G'day Ben The issue that I mentioned is in regards to OSS, you shouldn't see the problem with ALSA.
I am surprised that you are using ALSA, as the audio quality is significantly better using OSS. I have never experienced the issue of the device not being present straight away (which should always be the case). But I am pretty sure there are no special scripts or anything like that which would delay you from seeing the device. With the newer versions of Linux (using the newer kernels), the video devices can actually be shared, unlike the OSS device, therefore there would be no reason to do any delaying, etc. Cheers, Jason. -----Original Message----- From: Ben Green [mailto:ben.gr...@manchester.ac.uk] Sent: Wednesday, 31 October 2007 8:55 PM To: Jason Bell; ag-tech; accessgri...@clix.aarnet.edu.au Subject: RE: [AG-TECH] Dropping OSS device in Rat (Linux) Hi Jason, I don't get this issue luckily, my OSS device is always there alongside the ALSA one. I use the ALSA as default. I'm running FC7. But I do see a similar issue when starting the video producer service, and it can take 10 seconds for it to recognise my video device (I just get a blank in the drop down device menu). I'm sure other people have seen this too. I would image getting vic to sleep for 10 seconds before starting would resolve this, in a similar way to how your shell script makes rat wait a bit longer before starting (I assume that's what it's doing). Cheers, Ben. |=============================| | Ben Green | | Access Grid Support Centre | | Room G49-H | | Research Computing Services | | Kilburn Building | | University of Manchester | | Oxford Road | | Manchester | | M13 9PL | |-----------------------------| | Tel. 0161 306 6621 | | Fax. 0161 275 0637 | | ben.gr...@manchester.ac.uk | | http://www.agsc.ja.net | |=============================| -----Original Message----- From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@mcs.anl.gov] On Behalf Of Jason Bell Sent: 31 October 2007 05:56 To: ag-tech; accessgri...@clix.aarnet.edu.au Subject: [AG-TECH] Dropping OSS device in Rat (Linux) G'day all This is just a quick email to see if anyone else has been experiencing an issue that I have been having lately. Basically on my "Linux" systems (Fedora Core 6 and Fedora 7), sometimes when Rat is started, the Device "OSS" device is missing in which is then defaulted to an "ALSA" device. The reason why this is an issue is the "OSS" device produces far superior audio quality, when compared to "ALSA" (Though I realize that "OSS" is just a wrapper on ASLA with the default Fedora Kernel). >From my understanding, the reason why this occurs is that, if the OSS device is in use, it then becomes unavailable and no longer displayed as a device, as OSS only allows one application exclusive access. Anyway, from doing some basic testing, it was seen that events like switching from one venue to another was causing this to happen. It appeared that if the machine was heavily loaded, this would increase the chance of this happening. Anyway, to cut a long story short, I deleted the /usr/bin/rat sym link and replaced it with a basic shell script: #! /bin/sh sleep 5 exec /usr/bin/rat-4.4.00 "$@" >From some initial testing, it appears to have fixed the issue! (More testing is required) I'm just wondering if anyone else has experienced this issue with Fedora or other Linux systems??? Thanks for your time, Jason. -------------------------------------------- Jason Bell, B.I.T. B. Info. Tech. (Honours) Student High Performance Computing Support Officer, Network Engineer Information Technology Division Central Queensland University E-mail : j.b...@cqu.edu.au Phone : 07 4930 9229 -------------------------------------------- Patience is a virtue. But if I wanted Patience, I would have become a Doctor. -------------------------------------------- _______________________________________________ accessgrid-l mailing list accessgri...@lists.grangenet.net http://lists.grangenet.net/mailman/listinfo/accessgrid-l
