The chips in these machines are the Realtek ALC885, or 882... device manager 
says 882, but the Ubuntu sound preferences app and RAT both see 885. From what 
I've gathered from some quick googling, it looks like this one might be 
supported in 2.6.22, but I've seen talk of mic input via ALSA not working. 
However, RAT doesn't see ALSA at all in the audio devices list, just OSS. 
Should I bite the bullet and upgrade to 8.04 just to see what happens?

--Andrew


On Wed, Apr 16, 2008 at 4:41 PM, Christoph Willing 
<[email protected]<mailto:[email protected]>> wrote:



   On 17/04/2008, at 5:33 AM, Andrew Ford wrote:



      Hi,

      I can't get RAT to work with the integrated HD audio chipset in some of 
our machines - listen works but talk doesn't. I was pretty much expecting this 
running on Linux (Ubuntu 7.10), partially since it's a known problem on 
Windows. I'm wondering if anyone has actually gotten these chipsets to work on 
any platform (is there any progress from SUMOVER as far as supporting them?)




   Andrew,

   The HD audio chipsets are something of a moving target and support for a 
particular chipset depends on the kernel version. The kernel version for 7.10 
is 2.6.22-14. The release of Ubuntu 8.04 is imminent (24th April, I believe) 
and it currently uses kernel version 2.6.24-12 so many more chipsets will be 
supported. We have at least one machine whose audio chipset is not fully 
supported by 7.10 but already works correctly with 8.04 - maybe your chipset 
will be in this category. The 8.04 beta is available via:
    http://www.ubuntu.com/testing/hardy/beta

   AccessGrid packages for 8.04 are unofficially available at the usual place - 
see the instructions for gutsy and replace "gutsy" with "hardy".


   chris




      and if not, what USB audio interfaces work well with RAT on linux? I've 
been looking at the Edirol UA-25 or 5, which are confirmed to work with the 
usb-audio module but I don't know whether RAT supports something like that. 
Anyone have any recommendations?

      --Andrew



   Christoph Willing                        +617 3365 8350
   QCIF Access Grid Manager
   University of Queensland







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