Arch Linux Laptop Full System Upgrade

pacman -Syu complained removing fontsproto for dependency issue. Here's what I did. pacman -S xorg xorg-apps because these are whose requiring fontproto. Then update system with answering no to replacing packages. After system update again with answering yes to replacing packages.

Arch Linux Wifi Setup

Setting up wifi on Arch Linux Laptop

archlinux wiki reference

Setting up Manually

• Show network interface
  
  • iw dev
• Show network interface status
  
  • iw dev $interface link
• Activate interface (if necessary)
  
  • ip link set $interface up
  • ip link show $interface check it’s up
• Discover access points (if you don’t know the SSID)
  
  • iw dev $interface scan | less
• Connect to an AP
  
  • use wpa_suppicant

Connect to AP with wpa_supplicant

• Configure settings with wpa_passphrase
  
  • wpa_passphrase MYSSID passphrase > /etc/wpa_supplicant/my_config.conf
• Connect
  
  • wpa_supplicant -B -i interface -c /etc/wpa_supplicant/my_config.conf
  • dhcpcd interface
    start dhcp to get ip address (if wpa_supplicant run successful dhcp may work automatically and interface card obtain ip address)

Caution

If you already setup wpa_supplicant as startup service or run several times you can see several process running by ps aux | grep wpa_supplicant. In this situation wpa_supplicant command will not work correctly. Kill all wpa_supplicant process by killall wpa_supplicant before configuration.

Setting up Startup Service

• systemctl enable wpa_supplicant@interface.service
• systemctl enable dhcpcd@interface

Actually this set up didn’t work for me at first.
It seems I set up before using automatic setting with netctl. I can see right now by systemctl and netctl-auto@interface.service and dhcpcd@interface.service are there. It seems that two different network service running is the cause of problem.

So I disable it by systemctl disable netctl-auto@interface.

Then after rebooted, it’s working now!
Phew…

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