sawa's questions

I have my custom script in Ruby with read permission, which starts with:

#!/usr/bin/env ruby

I can run that script from the terminal by typing that path. I added a file with .desktop extention to /usr/share/applications with content

[Desktop Entry]
Name=Foo
Comment=Foo
Exec=/path/to/the/script
Terminal=false
Type=Application
Categories=Utility;Application;

and permission 777. When I open the Ubuntu file/application searcher at the top-left corner, I find my script by typing in the name. But when I click on it, it does not run. What am I doing wrong?

I have a Ruby script, which starts a server and opens a browser. It runs without any problems when called from terminal, but when I try to add a launcher to the top bar of the classic GNOME desktop, with the properties set as in the picture below, and click on it, the program does not run.

How can I add a launcher to the tap bar?

I have Dropbox Nautilus sync running. I want to programmatically pause sync, then do something to the directory, and then resume sync again. Is there a way to pause and resume Dropbox Nautilus sync from the command line?

How can I modify the panel (in classic Gnome mode) such as adding items, moving, etc. in Ubuntu 12.04?

I had the same problem with an earlier version of Ubuntu here, which received an answer to press Alt while right clicking, and it worked for that version, but this does not seem to work for 12.04.

I frequently switch between two sound settings: One directly connecting an analog headphone to the computer, and another is I connect an audio device to the HDMI audio output on the monitor. I want to switch between them quickly by writing a short script to switch between the two settings. How can I do this?

Is there a way to use the Apple iPad as an external monitor for Ubuntu? I see that there are applications for that purpose for Macintosh computers.

I cannot open the preferences dialog in adobe-reader. I want to uninstall it and get rid of all the configurations. How can I do that? I installed from the binary that was provided in adobe's website. I looked for UNINSTALL file, but I could not find it. I also tried apt-get remove adobe-reader, but that did not help either.

I want to disable the pdf plugin built into Google Chrome, and use the official one by adobe. I was able to disable the built in plugin, I don't know where to get the alternative plugin. Where can I get it?

I want to uninstall acroread that I downloaded from adobe's website and installed. How can I do that?

I used to have lm-sensors and sensors-applet working correctly on Ubuntu 11.04. I just updated to Ubuntu 11.10, and lm-sensors is installed, but sensors-applet does not seem to be in the repository any more. Is there a way to still have it working?

I cannot change the name of a file/directory on the desktop through right click on the icon. The name becomes selected, but I cannot type in it. This has also happened in the past with some versions of Ubuntu. Is this a bug, or am I not doing it correctly?

I bought a composite-video-to-usb adaptor. I want to stream video game in ubuntu. How can I do that?

My environment:

• Monoprice USB Video and Audio Grabber
• Ubuntu 11.04

The relevant output of lsusb:

Bus 001 Device 011: ID 0572:262a Conexant Systems (Rockwell), Inc. 

The relevant output of sudo lshw:

    *-usb:0
         description: USB Controller
         product: 82801JI (ICH10 Family) USB UHCI Controller #4
         vendor: Intel Corporation
         physical id: 1a
         bus info: pci@0000:00:1a.0
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: uhci bus_master cap_list
         configuration: driver=uhci_hcd latency=0
         resources: irq:16 ioport:f0e0(size=32)
    *-usb:1
         description: USB Controller
         product: 82801JI (ICH10 Family) USB UHCI Controller #5
         vendor: Intel Corporation
         physical id: 1a.1
         bus info: pci@0000:00:1a.1
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: uhci bus_master cap_list
         configuration: driver=uhci_hcd latency=0
         resources: irq:21 ioport:f0c0(size=32)
    *-usb:2
         description: USB Controller
         product: 82801JI (ICH10 Family) USB UHCI Controller #6
         vendor: Intel Corporation
         physical id: 1a.2
         bus info: pci@0000:00:1a.2
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: uhci bus_master cap_list
         configuration: driver=uhci_hcd latency=0
         resources: irq:18 ioport:f0a0(size=32)
    *-usb:3
         description: USB Controller
         product: 82801JI (ICH10 Family) USB2 EHCI Controller #2
         vendor: Intel Corporation
         physical id: 1a.7
         bus info: pci@0000:00:1a.7
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: pm debug ehci bus_master cap_list
         configuration: driver=ehci_hcd latency=0
         resources: irq:18 memory:e0525c00-e0525fff
    *-multimedia
         description: Audio device
         product: 82801JI (ICH10 Family) HD Audio Controller
         vendor: Intel Corporation
         physical id: 1b
         bus info: pci@0000:00:1b.0
         version: 00
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress bus_master cap_list
         configuration: driver=HDA Intel latency=0
         resources: irq:43 memory:e0520000-e0523fff
    *-usb:4
         description: USB Controller
         product: 82801JI (ICH10 Family) USB UHCI Controller #1
         vendor: Intel Corporation
         physical id: 1d
         bus info: pci@0000:00:1d.0
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: uhci bus_master cap_list
         configuration: driver=uhci_hcd latency=0
         resources: irq:23 ioport:f080(size=32)
    *-usb:5
         description: USB Controller
         product: 82801JI (ICH10 Family) USB UHCI Controller #2
         vendor: Intel Corporation
         physical id: 1d.1
         bus info: pci@0000:00:1d.1
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: uhci bus_master cap_list
         configuration: driver=uhci_hcd latency=0
         resources: irq:19 ioport:f060(size=32)
    *-usb:6
         description: USB Controller
         product: 82801JI (ICH10 Family) USB UHCI Controller #3
         vendor: Intel Corporation
         physical id: 1d.2
         bus info: pci@0000:00:1d.2
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: uhci bus_master cap_list
         configuration: driver=uhci_hcd latency=0
         resources: irq:18 ioport:f040(size=32)
    *-usb:7
         description: USB Controller
         product: 82801JI (ICH10 Family) USB2 EHCI Controller #1
         vendor: Intel Corporation
         physical id: 1d.7
         bus info: pci@0000:00:1d.7
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: pm debug ehci bus_master cap_list
         configuration: driver=ehci_hcd latency=0
         resources: irq:23 memory:e0525800-e0525bff

The relevant output of dmesg:

[18953.220035] usb 1-1: new high speed USB device using ehci_hcd and address 6
[19964.761076] Linux video capture interface: v2.00
[19964.767112] usbcore: registered new interface driver uvcvideo
[19964.767115] USB Video Class driver (v1.0.0)

I want to upgrade the BIOS on an Intel motherboard using a program called iflash2.exe, provided by Intel, which runs only on MS-DOS.

I do not have Windows operating system, and I am trying to create a bootable USB stick that will contain MS-DOS, iflash2.exe, and related files.

I tried a program called UNetbootin, which created a bootable USB with FreeDOS, but I do not know how and where to add iflash2.exe and related files.

Can you tell me how I can do that?

When I boot, I often encounter this warning. How can I get rid of this?

The panel encountered a problem while loading "IndicatorAppletFactory::IndicatorApplet". Do you want to delete the applet from your configuration?

I use ubuntu 11.04.

In $HOME/.xsession-errors, the following part seems to be relevant.

Initializing nautilus-gdu extension

(nautilus:1490): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

** (gnome-panel:1493): WARNING **: Failed to load applet IndicatorAppletFactory::IndicatorApplet:
GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface `org.gnome.panel.applet.AppletFactory' on object at path /org/gnome/panel/applet/IndicatorAppletFactory

I am using ubuntu 11.04 from a live USB disk. I created some space on the USB for saving modifications during installation to the USB. I want the default window manager to be ubuntu classic. How can I do this?

A USB bootable drive discards all modifications made at shutdown. Is there a way to save it? If possible, how will that affect a version installed on to a different hard disk using that USB drive?

I installed Virtual MIDI Keyboard (vmpk) using apt-get install. I also have Jack control and Qsynth installed. When I open vmpk, I cannot hear the sound coming from it. How can I do the setting to let the sound come out?

Is there a way to clear up what is displayed on the shell console (in ubuntu linux) in just a single key or two? When I get flood of lines from grep and that exceeds the height of the window, I want to quickly scroll back to the position where I typed the command after the prompt. I can do so if I had opened a fresh terminal before I type the command, and just go to the initial position. But if keep using the same terminal window, I have to manually find the position. Ctrl+l is not an answer because it just scrolls, and the contents of the terminal remains. I cannot use less because the colored output of grep does not show up.