On Thu, 11 Oct 2012, Gian-Carlo Pascutto wrote:

> I noticed that sometimes when booting the USB subsystem already behaves
> erratically. For example this morning I'm greeted by:
> 
> [  234.455604] ohci_hcd 0000:00:04.0: urb ffff8801296fac80 path 4 ep1in
> 93120000 cc 9 --> status -121
> [  234.466567] ohci_hcd 0000:00:04.0: urb ffff88010ce362c0 path 4 ep1in
> 92120000 cc 9 --> status -121
> 
> which keeps repeating infinitely.
> 
> I've also seen:
> 
> Oct  8 08:52:37 denebix kernel: [  358.482780] ohci_hcd 0000:00:04.0:
> GetStatus roothub.portstatus [3] = 0x00130301 PRSC PESC CSC LSDA PPS CCS
> Oct  8 08:52:37 denebix kernel: [  358.482808] hub 4-0:1.0: unable to
> enumerate USB device on port 4
> Oct  8 08:52:37 denebix kernel: [  358.482823] hub 4-0:1.0: state 7
> ports 6 chg 0000 evt 0010
> Oct  8 08:52:37 denebix kernel: [  358.482837] ohci_hcd 0000:00:04.0:
> GetStatus roothub.portstatus [3] = 0x00030301 PESC CSC LSDA PPS CCS
> Oct  8 08:52:37 denebix kernel: [  358.482851] hub 4-0:1.0: port 4,
> status 0301, change 0003, 1.5 Mb/s
> 
> which also repeats infinitely.
> 
> Maybe my hardware/chipset is just crap?

I don't know, maybe.  Maybe that's just a bad cable connection (this 
includes the possibility of bad connections inside the PC case).

Alan Stern

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