Messages in this thread |  | | From | "Dunlap, Randy" <> | Subject | RE: [PATCH] usb audio. | Date | Fri, 13 Oct 2000 08:56:53 -0700 |
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> > > Only problem is that the sound has a lot of hickups and I > get these > > > messages in my syslog: > > > > I didn't see that. I think I _do_ have CONFIG_USB_BANDWIDTH > enabled. What > > else do you have connected and what else were you using at > the time? Does > > the kernel whinge? > > Just recompiled the USB modules with CONFIG_USB_BANDWIDTH enabled, but > that doesn't solve the problem. The audio thingy is the only device > connected, I don't have an USB hub, otherwise I would have used my > Wacom Graphire and the audio converter at the same time (my laptop has > only one USB port). FWIW, the audio converter is using a Philips UDA > 1321 chip.
CONFIG_USB_BANDWIDTH just controls whether usb_submit_urb() fails or passes based on current bandwidth usage.
You shouldn't see the <clipped> messages about bandwidth alloc increased|reduced unless you are running at console loglevel 7 or higher (KERN_DEBUG) (could be via Alt-SysRq-7). I'll see about removing them anyway.
I don't know about the sound hickups you are hearing. Tom Sailer suggested just a day or two ago something about changing the latency for the USB controller by using setpci. BTW, lspci -vv would give much more useful info than just using lspci. E.g., it would show the current latency value being used.
~Randy
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