Hello,
After finally succeeding in building and installing for my target kernel, I
get to the tricky stuff : getting sound ...
When ossplay indicated no driver loaded for /dev/dsp, I ran ossinfo -v3 and
got
Version info: OSS 4.2 (b 2004/201102091209) (0x00040100) GPL
Platform: Linux/i686 2.6.34.7-ELinOS-146 #5 PREEMPT Fri Feb 11 08:42:48 CET
2011 (128.1.1.5)
Number of audio devices: 0
Number of audio engines: 0
Number of mixer devices: 0
Device objects
0: osscore0 OSS core services
Mixer devices
Audio devices
Nodes
lspci -s 1b -vnn yields the following :
00:1b.0 Audio device [0403]: Intel Corporation Device [8086:811b] (rev 07)
Subsystem: Intel Corporation Device [8086:8119]
Flags: bus master, fast devsel, latency 0, IRQ 10
Memory at dff3c000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Suspecting an unsupported variant of the chipset, I compared the alsa
hda_intel source against the oss4 devlists and found the the following
devices
(pciid) that are not supported by OSS4:
/* ICH 6..10 */
...
{ PCI_DEVICE(0x8086, 0x2911), .driver_data = AZX_DRIVER_ICH },
...
/* PCH */
...
{ PCI_DEVICE(0x8086, 0x3b57), .driver_data = AZX_DRIVER_ICH },
/* CPT */
{ PCI_DEVICE(0x8086, 0x1c20), .driver_data = AZX_DRIVER_PCH },
/* SCH */
{ PCI_DEVICE(0x8086, 0x811b), .driver_data = AZX_DRIVER_SCH },
Can they be simply added to devlists or do I need to add other modifications
? Restart soundon, reinstall with make or recompile completely ?
The alsa source seems to treat the SCH exactly as the PCH,
except for HDA snooping, which it will enable at init.
As I am not familiar with HD audio, can someone indicate if this feature is
necessary ?
Thanks a lot for any help,
Sven.
P.S. If this list is considered inapproprate for these questions, please
tell me ...
Sven Biebaut
+32 2 391 2362
sven.bieb...@be.thalesgroup.com
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