Ok, so 3.4.11 doesn't work, and the log file was from 3.5. If it's not LPM, I'm really out of ideas. I would suggest getting another USB 3.0 hub, but I know that basically the VIA chipset is the one out there, so that wouldn't be likely to help. You might go see if your USB 3.0 hub has a firmware update for it. I know other people were having problems with storage devices that stopped responding to a Set Address command after the USB storage driver tried to reset it. Maybe your issue would also go away after a firmware update? Sarah Sharp On Mon, Sep 24, 2012 at 11:23:12PM +0300, Adrian Sandu wrote: > Oh, sorry about that. Yes, that "LPM exit latency info" only appears > in my 3.5.4, just took a look at 3.4.11 and it doesn't. > > On Mon, Sep 24, 2012 at 11:13 PM, Sarah Sharp > <sarah.a.sharp@xxxxxxxxxxxxxxx> wrote: > > On Mon, Sep 24, 2012 at 09:13:42PM +0300, Adrian Sandu wrote: > >> > I'll whip up some patches that allow you to disable USB 3.0 Link PM for > >> > the VIA hub and we'll see if that helps. Or you could downgrade to the > >> > 3.4 kernel and see if that helps, since USB 3.0 Link PM went into 3.5. > >> > >> Thanks Sarah. I tried in 3.4.11 to .. about the same thing .. > >> http://d3xt3r01.tk/~dexter/usbmon.trace.txt contains a new trace. > > > > Uh, are you sure you're running 3.4.11? Because this output from the > > log snippet you sent: > > > >> 2012-09-24T21:08:57.203739+03:00 d3xt3r01 kernel: [ 249.104503] usb 2-2.2: Parent hub missing LPM exit latency info. Power management will be impacted. > > > > Is not present in the USB core until 3.5-rc1: > > > > sarah@xanatos:~/git/kernels/xhci$ git blame drivers/usb/core/hub.c > > 51e0a012 (Sarah Sharp 2012-02-20 12:02:19 -0800 214) /* All USB 3.0 must support LPM, but we need their max exit latency > > 51e0a012 (Sarah Sharp 2012-02-20 12:02:19 -0800 215) * information from the SuperSpeed Extended Capabilities BOS descriptor. > > 51e0a012 (Sarah Sharp 2012-02-20 12:02:19 -0800 216) */ > > 51e0a012 (Sarah Sharp 2012-02-20 12:02:19 -0800 217) if (!udev->bos->ss_cap) { > > 51e0a012 (Sarah Sharp 2012-02-20 12:02:19 -0800 218) dev_warn(&udev->dev, "No LPM exit latency info found. " > > 51e0a012 (Sarah Sharp 2012-02-20 12:02:19 -0800 219) "Power management will be impacted.\n"); > > 51e0a012 (Sarah Sharp 2012-02-20 12:02:19 -0800 220) return 0; > > 51e0a012 (Sarah Sharp 2012-02-20 12:02:19 -0800 221) } > > > > sarah@xanatos:~/git/kernels/xhci$ git describe --contains --match="v*" 51e0a01 > > v3.5-rc1~149^2~6^2~9 > > > > So can you double check you were running 3.4.11 on your last test? > > > > Sarah Sharp -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
