On Sunday 16 June 2002 1:47 am, Georg Acher wrote:
> On Sat, Jun 15, 2002 at 10:52:14PM +0200, Duncan Sands wrote:
> > kernel 2.4.19-pre10 (observed with other 2.4 kernels also), usb-uhci
> > USB Controller: VIA Technologies, Inc. UHCI USB (rev 04)
> >
> > Summary: system slows to a crawl, syslog fills up with (just a sample)
> >
> > usbdevfs: USBDEVFS_CONTROL failed dev 3 rqt 128 rq 6 len 490 ret -110
> > usb_control/bulk_msg: timeout
> > usb-uhci.c: interrupt, status 2, frame# 1349
>
> According to the syslog, the timeout messages forn control transfers appear
> very fast. So I wonder what the timeout setting actually is and if it is a
> useful value. Does this happen only with usb-uhci or also with uhci?
Hi Georg, thanks for answering. Things are different with uhci. I get similar
messages, but only a few hundred (rather than an infinite number). For example,
16:04:10 kernel: usbdevfs: USBDEVFS_CONTROL failed dev 3 rqt 128 rq 6 len 490 ret -110
16:04:10 kernel: usbdevfs: USBDEVFS_BULK failed dev 2 ep 0x7 len 106 ret -110
16:04:10 kernel: usb_control/bulk_msg: timeout
I don't get any "usb-uhci.c: interrupt, status 2, frame# 1349" type messages.
However, after these messages stop, all is not well. For example, if I do
cat /proc/bus/usb/devices then I get messages saying
"usb.c: error getting string descriptor 0 (error=-110)". Here is what appears
on screen (just the last bit, the bit where the errors show):
I: If#= 1 Alt= 3 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=usbdevfs
E: Ad=06(O) Atr=02(Bulk) MxPS= 16 Ivl=0ms
E: Ad=07(O) Atr=02(Bulk) MxPS= 16 Ivl=0ms
E: Ad=87(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
E: Ad=05(O) Atr=02(Bulk) MxPS= 8 Ivl=0musb.c: error getting string descriptor 0
(error=-110)
usb.c: error getting string descriptor 0 (error=-110)
usb.c: error getting string descriptor 0 (error=-110)
s
E: Ad=85(I) Atr=02(Bulk) MxPS= 8 Ivl=0ms
usb.c: error getting string descriptor 0 (error=-110)
usb.c: error getting string descriptor 0 (error=-110)
usb.c: error getting string descriptor 0 (error=-110)
and there are a couple of
kernel: usbdevfs: USBDEVFS_BULK failed dev 2 ep 0x7 len 106 ret -110
kernel: usbdevfs: USBDEVFS_BULK failed dev 2 ep 0x7 len 106 ret -110
messages in the log.
As before, I had my Alcatel USB modem plugged in (plugged in
when booting), then plugged in a Philips Toucam Pro webcam.
All the best,
Duncan.
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