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I have a big problem. Sometimes (not always), when I power on my laptop, my USB devices (mouse, keyboard and other) don't work. All devices work, indicators are on, but it doesn't work in Ubuntu.

And sometimes, when I don't use my laptop, usb devices don't work too. I came to my laptop, try to do anything, but I have not results and I have to reboot my laptop.

What can I do? Before this, when I'd used only windows 7, I didn't have this problem.

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closed as too localized by Marco Ceppi Feb 2 '12 at 23:59

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.

Sounds like a problem I've seen before where the usb system detects a hardware error and shuts down. Can you report your dmesg logs? –  Martin Owens -doctormo- Dec 14 '10 at 13:05
This actually sounds similar to the issue I have where my laptop's internal keyboard/touchpad don't work and I have to reboot (sometimes many times) to get them functioning. I think they're internally connected to PS/2 ports, but other than that it could be the same problem. askubuntu.com/questions/16813/… –  dgw Dec 15 '10 at 1:24
I don't know if this would be of help, but I have encountered a similar problem with some computers. When the system is using a usb mouse, usb keyboard, usb wireless receiver mouse setup, the system will not recognize such devices. I have resolved it by going into Bios and turning on usb legacy support on, in the Bios. –  Merlin2525 Apr 23 '11 at 18:03
This question seems abandoned, there is not further information or activity added to it for several months. I am flagging this to be closed by a moderator. If you think this issue is still affecting you you can flag a moderator to re-open it. –  Bruno Pereira Feb 2 '12 at 22:58

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