Note

2018年12月25日星期二

failed to send WATCHDOG=1 notification message: Transport endpoint is not connected

Update ubuntu properly. Write following commands in terminal:

sudo apt-get update
update-manager

After completion update, Write following command in terminal:

reboot

Hopefully, Problem will be solved.
If the problem is still exits:

Press and Hold Power button and let the PC to turn off forcibly.
Turn on PC now, it will on perfectly.
if it throws fsck error, write command:
fsck -yf /dev/sdaX
Done

2018年12月24日星期一

Disable screen blanking on text console

$ setterm -blank 0 -powersave off

2018年12月6日星期四

How to open a .txt file and display it in a text box using VB.Net

Imports System.IO

Public Class MyForm

    ' ... Whatever code you have for your form

    Public Sub OpenFile()

        Dim oReader As StreamReader

        OpenFileDialog1.CheckFileExists = True
        OpenFileDialog1.CheckPathExists = True
        OpenFileDialog1.DefaultExt = "txt"
        OpenFileDialog1.FileName = ""
        OpenFileDialog1.Filter = "Text Files (*.txt)|*.txt|All Files (*.*)|*.*"
        OpenFileDialog1.Multiselect = False

        If OpenFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
            oReader = New StreamReader(OpenFileDialog1.FileName, True)
            RichTextBox1.Text = oReader.ReadToEnd
        End If

    End Sub

End Class

2018年12月4日星期二

BIOS中Power/APM Configuration

在電源管理（Power Management）功能選單中，選項『Restore on AC Power Loss』決定當電源不足或損壞時系統的處置方式，這個選項有「Power On」、「Power Off」、「Last State」三種選擇種，做為電源中斷或不小心意外而關機的應變方式。

「Power Off」：系統持續在關機的狀態。
「Power On」：系統會自動重新啟動。
「Last State」：設定為斷電前的狀態。（我建議）

2018年12月3日星期一

ubuntu change color of top menu bar in Unity and top menu bar in any window

How to install Ubuntu Tweak?

Hit Alt+Ctrl+T to open terminal and run following commands:
1. For Ubuntu 14.04 onwards, it's available in softxare sources, just type:
```
sudo apt-get install unity-tweak-tool
```
2. For older Ubntu releases:
```
sudo add-apt-repository ppa:tualatrix/ppa
sudo apt-get update
sudo apt-get install ubuntu-tweak
```

2018年11月28日星期三

source:https://www.redhat.com/archives/rhl-list/2004-May/msg07775.html

rhgb = redhat graphical boot - This is a GUI mode booting screen with most of the information hidden while the user sees a rotating activity icon spining and brief information as to what the computer is doing.

quiet = hides the majority of boot messages before rhgb starts. These are supposed to make the common user more comfortable. They get alarmed about seeing the kernel and initializing messages, so they hide them for their comfort.