line run
Code:
lsmod
.

Write down or print off that output and then do the same when it's booted form the hard disk.

You may find that the Kernel that is on the CD is configured differently than the one that gets installed to the HD.
 
Old 09-20-2006, 04:17 PM   #3
iainr
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I don't see any relevant differences in lsmod, but it may be that I'm missing something.

I see 11 modules that look relevant and they're all loaded in both : snd_intel8x0, snd_intel8x0m, snd_ac97_codec, snd_ac97_bus, snd_pcm_oss, snd_mixer_oss, snd_pcr, snd_timer, snd, soundcore and snd_page_alloc.

lsmod from Disk (sound doesn't work)

Code:
Module                  Size  Used by
i915                   18432  1
drm                    66196  2 i915
binfmt_misc            11144  1
ppdev                   8452  0
capifs                  5896  1
video                  16260  0
thermal                13576  0
tc1100_wmi              6916  0
sony_acpi               5644  0
pcc_acpi               12416  0
ibm_acpi               26112  0
hotkey                 11556  0
fan                     4868  0
dev_acpi               11140  0
container               4608  0
button                  6672  0
acpi_sbs               19980  0
battery                 9988  1 acpi_sbs
i2c_acpi_ec             5120  1 acpi_sbs
i2c_core               19984  1 i2c_acpi_ec
ac                      5252  1 acpi_sbs
ipt_limit               2432  2
ipt_state               2048  66
ipt_LOG                 6016  2
ipt_REJECT              5248  2
ip_conntrack_ftp        7280  0
ip_conntrack_irc        6640  0
ip_conntrack           47148  3 ipt_state,ip_conntrack_ftp,ip_conntrack_irc
nfnetlink               6296  1 ip_conntrack
ndiswrapper           156628  0
cpufreq_userspace       4440  0
cpufreq_powersave       1920  0
cpufreq_ondemand        6172  0
speedstep_lib           4228  0
speedstep_centrino      7888  1
freq_table              4484  1 speedstep_centrino
processor              23360  2 thermal,speedstep_centrino
dm_mod                 52152  0
md_mod                 64084  0
af_packet              21000  4
orinoco_cs             17544  1
orinoco                37652  1 orinoco_cs
hermes                  7424  2 orinoco_cs,orinoco
yenta_socket           25740  3
rsrc_nonstatic         12288  1 yenta_socket
pcmcia                 36668  1 orinoco_cs
sworks_agp              8864  0
amd_k7_agp              8204  0
ali_agp                 6656  0
sis_agp                 8452  0
ati_agp                 8332  0
nvidia_agp              7964  0
via_agp                 9600  0
pcmcia_core            38672  3 yenta_socket,rsrc_nonstatic,pcmcia
e100                   36356  0
mii                     5376  1 e100
rtc                    12468  0
parport_pc             32708  1
lp                     10820  0
parport                32968  3 ppdev,parport_pc,lp
intel_agp              21276  1
agpgart                31816  10 drm,sworks_agp,amd_k7_agp,ali_agp,sis_agp,ati_agp,nvidia_agp,via_agp,intel_agp
snd_intel8x0m          16268  7
psmouse                32772  0
serio_raw               6916  0
snd_intel8x0           30620  2
snd_ac97_codec         83360  2 snd_intel8x0m,snd_intel8x0
snd_ac97_bus            2304  1 snd_ac97_codec
snd_pcm_oss            46368  0
snd_mixer_oss          16896  3 snd_pcm_oss
pcspkr                  2052  0
shpchp                 40384  0
pci_hotplug            26164  1 shpchp
snd_pcm                79880  6 snd_intel8x0m,snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer              22660  1 snd_pcm
snd                    50276  19 snd_intel8x0m,snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore               9568  3 snd
snd_page_alloc         10248  3 snd_intel8x0m,snd_intel8x0,snd_pcm
uhci_hcd               29328  0
evdev                   9088  1
lsmod from Live DVD (sound does work

Code:
Module                  Size  Used by
i915                   18432  1
drm                    66196  2 i915
binfmt_misc            11144  1
ppdev                   8452  0
capifs                  5896  1
video                  16260  0
thermal                13576  0
tc1100_wmi              6916  0
sony_acpi               5644  0
pcc_acpi               12416  0
ibm_acpi               26112  0
hotkey                 11556  0
fan                     4868  0
dev_acpi               11140  0
container               4608  0
button                  6672  0
acpi_sbs               19980  0
battery                 9988  1 acpi_sbs
i2c_acpi_ec             5120  1 acpi_sbs
i2c_core               19984  1 i2c_acpi_ec
ac                      5252  1 acpi_sbs
ndiswrapper           156628  0
cpufreq_userspace       4440  0
cpufreq_powersave       1920  0
cpufreq_ondemand        6172  0
speedstep_lib           4228  0
speedstep_centrino      7888  1
freq_table              4484  1 speedstep_centrino
processor              23360  2 thermal,speedstep_centrino
psmouse                32772  0
dm_mod                 52152  0
af_packet              21000  4
md_mod                 64084  0
orinoco_cs             17544  1
orinoco                37652  1 orinoco_cs
hermes                  7424  2 orinoco_cs,orinoco
yenta_socket           25740  3
rsrc_nonstatic         12288  1 yenta_socket
pcmcia                 36668  1 orinoco_cs
pcmcia_core            38672  3 yenta_socket,rsrc_nonstatic,pcmcia
snd_intel8x0m          16268  6
snd_pcm_oss            46368  0
snd_mixer_oss          16896  1 snd_pcm_oss
e100                   36356  0
snd_intel8x0           30620  1
snd_ac97_codec         83360  2 snd_intel8x0m,snd_intel8x0
snd_ac97_bus            2304  1 snd_ac97_codec
serio_raw               6916  0
mii                     5376  1 e100
pcspkr                  2052  0
snd_pcm                79880  6 snd_intel8x0m,snd_pcm_oss,snd_intel8x0,snd_ac97_codec
snd_timer              22660  1 snd_pcm
parport_pc             32708  1
lp                     10820  0
parport                32968  3 ppdev,parport_pc,lp
rtc                    12468  0
sworks_agp              8864  0
amd_k7_agp              8204  0
ali_agp                 6656  0
sis_agp                 8452  0
ati_agp                 8332  0
nvidia_agp              7964  0
via_agp                 9600  0
snd                    50276  19 snd_intel8x0m,snd_pcm_oss,snd_mixer_oss,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer
soundcore               9568  1 snd
snd_page_alloc         10248  3 snd_intel8x0m,snd_intel8x0,snd_pcm
shpchp                 40384  0
pci_hotplug            26164  1 shpchp
intel_agp              21276  1
agpgart                31816  10 drm,sworks_agp,amd_k7_agp,ali_agp,sis_agp,ati_agp,nvidia_agp,via_agp,intel_agp
uhci_hcd               29328  0
evdev                   9088  1
 
Old 09-20-2006, 04:25 PM   #4
mos
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open up kmix, goto switches and turn off line jack sense and headphone jack sense
 
Old 09-20-2006, 04:35 PM   #5
iainr
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Fantastic mos, that worked! Many thanks.

Any idea why it works, by the way?
 
Old 09-20-2006, 08:35 PM   #6
mos
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its just a bug
 
  


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