USB Devices not working in Linux

USB Devices not working with Ubuntu 14.0 (Vivid) Linux

Hardware : Acer Laptop

Operating System : Zorin 10 Core 64 bit ubuntu based

After changing the operating system from Windows8.1 to Zorin 10 in Acer Laptop, I found that the USB ports stopped working. After troubleshooting for a while found that the below steps solves the problem.

Edit the /etc/default/grub file and change the GRUB_CMDLINE_LINUX_DEFAULT line to add the usbcore.autosuspend=-1 option:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash usbcore.autosuspend=-1"

Save and close the file.

Update the grub : sudo grub-update

And then reboot.

After reboot check the following:

cat /sys/module/usbcore/parameters/autosuspend

It should display -1

And finally the USB ports working. This may be helpful for you.



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