Ubuntu 12.10 – Fix the “Waiting for network configuration” or black screen error on startup

Waiting for network configuration…
Waiting up to 60 more seconds for network configuration…

Or simply black screen on startup.

Solution:

  1. Reboot. Select Advanced options for Ubuntu and choose revovery mode.  Select Resume normal boot.
  2. Open a Terminal (Ctrl + Alt + T) and run the following command

    sudo gedit /etc/network/interfaces

  3. In the opening editor delete everything after the

    auto lo iface lo inet loopback

    line, then save the changes.

  4. Reboot and Ubuntu will start normally with working networking.

Install Video Card Driver + Fix Ubuntu Boot Animation (Ubuntu)

ubuntu_splash

Installing the Video Card Driver

  • Launch System Settings and click on Additional Drivers (under Hardware group).
  • Select the ATI/AMD proprietary FGLRX graphics driver and click install.
  • After the installer finished, Reboot.

Fixing Ubuntu Boot Animation

  • Open a Terminal
  • Execute the following command:

    gksu gedit /etc/initramfs-tools/conf.d/splash

  • Paste this line into the file:

    FRAMEBUFFER=y

  • Save the file, and then run

    sudo update-initramfs -u -k all

  • Reboot and enjoy the boot animation.

Source: askubuntu

Temporary Fix – USB ports on the right side not working (Ubuntu)

This well-known problem is due to the built-in Realtek Card Reader’s Linux driver. This issue affects other laptops as well, and is currently (in Ubuntu 12.04) unsolved.

This temporary ‘fix’ will produce the the following result:

  • The card reader will be disabled by default
  • All the USB ports (left and right side) are going to work by default
  • You will be able to enable the card reader manually
  • If you enable the card reader after connecting your devices to the USB ports on the right side, you will be able to use both the card reader and your USB devices at the same time

Here are the steps:

  • Run Terminal and execute the following command:

    sudo gedit /etc/modprobe.d/blacklist.conf

  • Add the following line to the end of the file:

    blacklist rts5139

  • Save the file and close gedit.
  • After restart, your card reader will be disabled but all the USB ports are going to fuction properly.

Use this command to temporarly enable the card reader:

sudo modprobe rts5139

And this one to disable it:

sudo rmmod rts5139

To permanently re-enable the card reader, simply remove/comment out the blacklist rts5139 entry in blacklist.conf.
Source: Daniel Walton (launchpad)

Fix – WiFi not connecting when on battery (Ubuntu)

In Ubuntu 12.04 LTS (Precise Pangolin) you may experience that you can’t connect to a hotspot if the power cable isn’t connected. It’s supposedly a bug in Ubuntu’s Energy Management module.

So here’s the workaround:

Open up a Terminal and execute the following command:

sudo gedit /etc/pm/power.d/wireless

Enter your password when asked. A notepad-like application (gedit) will pop-up with the newly created file. Paste the following code:

#!/bin/sh

/sbin/iwconfig wlan0 power off

Save the file and close gedit. Fix the file’s permissions from Terminal:

sudo chmod 777 /etc/pm/power.d/wireless

Reboot and enjoy your working WiFi.

Source: davidcortijo

Fix – Microphone not working in Skype (Ubuntu)

Skype logo

In Ubuntu 12.04 LTS (Precise Pangolin) microphone in Skype doesn’t work out-of-the-box for our device.

Fortunatelly it’s quite simple to fix:

  1. Install PulseAudio volume control from Ubuntu software center. Search for ‘pavucontrol’.
  2. Run PulseAudio volume control and select the ‘Input devices’ tab.
  3. Lower the volume on the Right channel to zero.
  4. Run Skype. Go to Options -> Sound Devices and uncheck ‘Allow Skype to automatically adjust my mixer levels’.

That’s it. Test your audio with Skype Test Service.

Source: isallmaroon

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