2012/3/26 Martin Mokrejs <mmokrejs@xxxxxxxxxxxxxxxxxx>: > Elric Fu wrote: >> 2012/3/26 Martin Mokrejs <mmokrejs@xxxxxxxxxxxxxxxxxx>: >>> Hi, >>> I tried one of the "stable" kernels with my Dell Votro 3550 laptop >>> with a USB2.0 hub connected to its eSATA/USB2.0 port. Is this a known >>> issue? Aside from removing USB suspend from the kernel, is there any >>> other way to get rid of this? >> >> The kernel is too old. The power management implementation for USB3 >> was supported from 2.6.37. You should use the lastest kernel. > > Ah, thanks. So how about disabling CONFIG_USB_SUSPEND altogether > for USB3.0 in those old kernels? I mean really to disable it in the xHCI > driver only. > > But the message I reported here is a USB2.0 connection through an > internal eSATA/USB2.0 connector on the laptop. So are we talking about > the same? Maybe you can write a negative number to /sys/bus/usb/[dev bus name]/ power/autosuspend. The negative value of autosuspend means disabling autosuspend. Best Regards, Elric Fu > > Thanks, > Martin -- 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
