USB ports not working

[mo11]

im booting Ubuntu 12.04 from my usb stick n everything was working great but then eventually the other 2 usb ports stopped responding when i plugged something in, yesterday both worked until i restarted ubuntu now its the same, i know nothings wrong with the ports cause i can plug my usb stick that has ubuntu into one of the other 2 turn on my laptop n it boots up fine but the other 2 usb ports that arent being used arent working even if i have something plugged in them before turning my laptop on, any ideas?

[david98]

Try the following commands to see what output you get. gksudo lshw | less and lsusb with at least 1 usb device connected.

[mo11]

Try the following commands to see what output you get. gksudo lshw | less and lsusb with at least 1 usb device connected.

only shows the 1 connected with Ubuntu on it, shows nothin for the other one i had connected

[mörgæs]

How does a live boot of 14.04 work?

[sandyd]

Moved to Absolute Beginners Section

[mo11]

How does a live boot of 14.04 work?

r u asking if the usb ports work in 14.04? i tried n no they're still refusing to work for some reason, by some miracle a few days ago they worked, then i restart n nothing

[llamabr]

Try disabling the usb2 module:

sudo rmmod ehci-hcd

Then, plug your usb in, count to 15, and do:

dmesg | tail

and post the output

[mo11]

Try disabling the usb2 module:

sudo rmmod ehci-hcd

Then, plug your usb in, count to 15, and do:

dmesg | tail

and post the output

for the sudo rmmod ehci-hcd it said "ERROR: Module ehci_hcd does not exist in /proc/modules"

[geral-k]

@llamabr: You cannot disable the USB modules when using the latest kernels, because they are now built-in.

[llamabr]

@llamabr: You cannot disable the USB modules when using the latest kernels, because they are now built-in.

Thanks, Ubuntu, for dumbing down something I love a little bit more.