pavucontrol. (aptitude or synaptics) This is GUI PulseAudio volume control frontend.PulseAudio Volume ControlでのRecording tab (image from the same page)
SANEプロジェクトのページを見るとわかるように，GT-S620はAVASYSが公開しているドライバを別途インストールしておく必要があります。しかし，GT-S620は一般ユーザ権限でデバイスを使用することができません。これはAVASYSのドライバがサポートしているスキャナが接続された場合に，/lib/udev/rules.d/40-iscan.rulesの中で，以下の設定がなされることに起因します。
ENV{iscan_matched}="yes"通常のlibsaneがサポートしているスキャナであれば，/lib/udev/rules.d/40-libsane.rulesの中で以下の設定がなされます。ENV{libsane_matched}="yes"iscan_matchedとlibsane_matchedの違いがどこに影響するかというと，/lib/udev/rules.d/70-acl.rulesの中の以下の部分です。# USB scanners ENV{libsane_matched}=="yes", ENV{ACL_MANAGE}="1"このように，libsane_matchedがyesになっていればACL_MANAGEが1になり，結果として /dev 以下に作成されるキャラクタスペシャルファイルに一般ユーザでアクセスができるのですが，AVASYSのドライバによって認識されたスキャナはこの部分にマッチしないため，一般ユーザでの使用ができなくなっています。そこで上記該当部分にENV{iscan_matched}=="yes", ENV{ACL_MANAGE}="1"などと追記することで，一般ユーザ権限でAVASYSのドライバを経由したスキャンが可能になります。
Updating or Downgrading your Bios is pretty straight forward on Ubuntu. Ok maybe not as straight forward as double clinking to install. But not that difficult all the same.
for this guide we will be using the commandline. But that should not scare you, i have tried to make the guide as easy as possible. first we open Terminal/Application/Accessories/Terminal
Now since we will be running every command as root(as administrator), we sould need to become an admin. so that we wont need to been adding sudo infront of every command. so first copy and paste this in terminal
sudo bashhit enter and give your passwd.you will see your prompts change from
this :~$ to :~#Then we need to install Libsmbios a linux package in the Ubuntu repositories.apt-get install libsmbios-binonce installed we need to get the system ID to get hat run this in terminal
getSystemIdyou should get an output that looks like thisSystem ID: 0x0209
Service Tag: 4MV9HH1
Express Service Code: 10089895861
Product Name: XPS M1330
BIOS Version: A14
Vendor: Dell Inc.
Is Dell: 1from the above output my system ID is 0×0209. Armed with this information you now need to get the BIOS version want to upgrade / downgrade. you can get it from here.http://linux.dell.com/repo/firmware/bios-hdrs
Scroll down the list to find a directory matching the System ID from the previous step. and look for the bios version that you want to upgrade/downgrade to In my case my directory is named: system_bios_ven_0x1028_dev_0x0209_version_a14/ my system ID IS0×0209 and the version of bios i wanted was A14.
Go into this directory and download the file, “bios.hdr” and save it in your desktop.Now we load the load the dell_rbu drivermodprobe dell_rbuFor Updatingnow to update the bios we move into the directory were we saved the bios.hdr file. if you saved it in your desktop. just do thiscd $HOME/DesktopPLEASE MAKE SURE YOUR SYSTEM IS PLUGGED TO A POWER SOURCE AND NOT ON BATTERY.Then we run the update command.dellBiosUpdate -u -f ./bios.hdrif all goes well you would see the following feedbackSupported RBU type for this system: (MONOLITHIC)
Using RBU v2 driver. Initializing Driver.
Setting RBU type in v2 driver to: MONOLITHIC
Prep driver for data load.
Writing RBU data (4096bytes/dot): ............................
..............................................................
.......................
Notify driver data is finished.
Activate CMOS bit to notify BIOS that update is ready on next boot.
Update staged sucessfully. BIOS update will occur on next reboot.
make sure to do a soft reboot (not a power-cycle) after the update (shutdown -r 0)Also, in my case, the upgrading message was very simple. It worked just fine anyway. (from A12 to A17)
If you are Downgradingfor downgrading to a previous BIOS version.your downgrade command would bedellBiosUpdate --override_bios_version -u -f ./bios.hdrNow that you are done updating /downgradingwe would need to tell the system to do a cold reboot which is what is needed after doing a bios update.to do this we would need to edit the kernel line in your menu.lstrun this in terminalgksu gedit /boot/grub/menu.lst
look for the kernel linetitle Ubuntu 8.10, kernel 2.6.27-9-generic
uuid f5e0a891-61ec-434a-b935-78bc25b1542e
kernel /boot/vmlinuz-2.6.27-9-generic root=UUID=f5e0a891-61ec-434a-b935-78bc25b1542e ro quiet splash
initrd /boot/initrd.img-2.6.27-9-genericand add reboot=bios to the end of the kernel line to look like thistitle Ubuntu 8.10, kernel 2.6.27-9-generic
uuid f5e0a891-61ec-434a-b935-78bc25b1542e
kernel /boot/vmlinuz-2.6.27-9-generic root=UUID=f5e0a891-61ec-434a-b935-78bc25b1542e ro quietreboot=bios splash
initrd /boot/initrd.img-2.6.27-9-genericsave and close the text editornow you can reboot your machineonce the system restart it would display a white screen which some messages displaying what its doing. and your bios boot splash might take a while. but that is fine.once restarted. be sure to remove the “reboot=bios” from your kernel line.
In the basic setting, ubuntu can browse iso files, but it doesn't mount them under /media. This can be a problem when install softwares, especially under wine. The following is quoted:
I am taking this tip from here first you need to download two scripts for mount iso images download from here for unmount iso images download from here
Once you have these two scripts you need to change the permissions using the following commands
sudo chmod +x /home/username/mount.sh
sudo chmod +x /home/username/unmount.sh
Now you need to copy them nautilus scripts
sudo mv /home/username/mount.sh ~/.gnome2/nautilus-scripts/
sudo mv /home/username/unmount.sh ~/.gnome2/nautilus-scripts/
That’s it now you are ready for mounting and unmounting your ISO images.
from Debian Admin
Then use script context menu in nautilus. If you have an error message, check your file name and folder names where your file is set. Make sure there is no space in the names!