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Old 10-13-2008, 12:24 PM
"suemac@empire.net"
 
Default Ubuntu-Studio-users Digest, Vol 18, Issue 22

------------------------------

>Jussi said:

>"Which graphics card do you have? Perhaps try installing the linux-rt
>package, and the correct drivers for your graphics card"

>I believe it's an NVIDIA chipset. I think I checked when I was booted in
rt and
>it said it was using the NVIDIA drivers. (I didn't load these so I guessed
they
>came with the machine and the generic kernel.

>Active Accounts said:
>"I was going to say the same thing with respect to the network device as
well -
>most certainly a module issue between the kernels. Check the difference
between
>the loaded kernels in the generic and the rt."

I didn't check the network drivers, ran out of time. I'm not sure how to
check the differences between the loaded kernels...where does the "stuff"
that's loaded around
the kernel get defined? I'd have guessed they'd both use the same file to
define the
drivers, screen res, and such.

>Philipp said:

>"Do you use binary drivers for video with the generic kernel? You might
>need to install them for the rt-kernel as well. But beware, they might
>cause problems."

See above, how do I tell? What file defines this...sheesh, I guess I'm
gonna have
to dig up more of my unix past life than I was hoping...

>There is more than one model of the tascam, the older one should work,
>the newer one (122L ? not sure..) doesn't.

This is a older model.

Thanks,
Mac


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Old 10-13-2008, 09:16 PM
Gustin Johnson
 
Default Ubuntu-Studio-users Digest, Vol 18, Issue 22

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suemac@empire.net wrote:
> ------------------------------
>
>> Jussi said:
>
>> "Which graphics card do you have? Perhaps try installing the linux-rt
>> package, and the correct drivers for your graphics card"
>
>> I believe it's an NVIDIA chipset. I think I checked when I was booted in
> rt and
>> it said it was using the NVIDIA drivers. (I didn't load these so I guessed
> they
>> came with the machine and the generic kernel.

There are two different nVidia drivers. There is the open source 2d
only nv driver, and the 3d binary driver called nvidia. The closed
binary only driver has a kernel module that needs to be loaded, you can
check to see if it is loaded with this command:
lsmod |grep nvidia

If you get nothing back then the module is not loaded. Generally you
have to do something to get the proprietary driver installed, and you
have to install it into every kernel that you have. This is the problem
inherent with binary only drivers, and is now the reason that I now only
use Intel (their drivers are open source and included with the default
kernel, which means that you don't have to do anything to get them to
work, this is true of their video, wifi, and lan drivers too).

>
>> Active Accounts said:
>> "I was going to say the same thing with respect to the network device as
> well -
>> most certainly a module issue between the kernels. Check the difference
> between
>> the loaded kernels in the generic and the rt."
>
> I didn't check the network drivers, ran out of time. I'm not sure how to
> check the differences between the loaded kernels...where does the "stuff"
> that's loaded around
> the kernel get defined? I'd have guessed they'd both use the same file to
> define the
> drivers, screen res, and such.
>
But each kernel has its own copy of the drivers. lsmod is the utility
to tell you what modules are loaded. Drivers can be built as modules
that can be loaded and unloaded, or built directly into the kernel.
Modules are what most distros use. I am assuming that you are using the
Ubuntu Studio RT kernel and not something you downloaded from somewhere
else?

>> Philipp said:
>
>> "Do you use binary drivers for video with the generic kernel? You might
>> need to install them for the rt-kernel as well. But beware, they might
>> cause problems."

This is very true. Often the nVidia and ATI binary drivers don't play
well with RT kernels.
>
> See above, how do I tell? What file defines this...sheesh, I guess I'm
> gonna have
Maybe you did not install the restricted modules?
aptitude search linux |grep -w ^i
Should list the kernel related packages that are installed.

> to dig up more of my unix past life than I was hoping...
>
As opposed to...? Personally I enjoy leaving batch/wsh behind.

>> There is more than one model of the tascam, the older one should work,
>> the newer one (122L ? not sure..) doesn't.
>
> This is a older model.

What is the model #? Is it supported (alsa-project.org and ffado.org
have hardware compatibility lists)?
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Old 10-14-2008, 10:04 PM
Gustin Johnson
 
Default Ubuntu-Studio-users Digest, Vol 18, Issue 22

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suemac@empire.net wrote:
> Thank you for the reply.
>
> I have printed this and will check out the things you note.
>
> From the specs in the Dell docs: 256MB NVIDIA GeForce 8600M GT Intel
> Pro/Wireless 3945 802.11 a/g Mini Card Wireless

I have CC'd the list. This is useful for the archives, for other users
having similar problems, and insurance against me making mistakes. If I
screwed up (sooner or later this is likely), someone there will likely
spot and correct the mistake(s).

I have used that wireless adaptor and it is supported by Linux out of
the box (right now I am using the iwl4965 that I put into my Acer Aspire
One). IIRC it requires firmware to be loaded as well.

That video card will require the latest nVidia driver directly from the
nVidia web site. You are in for a bundle of fun. Just a tip, when
installing the nVidia package (which you will have to do for every
kernel you use), the second kernel you install to, use the -K flag so it
only builds the kernel module.

> As for the rt kernel, I got the one defined here:
> https://help.ubuntu.com/community/UbuntuStudioPreparation they
> specified the command:
>
> sudo apt-get install linux-rt
>
> I used Synatic instead of apt-get.
>
Try it again with apt-get, you may be missing dependencies. I do not
use synaptic so I have no idea what differences there are from the CLI
programs (I personally use aptitude, but I prefer the CLI for most tasks).

The other possability is that there is no /lib/firmware directory for
your rt kernel. The easiest way to solve this is to simply create a
soft link to the existing firmware directory.

sudo ln -s /lib/firmware/2.6.24-19-generic /lib/firmware/`uname -r`

Of course check the /lib/firmware directory first, to see whats there.

> As for the Tascam US-122 I followed the instructions on these alsa
> and the Ubuntu pages: http://alsa.opensrc.org/index.php/Tascam_US-122
> https://help.ubuntu.com/community/TASCAM_US-122
>
> I suspect the two have ahd me create a couple of different /firmware
> directories and I suspect there may be file access rights issues
> since some of the files are owned by root and some by my generic
> user...not sure if this poses a problem.
>
> I won't be able to look at this project again until next week.
>
> Would you mind my asking more questions later?
>
Not at all, but I strongly encourage you to use the list to do so.
There are a lot of smarter people there who can probably also help.
Since I do not have the same sound card as you, there may be someone one
the list who does. It just makes sense to use the list.

> "Personally I enjoy leaving batch/wsh behind." I have no problem
> leaving those behind as well...but, I was rather hoping to avoid
> digging into the innerds of boot scripts and such. I spent enough
> time setting up pf and such on my OpenBSD firewall a couple years
> back. That was a refresher course after not doing any uniix flavored
> stuff for 15 years before that...

Unfortunately you don't always get that choice. I have learned the hard
way to do my hardware homework so that I don't have to dig into the
innards. The flip side, is that knowing how the system is put together
allows me to bend it to my will.

In the future avoid hardware that forces you to use binary drivers. I
am a little more forgiving of binary firmware due to the legal
requirements placed on vendors here in North America (I am specifically
thinking of the Intel wireless adaptors, thanks a lot CRTC/FCC).

Hth,
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