mydoghasworms's questions

Using dpkg -L <package name> I am able to obtain a list of all the files from a package, but it contains a list of directories as well, which I want to exclude.

So, for example:

dpkg -L elixir

gives me:

/.
/usr
/usr/bin
/usr/lib
/usr/lib/elixir
/usr/lib/elixir/bin
/usr/lib/elixir/bin/elixir
/usr/lib/elixir/bin/elixirc
/usr/lib/elixir/bin/iex
/usr/lib/elixir/bin/mix
/usr/lib/elixir/lib
/usr/lib/elixir/lib/eex
/usr/lib/elixir/lib/eex/ebin
/usr/lib/elixir/lib/eex/ebin/Elixir.EEx.Compiler.beam
(etc...)

I have tried excluding the directories with the following:

dpkg -L elixir |  find  -maxdepth 1 -not -type d

But that just gives the file in the current directory.

Piping the dpkg output to ls with xargs also does not seem to allow me to filter out directories.

Is there a way to identify packages, perhaps by analysing files in a package and when they were last accessed, to identify when a package was last used?

Are there perhaps existing solutions for this, maybe even part of apt already that would show me this?

It would be helpful to identify packages and applications that are rarely, or no longer, used and which could potentially be deleted from the system to free up space. (At least that's what I am trying to accomplish).

I have a Plantronics USB headset and am running Kubuntu 18.04 on a laptop.

When plugging it in, it immediately shows up in audio device and also selects it as the default.

Even so, the sound still comes through the laptop speakers.

The USB ID is 047f:c025, if that helps anything.

How can I troubleshoot and fix the problem?

I currently have a single partition on the drive housing a Mint installation.

I want to install Ubuntu on this partition but I don't want to go through the hassle of backing up and restoring my private files in /home.

(Unlike Replace Mint with Ubuntu in dual booting system, I am not asking about the apparently missing option to wipe Mint alongside Windows and install Ubuntu just on that partition, OK?)

I understand during the install I can just select the partition as the root partition and not format it, correct?

That would mean that the installation would copy the files over the Mint files but would presumably keep my private files in /home intact.

Is this a viable option? Will it result in a usable Ubuntu installation or do I actually need to format the drive?

I am thinking of installing either Ubuntu 12.04 (LTS) or waiting for 13.04 to be released.

My question is: Will all the updates that appear in the new release also be made available to the LTS release? In other words, will all the improvements to Unity, all the new features etc., be available to 12.04 as well? Or should I go for 13.04 if I want all the newest features?

I am thinking of buying a Wacom Bamboo Pen tablet for drawing with an Ubuntu installation.

I seem to remember there being settings specifically for Wacom in the Settings Manager. Is that still the case? (I am currently not on Ubuntu, so I can't verify).

The searching that I have done have brought up results in threads where people have to do manual setup (editing of config files) to get their Wacom tablets working. Is that the case or is there good support for Wacom tablets (with graphical configuration) in Ubuntu?

I am trying to update a system using an HTTPS package mirror located here:

 https://mirror.ufs.ac.za/os/linux/distros/ubuntu/ubuntu/

However, during apt-get update, I get the following message:

Packages  server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none

If you visit the site in your browser, you are warned about the site's certificate, but I trust the site, so it's not an issue for me. I assume I must be able to add this exception somewhere for apt to proceed.

Can you tell me where and how?

After reading up on various websites, I am rather confused about the ability to run Unity3D (http://unity3d.com/) web player in Native Client.

I am not sure whether it is the Unity 3D engine itself which can run in Native Client or Unity 3D Web Player.

I was hoping to find information on running the Unity 3D Web Player in Native Client in Chrome, because there are certain sites that require the Web Player, but that is available only for Windows or Mac.

Has anybody got more information on this or tried it themselves? One of the sites whose content I want to access is http://intoscience.com/.

Since upgrading to 12.10 (Xubuntu), Simple Scan is not working anymore.

I got scanning working with Xsane, but only if Simple Scan has not run before. Otherwise I have to restart the printer/scanner (HP OfficeJet J5783).

In kernel.log I see:

kernel: [ 1214.120964] usb 2-1.4: >usbfs: process 4412 (simple-scan) did not claim interface 2 before use

and in syslog

simple-scan: io/hpmud/dot4.c 172: unable to read Dot4ReverseCmd header: No data available
simple-scan: io/hpmud/musb.c 1933: invalid Dot4Credit from peripheral
simple-scan: io/hpmud/dot4.c 172: unable to read Dot4ReverseCmd header: No data available
simple-scan: io/hpmud/musb.c 1933: invalid Dot4Credit from peripheral
simple-scan: sane_hpaio_cancel: already cancelled!
simple-scan: io/hpmud/dot4.c 172: unable to read Dot4ReverseCmd header: No data available
simple-scan: io/hpmud/musb.c 1933: invalid Dot4Credit from peripheral
simple-scan: io/hpmud/dot4.c 231: unable to read Dot4ReverseReply header: No data available bytesRead=0
simple-scan: io/hpmud/dot4.c 319: invalid DOT4InitReply retrying command...
simple-scan: io/hpmud/dot4.c 172: unable to read Dot4ReverseCmd header: No data available
simple-scan: io/hpmud/musb.c 1933: invalid Dot4Credit from peripheral
simple-scan: io/hpmud/hpmud.c 342: device_cleanup: device uri=hp:/usb/Officejet_J5700_series?serial=CN81LCV0V604TC
simple-scan: io/hpmud/hpmud.c 354: device_cleanup: close device dd=1...
simple-scan: io/hpmud/hpmud.c 356: device_cleanup: done closing device dd=1

Any ideas?

I am using gsm-ussd to try and query my data balance from my 3G modem.

When I issue the commands

gsm-ussd -m /dev/ttyUSB0 '*188#'

or

gsm-ussd -m /dev/ttyUSB2 '*188#'

I get either "Device or resource busy" (when it is in used and connected) or "Unknown error (100)".

My device (Huawei E173) seems to create 3 devices in /dev, namely ttyUSB0, ttyUSB1 and ttyUSB2. None of them work, and ttyUSB1 gives a somewhat different problem, as it just give the following message:

* Wrong modem device (use -m <dev>)?
* Modem broken (no reaction to AT)

UPDATE I found the following post, but I am already doing what it says: http://mybroadband.co.za/vb/showthread.php/382977-8-ta-E173-on-openSUSE-with-USSD-setup

I have a wireless router / ADSL modem and a 3G card that I use to connect to the internet over PPP.

I want to be able to share my internet connection (ppp0) to my laptop via the wireless router. So my setup looks like this:

Desktop:

internet <=(ppp0)= desktop =(eth0)=> ADSL router

Now from my laptop, I want to connect to my ADSL router (which has built-in DHCP, not sure if that is a problem), so that I can use the internet connection on the desktop.

laptop =(wlan0)=> ADSL router => desktop => internet

Hope this makes sense.

How can I replace PulseAudio with Jack? I want to start jackd on startup either during boot or during logon instead of PulseAudio.

Not sure if this has always been the case, but I notice that only when I log in, does the computer establish a network connection (e.g. on eth0).

Is this the standard behaviour? What if I wanted the computer to connect to the network without me logging in so I can log in remotely?

Emerald is a nice window decorator, and I am using it with Compiz.

However, I see no option in the Emerald settings to make decorations translucent (i.e. blurred backgrounds), only transparent (see-through).

It would be nice to have the content behind the decorations blurred, especially for titlebars, because otherwise, when the text overlaps, it often looks confusing. You can sort of work around this with different colours, but then again, translucency is so nice!

Does such an option exist? If so, how can it be set?

Possible Duplicate:
timeout errors in apt-get update/install

I am working at a client where there is no proxy server for connecting to the internet.

I can download URLs with wget from the command line, but trying to install something with apt-get times out after a long time (that is to say, I think it eventually times out, at least it does nothing for a very long time).

How can I troubleshoot connection problems with apt-get? I don't see anything like a verbose switch in the man pages. What does apt-get use for establishing connections? (I assume not wget, because like I said, that works).

I would like to use Compiz in Xubuntu (under xfce obviously).

I have seen this tutorial: http://www.ghacks.net/2010/07/11/run-compiz-with-xfce4/

Firstly, this didn't work well for me, because when trying compiz –replace ccp & in a terminal, it tells me there is no plugin such as cpp, and the window decorations are lost right away.

Is there a reliable way to run Compiz with XFCE, please? I miss my desktop cube.

UPDATE

Thanks for the answers so far. Just running compiz --replace still causes the complete loss of window decorations.

Also, I tried fossfreedom's suggestion, and then I get the output below. I installed emerald initially because it was complaining about not finding it, but I think I had the segfault even without emerald.

(some other output)
...
/usr/bin/emerald: Screen 0 on display ":0.0" already has a decoration manager; try using the --replace option to replace the current decoration manager.
Segmentation fault
Setting Update "command"

UPDATE 2

Well, turns out that just trying to run emerald by itself ends with a segfault, and apparently this is a known bug. Used the solution here to resolve that problem: http://www.webupd8.org/2011/05/get-emerald-to-work-in-ubuntu-1104.html

Still, I wasn't actually hoping to use Emerald, but what the heck.

I have just installed Kubuntu, and I notice that Dolphin tries to access SMB shares using libsmbclient instead of mounting an SMB location like I am used to in Nautilus. Unfortunately, the performance is horrendous, and for some reason, I am unable to access shares that I could access in Nautilus (it gives me authorization issues which I didn't have in the SMB mounts).

Is there a way to mount SMB shares in Kubuntu as in Ubuntu?

(Note: I am accessing the share over a VPN, in case that makes a difference, but I don't see why it should, and in Nautilus the performance was completely accetable).