Arch Linux

windxa

Member

Registered: 2015-10-18

Posts: 8

[Solved] Recent upgrade makes wireless adapter disabled

I upgraded with

 pacman -Syu 

However, after rebooting, the wireless usb adapter is not able to detected from ifconfig

I'm using RTL8188cus

Could anyone help? Thanks!

Last edited by windxa (2015-10-30 21:38:36)

LCvanDinteren

Member

From: Netherlands

Registered: 2015-10-27

Posts: 153

Re: [Solved] Recent upgrade makes wireless adapter disabled

Supplying more information would be helpful.
Log-files, device info

windxa

Member

Registered: 2015-10-18

Posts: 8

Re: [Solved] Recent upgrade makes wireless adapter disabled

Supplying more information would be helpful.
Log-files, device info

thanks for your reply. What log file should I provide specifically?

The device is

Bus 003 Device 002: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter

from lsusb

LCvanDinteren

Member

From: Netherlands

Registered: 2015-10-27

Posts: 153

Re: [Solved] Recent upgrade makes wireless adapter disabled

I'm not sure, try looking in /var/log/syslog or dmesg
grep on terms like Network, network, Wireless, wireless as grep is case-sensitive.

LCvanDinteren

Member

From: Netherlands

Registered: 2015-10-27

Posts: 153

Re: [Solved] Recent upgrade makes wireless adapter disabled

Following links might containt some extra info:
Wireless network configuration
Network manager

windxa

Member

Registered: 2015-10-18

Posts: 8

Re: [Solved] Recent upgrade makes wireless adapter disabled

I'm not sure, try looking in /var/log/syslog or dmesg
grep on terms like Network, network, Wireless, wireless as grep is case-sensitive.

Thanks. Actually I did not find any useful information there...

because I'm using another computer to post, I cannot paste the log here. Sorry..

chamber

Member

From: ~/

Registered: 2012-03-29

Posts: 279

Re: [Solved] Recent upgrade makes wireless adapter disabled

https://aur.archlinux.org/packages/8192cu-dkms/

---

meh

Starfish

Member

From: Germany

Registered: 2015-10-21

Posts: 134

Re: [Solved] Recent upgrade makes wireless adapter disabled

Could you post the output of

lspci

and

ip link

?

---

"Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the present." - Master Oogway

windxa

Member

Registered: 2015-10-18

Posts: 8

Re: [Solved] Recent upgrade makes wireless adapter disabled

https://aur.archlinux.org/packages/8192cu-dkms/

Thank you. Finally I solved it by re-installing the rtl8188cus driver.

I downloaded the source code from AUR page, but it seems that is not compatible with my Linux 4.2.4-1-ARCH. After reading the discussion on the AUR page https://aur.archlinux.org/packages/8192cu-dkms/, I got the latest code from github https://github.com/dz0ny/rt8192cu. Compile and install it, reboot. And now the problem is solved.

Thank you for all your help.

One more question: will some update operation, e.g. pacman -Syu, which updates the kernel as well, affect some drivers? I mean, next time I update my system, would this problem come again? I used to work with debian and ubuntu and system update seems never to affect drivers or so.

Last edited by windxa (2015-10-30 21:40:24)

LCvanDinteren

Member

From: Netherlands

Registered: 2015-10-27

Posts: 153

Re: [Solved] Recent upgrade makes wireless adapter disabled

each update can bring trouble so there will probably someday come an update which makes your drivers incompatible or something, but as long as the drivers are maintained as well the developers should keep it compatible with arch