Ubuntu 9.10 Headphone Jack Troubleshooting on Gateway laptop

I am using a Gateway M6862 laptop and the sound card worked pretty well under Ubuntu 8.04. However, after I installed a Ubuntu 9.10, the front headphone jack stop working. After troubleshooting for a while.  The solution is quite simple.

Append the following line at the end of /etc/modprobe.d/alsa-base.conf

options snd-hda-intel model=eapd probe_mask=1 position_fix=1

The reason is quite simple. The latest ALSA driver update introduced new bugs. The consequence is that the drive can not correctly detect your sound card chip. Therefore, we have to tell the driver from modprobe.

aplay -l

**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: ATI HDMI [ATI HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0

lspci -v

00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
Subsystem: Gateway 2000 Device 0562
Flags: bus master, fast devsel, latency 0, IRQ 22
Memory at f3300000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel

Ubuntu 9.10 Dual Screen Resolution Problme[Solved]

I just installed Ubuntu 9.10 yesterday. The only problem is that 9.10 fail to detect my dual monitors; therefore, the resolution of my two monitors were set to 1024*768 by default. I spent one day to complete solve this problem. My graphic card is a ATI one. You may skip this page if your graphic card is not ATI. Here’s how.

1. Download ATI driver from Ubuntu Hardware Driver setting. Run the following command.

sudo amdcccle

2. Set correct resolution for both screen. (1280*800 and 1600*1200 for me). It was weird at the beginning, because ATI control center only allowed me to set my second monitor to 1280*800. I solved this problem by unplugging the monitor and reboot my box(Maybe).

3. (Optional) Revert the screen location. My second monitor is on my right hand side. I tried to set the screen position in AIT control center. But the control center always crash after I apply the change. I have no option but changing xorg.conf manually.

Section “Monitor”
Identifier   “0-LCD”
Option      “VendorName” “ATI Proprietary Driver”
Option      “ModelName” “Generic Autodetecting Monitor”
Option      “DPMS” “true”
Option      “PreferredMode” “1280×800″
Option      “TargetRefresh” “60″
Option      “Position” “0 0″
Option      “Rotate” “normal”
Option      “Disable” “false”
EndSection

Section “Monitor”
Identifier   “0-CRT1″
Option      “VendorName” “ATI Proprietary Driver”
Option      “ModelName” “Generic Autodetecting Monitor”
Option      “DPMS” “true”
Option      “PreferredMode” “1600×1200″
Option      “TargetRefresh” “60″
Option      “Position” “1280 0″
Option      “Rotate” “normal”
Option      “Disable” “false”
EndSection

The position option indicates the start point of a screen.

All Done!

 

 

 

xkeycaps, Very good keyboard testing and mapping tool

sudo apt-get install xkeycaps

1. test you keyborad

2. output key map to a xmodmap file

Using Texmaker to write Latex document on Ubuntu

In order to run Texmaker under Ubuntu. You need to install the following packets.

sudo apt-get install texmaker

sudo apt-get install texlive-latex-base

sudo apt-get install texlive

sudo apt-get install texlive-latex-extra

After that. you will be able to write Latex file in texmaker and generate pdf file.

Ubuntu Stardict With Sound And HTML Parser

The default installation of stardict do not support sound and HTML dicts.

you need to install stardict-plugin package and download WyabdcRealPeopleTTS . Put those sound files in /usr/share/WyabdcRealPeopleTTS then chenge stardict sound sitting-> command  from play to aplay

Enjoy

Ubuntu Samsung 933SN Dual Monitor Vartual Desktop ATI Configration

First, backup your /etc/X11/xorg.conf

Then, sudo dpkg-reconfigure xserver-xorg  This command reconfigures xorg.

Then, reboot the system. Your ubuntu should be able to recognize your monitor but not in right resolution

in system->Administration->Hardware Device. Select ati driver. Reboot again.

Make sure in your xorg.conf contains the following info

Section “Screen”
#add these three lines
SubSection “Display”

Virtual   2640 1568  #2640=1200+1340 1568=800+768 which is my two monitors resolution
EndSubSection

#———————————
Identifier “Default Screen”
Device     “Configured Video Device”
Monitor    “Configured Monitor”
DefaultDepth     24
EndSection

Reboot again. I spent 2+ hours to make everything right. Here is my xorg.conf file. I use default ubuntu ati driver.  It takes time, be patient

Ubuntu 8.10 can not shutdown, freeze in alsa

Put:

ifconfig wlan0 down

at the beginning of stop in: /etc/init.d/alsa-utils