| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | Linux 2.4 Sound Changes |
| 2 | 2000-September-25 |
| 3 | Christoph Hellwig, <hch@infradead.org> |
| 4 | |
| 5 | |
| 6 | |
| 7 | === isapnp support |
| 8 | |
| 9 | The Linux 2.4 Kernel does have reliable in-kernel isapnp support. |
| 10 | Some drivers (sb.o, ad1816.o awe_wave.o) do now support automatically |
| 11 | detecting and configuring isapnp devices. |
| 12 | If you have a not yet supported isapnp soundcard, mail me the content |
| 13 | of '/proc/isapnp' on your system and some information about your card |
| 14 | and its driver(s) so I can try to get isapnp working for it. |
| 15 | |
| 16 | |
| 17 | |
| 18 | === soundcard resources on kernel commandline |
| 19 | |
| 20 | Before Linux 2.4 you had to specify the resources for sounddrivers |
| 21 | statically linked into the kernel at compile time |
| 22 | (in make config/menuconfig/xconfig). In Linux 2.4 the resources are |
| 23 | now specified at the boot-time kernel commandline (e.g. the lilo |
| 24 | 'append=' line or everything that's after the kernel name in grub). |
| 25 | Read the Configure.help entry for your card for the parameters. |
| 26 | |
| 27 | |
| 28 | === softoss is gone |
| 29 | |
| 30 | In Linux 2.4 the softoss in-kernel software synthesizer is no more aviable. |
| 31 | Use a user space software synthesizer like timidity instead. |
| 32 | |
| 33 | |
| 34 | |
| 35 | === /dev/sndstat and /proc/sound are gone |
| 36 | |
| 37 | In older Linux versions those files exported some information about the |
| 38 | OSS/Free configuration to userspace. In Linux 2.3 they were removed because |
| 39 | they did not support the growing number of pci soundcards and there were |
| 40 | some general problems with this interface. |
| 41 | |
| 42 | |