On Wed, Jul 2, 2008 at 9:36 PM, William L. Maltby CentOS4Bill@triad.rr.com wrote:
On Wed, 2008-07-02 at 16:52 +1000, hce wrote:
On Tue, Jul 1, 2008 at 7:20 PM, William L. Maltby CentOS4Bill@triad.rr.com wrote:
On Mon, 2008-06-30 at 23:51 -0500, Alex White wrote: hce wrote:
Hi,
I've installed CentOS 5.2 to a laptop Acer 5920 for dual boot, the audio works in Window Vista, but does not work in CentOS 5.2. Does CentOS 5.2 support following audio chip or not?
Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
Thank you.
Kind Regards,
Jim
When you say it doesn't work, are you getting an error message saying that there's no sound device?
No.
Does lspci list your soundcard? If you have a super long list and can't locate it easily, you can try (but I can't promise this will work for you, it does for me however) lspci | grep audio
Please see following lspci information for the audio, seems ok.
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03) Subsystem: Acer Incorporated [ALI] Unknown device 0121 Flags: bus master, fast devsel, latency 0, IRQ 66 Memory at f0500000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied>
<snip>
I'm certainly not expert on this, but I can think of a few things to examine that might give a clue.
First, under 5.1, do an lsmod and note the driver(s) loaded for the audio. Might want to examine the modprobe.conf file too.
Please see following results from modproble.conf and lsmod. I can see that the soundcore was loaded, I guess the audio module was loaded, right?
$ cat /etc/modprobe.conf alias eth0 tg3 alias scsi_hostadapter ata_piix alias scsi_hostadapter1 ahci alias snd-card-0 snd-hda-intel options snd-card-0 index=0 options snd-hda-intel index=0 remove snd-hda-intel { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-hda-intel
$ /sbin/lsmod Module Size Used by i915 23745 2 drm 65493 3 i915 ipv6 258273 24 xfrm_nalgo 13765 1 ipv6 crypto_api 11969 1 xfrm_nalgo autofs4 24517 2 hidp 23105 2 rfcomm 42457 0 l2cap 29505 10 hidp,rfcomm bluetooth 53797 5 hidp,rfcomm,l2cap sunrpc 144893 1 cpufreq_ondemand 12493 1 dm_mirror 29253 0 dm_multipath 22089 0 dm_mod 61661 2 dm_mirror,dm_multipath video 21193 0 sbs 18533 0 backlight 10049 1 video i2c_ec 9025 1 sbs button 10705 0 battery 13637 0 asus_acpi 19289 0 ac 9157 0 parport_pc 29157 0 lp 15849 0 parport 37513 2 parport_pc,lp joydev 13313 0 snd_hda_intel 24793 1 snd_hda_codec 210881 1 snd_hda_intel snd_seq_dummy 7877 0 snd_seq_oss 32577 0 snd_seq_midi_event 11073 1 snd_seq_oss snd_seq 49585 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event snd_seq_device 11725 3 snd_seq_dummy,snd_seq_oss,snd_seq snd_pcm_oss 42945 0 snd_mixer_oss 19009 1 snd_pcm_oss snd_pcm 72005 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss snd_timer 24517 2 snd_seq,snd_pcm snd 52421 11 snd_hda_intel,snd_hda_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer soundcore 11553 1 snd sg 36189 0 ide_cd 40033 0 snd_page_alloc 14281 2 snd_hda_intel,snd_pcm sdhci 21337 0 mmc_core 27457 1 sdhci cdrom 36705 1 ide_cd pcspkr 7105 0 tg3 107717 0 i2c_i801 11597 0 i2c_core 23745 2 i2c_ec,i2c_i801 serio_raw 10693 0 ata_piix 22341 0 ahci 30149 2 libata 143997 2 ata_piix,ahci sd_mod 24897 3 scsi_mod 134605 3 sg,libata,sd_mod ext3 123593 2 jbd 56553 1 ext3 uhci_hcd 25421 0 ohci_hcd 23261 0 ehci_hcd 33357 0
Under 5.2, was that file changed by update? Do "updatedb" and then "locate rpmnew" and "locate rpmsave". If any are found, that indicates that a new config (usually) file is available or was installed. These need to be examined and sometimes adjusted (rpmsave) or adjusted and installed (rpmnew).
The 5.2 was installed from scratch, it was not updated from an old version.
Check (5.1 and 5.2) /var/log/dmesg and /var/log/messages for anything related to the sound. If the device was found, there should be something there.
I've checked dmesg and messages, but could not find any word to Audio, or audio, or sound. But again, I checked dmesg and messages from my desktop which installed FC7 and I could not find anything to audio and sound as well.
The only suspecious I could find was following boot message, but I am not sure it was related or not, and not sure how could fix following.
PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.0 PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.0 PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.0 PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.3 PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.3 PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.3 PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.5 PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.5 PCI: Cannot allocate resource region 9 of bridge 0000:00:1c.5
Under 5.2, do an lsmod and see if the drivers were loaded. Also, after the updatedb, use locate and see if the module is found.
What is the name of the audio module and driver from lsmod? I can only found soundcore as above.
Thank you so much.
Kind Regards,
Jim
HTH
Bill
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