FAQs about Ubuntu

FAQs about Ubuntu

1. My Vaio Fit15e wireless network card is BCM43142. It took a long time to install the driver after installing Ubuntu, because this network card could not find the driver on the Broadcom official website, and google made a huge circle, the simplest command can solve this problem.

Sudo apt-get install bcmwl-kernel-source

2. I want to change the default startup Item to Win7 for Windows 7 and Ubuntu, and want to modify grub.

Sudo vi/boot/grub. cfg

You can see that the startup item can be set here, but we do not recommend that you modify it here. It is generated by the other two files.

Sudo vi/etc/default/grub

Here, the DEFAULT start value starts from 0 (GRUB-DEFAULT = 0). In my computer, there are 5th Win7 boot items, so you can change '0' to '4 ',

In the grub. d folder, disable two startup items (3rd and 4th) related to memory test and change '20_mem * 'to a specific folder.

Cd/etc/grub. dls-lsudo chmod-x 20_mem * sudo update-grubsudo shutdown-r now