Hi: I have recently written a bit about problems with a Motorola L Series IrDA modem. In summary, Linux IrDA reports "waiting for CST" when I try to open ircomm0, I have had to resort to software flow control, and the performance is poor. In addition, opening the device seems to have a marginal feature. I sometimes have to activate the phone IR several times. Months ago I wrote about problems with a BJC-80 printer connected through ircomm. Again I find with the recent kernels I have trouble opening the device, and often go through several power cycles to get it working. Once it does the device remains reliably open, but the throughput, with software flow control, is very poor. Extremely frustrated with the Motorola performance, and trying several variants on the pppd settings, I suddenly found the IrDA communication had gone into what I would describe as "normal". pppd worked _without_ turning off hardware flow control, when the ppp link was being established the exchanges with the ISP were fast, then telnet responsiveness was good, and file transfers approached 1kbytes/s. When I stopped pppd, I was able to "cu -l /dev/ircomm0" as I would expect to do for an Ericsson phone and type AT commands. I'm kicking myself for not trying slip at the time, but I bet it would have worked. My conclusion is that we still have a problem establishing the initial ircomm connection with some devices, and that the problem with those is similar to problems we had a year ago with almost all devices, of sorting out the modem control signals. I suspect this relates to the comments like "you have to turn the ... on before/after starting irda or it will not work". Somehow I stumbled on the right combination (workaround!) for the Motorola, but do not know how, and have not yet reproduced it :-( I'm hopeful these observations will trigger some ideas we can turn into code. Dave -- David F. Davey Associate Dean (Biomedical Sciences) Email: [EMAIL PROTECTED] Faculty of Medicine Phone: +61 2 9351 4559 Department of Physiology (F-13) Fax: +61 2 9351 5182 University of Sydney Mobile: +61 417 206 368 NSW 2006 Australia _______________________________________________ Linux-IrDA mailing list - [EMAIL PROTECTED] http://www4.pasta.cs.UiT.No/mailman/listinfo/linux-irda
