El Fri, 27 Jul 2012 15:25:37 +0200 Peter Laufenberg <open...@laufenberg.ch> escribió:
> >Yes, I didn't attach dmesg or usbdevs because I thought it was a > >known issue. > > > >Well, my T410 has USB 3.0 ports, but before suspend everything works: > >mouse, pendrives, SD card reader, usb 3G modem, etc. After resume > >there's no power in any usb port. > > USB 3.0 interface are capable of supplying much more power than USB > 2.0; some PCIe USB 3.0 cards have an extra power connector the way > higher-end video cards do. Unless your attached devices are actually > USB 3.0-able the extra features are useless. > > Maybe your BIOS has an option to switch them to USB 2.0 compat mode. > > -- p > Hi Peter: Yes, I know about USB 3.0. I don't use any 3.0 device. And there's no 2.0 compatibility options in bios, as fas as I know. There are one option to maintain power even in suspend mode to power devices like phones or modems, and other one for compatibility with devices like iphones, ipods, and so... I was playing with this two options but no success. With any combination, the USB port always run fine except after resume. This maybe an issue with new i3/i5/i7 T4xx/T5xx/Wxxx lenovo laptops... I don't know. In linux they work fine before and after resume. Thanks, BR
