Hi,
I have a laptop with Realtek ALC268 codec connected to Intel HDA controller. The laptop is Compal OEM, specific module currently unknown (it's assembled by a local reseller as Ordi Enduro 7300BF).
2.6.22 didn't much understand the codec. 2.6.23-rc1 seems to know much more about it and it almost works - but not quite. On bootup, the following line is in dmesg: hda_codec: Unknown model for ALC268, trying auto-probe from BIOS... It initializes fine but the sound is so quiet that I can only hear it with active speakers when I turn the volume to max. No mixer sliders can make it louder. Additionally, there are some strange mixer switches like Off-hook and Caller ID.
The only strings identifying the base board are from dmidecode: Handle 0x0002, DMI type 2, 8 bytes Base Board Information Manufacturer: COMPAL Product Name: IFT00 Version: REFERENCE Serial Number: N/A
Additionally, the system has identified most PCI devices by subsystem vendor & ID 14c0:0023, like this: 00:1b.0 0403: 8086:284b (rev 03) Subsystem: 14c0:0023 Flags: bus master, fast devsel, latency 0, IRQ 23 Memory at f8400000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [70] Express Unknown type IRQ 0
ls -lR /proc/asound/Intel/: /proc/asound/Intel/: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 codec#0 -r--r--r-- 1 root root 0 2007-07-28 17:26 codec#1 -r--r--r-- 1 root root 0 2007-07-28 17:26 id -rw-r--r-- 1 root root 0 2007-07-28 17:26 oss_mixer dr-xr-xr-x 4 root root 0 2007-07-28 17:26 pcm0c dr-xr-xr-x 3 root root 0 2007-07-28 17:26 pcm0p dr-xr-xr-x 4 root root 0 2007-07-28 17:26 pcm2c dr-xr-xr-x 3 root root 0 2007-07-28 17:26 pcm6c dr-xr-xr-x 3 root root 0 2007-07-28 17:26 pcm6p
/proc/asound/Intel/pcm0c: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 info -rw-r--r-- 1 root root 0 2007-07-28 17:26 oss dr-xr-xr-x 2 root root 0 2007-07-28 17:26 sub0 dr-xr-xr-x 2 root root 0 2007-07-28 17:26 sub1
/proc/asound/Intel/pcm0c/sub0: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 hw_params -r--r--r-- 1 root root 0 2007-07-28 17:26 info -rw-r--r-- 1 root root 0 2007-07-28 17:26 prealloc -r--r--r-- 1 root root 0 2007-07-28 17:26 prealloc_max -r--r--r-- 1 root root 0 2007-07-28 17:26 status -r--r--r-- 1 root root 0 2007-07-28 17:26 sw_params
/proc/asound/Intel/pcm0c/sub1: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 hw_params -r--r--r-- 1 root root 0 2007-07-28 17:26 info -rw-r--r-- 1 root root 0 2007-07-28 17:26 prealloc -r--r--r-- 1 root root 0 2007-07-28 17:26 prealloc_max -r--r--r-- 1 root root 0 2007-07-28 17:26 status -r--r--r-- 1 root root 0 2007-07-28 17:26 sw_params
/proc/asound/Intel/pcm0p: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 info -rw-r--r-- 1 root root 0 2007-07-28 17:26 oss dr-xr-xr-x 2 root root 0 2007-07-28 17:26 sub0
/proc/asound/Intel/pcm0p/sub0: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 hw_params -r--r--r-- 1 root root 0 2007-07-28 17:26 info -rw-r--r-- 1 root root 0 2007-07-28 17:26 prealloc -r--r--r-- 1 root root 0 2007-07-28 17:26 prealloc_max -r--r--r-- 1 root root 0 2007-07-28 17:26 status -r--r--r-- 1 root root 0 2007-07-28 17:26 sw_params
/proc/asound/Intel/pcm2c: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 info dr-xr-xr-x 2 root root 0 2007-07-28 17:26 sub0 dr-xr-xr-x 2 root root 0 2007-07-28 17:26 sub1
/proc/asound/Intel/pcm2c/sub0: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 hw_params -r--r--r-- 1 root root 0 2007-07-28 17:26 info -rw-r--r-- 1 root root 0 2007-07-28 17:26 prealloc -r--r--r-- 1 root root 0 2007-07-28 17:26 prealloc_max -r--r--r-- 1 root root 0 2007-07-28 17:26 status -r--r--r-- 1 root root 0 2007-07-28 17:26 sw_params
/proc/asound/Intel/pcm2c/sub1: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 hw_params -r--r--r-- 1 root root 0 2007-07-28 17:26 info -rw-r--r-- 1 root root 0 2007-07-28 17:26 prealloc -r--r--r-- 1 root root 0 2007-07-28 17:26 prealloc_max -r--r--r-- 1 root root 0 2007-07-28 17:26 status -r--r--r-- 1 root root 0 2007-07-28 17:26 sw_params
/proc/asound/Intel/pcm6c: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 info dr-xr-xr-x 2 root root 0 2007-07-28 17:26 sub0
/proc/asound/Intel/pcm6c/sub0: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 hw_params -r--r--r-- 1 root root 0 2007-07-28 17:26 info -rw-r--r-- 1 root root 0 2007-07-28 17:26 prealloc -r--r--r-- 1 root root 0 2007-07-28 17:26 prealloc_max -r--r--r-- 1 root root 0 2007-07-28 17:26 status -r--r--r-- 1 root root 0 2007-07-28 17:26 sw_params
/proc/asound/Intel/pcm6p: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 info dr-xr-xr-x 2 root root 0 2007-07-28 17:26 sub0
/proc/asound/Intel/pcm6p/sub0: total 0 -r--r--r-- 1 root root 0 2007-07-28 17:26 hw_params -r--r--r-- 1 root root 0 2007-07-28 17:26 info -rw-r--r-- 1 root root 0 2007-07-28 17:26 prealloc -r--r--r-- 1 root root 0 2007-07-28 17:26 prealloc_max -r--r--r-- 1 root root 0 2007-07-28 17:26 status -r--r--r-- 1 root root 0 2007-07-28 17:26 sw_params
amixer controls gives the following output:
numid=4,iface=MIXER,name='Headphone Playback Switch' ; type=BOOLEAN,access=rw------,values=2 : values=on,on numid=3,iface=MIXER,name='Headphone Playback Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=64,step=0 : values=45,45 | dBscale-min=-64.00dB,step=1.00dB,mute=0 numid=13,iface=MIXER,name='PCM Playback Volume' ; type=INTEGER,access=rw---RW-,values=2,min=0,max=255,step=0 : values=255,255 | dBscale-min=-51.00dB,step=0.20dB,mute=0 numid=2,iface=MIXER,name='Front Playback Switch' ; type=BOOLEAN,access=rw------,values=2 : values=on,on numid=1,iface=MIXER,name='Front Playback Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=64,step=0 : values=52,52 | dBscale-min=-64.00dB,step=1.00dB,mute=0 numid=6,iface=MIXER,name='Capture Switch' ; type=BOOLEAN,access=rw------,values=2 : values=on,on numid=8,iface=MIXER,name='Capture Switch',index=1 ; type=BOOLEAN,access=rw------,values=2 : values=on,on numid=5,iface=MIXER,name='Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=31,step=0 : values=1,1 | dBscale-min=-16.50dB,step=1.50dB,mute=0 numid=7,iface=MIXER,name='Capture Volume',index=1 ; type=INTEGER,access=rw---R--,values=2,min=0,max=31,step=0 : values=1,1 | dBscale-min=-16.50dB,step=1.50dB,mute=0 numid=12,iface=MIXER,name='Caller ID Switch' ; type=BOOLEAN,access=rw------,values=1 : values=on numid=14,iface=MIXER,name='Digital Capture Volume' ; type=INTEGER,access=rw---RW-,values=2,min=0,max=120,step=0 : values=60,60 | dBscale-min=-30.00dB,step=0.50dB,mute=0 numid=9,iface=MIXER,name='Input Source' ; type=ENUMERATED,access=rw------,values=1,items=2 ; Item #0 'Mic' ; Item #1 'Front Mic' : values=0 numid=10,iface=MIXER,name='Input Source',index=1 ; type=ENUMERATED,access=rw------,values=1,items=2 ; Item #0 'Mic' ; Item #1 'Front Mic' : values=0 numid=11,iface=MIXER,name='Off-hook Switch' ; type=BOOLEAN,access=rw------,values=1 : values=off