On 2/9/07, Alan Stern <[EMAIL PROTECTED]> wrote: > On Fri, 19 Jan 2007, Jon Smirl wrote: > > > On 1/19/07, Oliver Neukum <[EMAIL PROTECTED]> wrote: > > > Hi, > > > > > > I did the dirty deed. Could you please tell me which quirky devices > > > you know of? I am afraid this list needs to be populated and there > > > are outstanding regressions in Adrian's list. > > > > ID 0471:0155 Philips Electronics PSC805 > > > > From the long thread it looks like this external audio device won't > > resume without being reset. > > I received the device in the mail today and tested it. My experience > echoes yours exactly, except that I didn't actually try to use the device > after resuming it. I presume you have tried and it doesn't work?
Device does not work after resume. But it is easy to test it just plug your PC powered speakers into the green (i think) jack. You can ignore the 5.1 support. It only took the distributions about three years to get ALSA set up correctly to work with 6 channel USB audio. I forgot about this, there is low level documentation available. http://www.linux-usb.org/Philips_PSC805_HID_Reports_1.4.pdf > > Anyway, the story is this. As far as usbcore is concerned, the device > _appears_ to work fine. It suspends and resumes okay. The device status > fetch done by finish_port_resume() succeeds. The HID driver resubmits its > interrupt URB, and the device sends back NAKs. > > But the power LED doesn't turn back on. The device behaves precisely the What looks like a power LED is not one. It is the mute button and under software control from the host so it isn't telling us anything. I originally thought it was a power LED but then figured out that it wasn't. Have you tried any kind of low level USB monitor on it? > same regardless of whether it is connected to an Intel UHCI, a VIA UHCI, > or an NEC OHCI controller. This really does appear to be a bug in the > device. Maybe it wants some special command before it will wake up > fully... but a reset works just as well. How do you explain it working on a hub, but not on a host? > This looks like a prime candidate for a quirks entry. I will create one > later on. And I'll mail the device back early next week. No hurry, keep it as long as you think it will be useful. Stick some speakers on it and check it out, it sounds way better than typical motherboard audio. Not bad for $40. > > Alan Stern > > -- Jon Smirl [EMAIL PROTECTED] ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
