kernel-rt and ATI 4850

[Sandsound]

I'm thinking of buying a ATI 4850 and would like to hear how it plays along with the realtime kernel.

I have used Nvidia since I made the switch to Linux, but have had some problems lately, and now that ATI have made their specs. opened, perhaps it's time to try something else ?

I use UbuntuStudio as my main OS and thou realtime kernel is a must, the ability to play with some 3D apps (games and so on) would also be nice.

[thorgal]

Hej Sandsound,

It's just my opinion and habit, but I tend to not mix things:
- my DAW is only for music prod
- if I want 3D and other stuff, I just have another PC for that.

But again, it depends on what you expect from your PC : an all-in-one machine that can at times do audio stuff as well, or a dedicated system that is tuned for audio only. My experience is that 3D systems and pro audio work don't go together. However, I've seen some videos where people are using compiz-fusion in their DAW, so you never know. I prefer not being disturbed by other system issues caused by non audio related parts. It's already enough to fix audio stuff

[Sandsound]

...However, I've seen some videos where people are using compiz-fusion in their DAW, so you never know. I prefer not being disturbed by other system issues caused by non audio related parts. It's already enough to fix audio stuff

Hi Thorgal

I have never used Compiz or any other "fancy" desktop effects, but I do like to relax with a game of Neverwinter Nights (the old one), Fate and Morrowind

I know that a good graphic card might not make the audio-quality better, but it helps to have something nice to look at, and of course it also allow me to run high resolution and dual monitors.

btw. how are the e-drums coming along ?

[thorgal]

Sandsound,

I only use the integrated graphics of my mobo (the "lame" intel graphics accelerator GX3100 or something like that). The xserver-xorg-video-intel driver works very nicely with it : I have a dual monitor setup, each screen at 1680x1050, which makes a virtual wide screen at 3360x1050. Sure, the 3D performance sucks but I don't use 3D. I even disabled 2D acc because of PCI bus access. I don't have the fastest GUI in the world but it certainly looks OK to me, and most of all, the audio is rock solid.

But I see your point.

Concerning the e-drumming, I will investigate all that when I have a long vacation (probably some time this summer).

[Yeri]

I am trying to configure an ati radeon 2400 with the rt-kernel 2.6.26.8 and it still doesn't work (but I still have not dedicated too much time for the moment).

You must just download the binary package from ati and run it.. it is easy (if it works).

I'm not sure, but I think that with the default 'vesa' driver I cannot get a resolution higher than 1024x... (something like that).. that's why I am trying to configure my ati card.

Greetings.

[Sandsound]

I am trying to configure an ati radeon 2400 with the rt-kernel 2.6.26.8 and it still doesn't work (but I still have not dedicated too much time for the moment).

You must just download the binary package from ati and run it.. it is easy (if it works).

I'm not sure, but I think that with the default 'vesa' driver I cannot get a resolution higher than 1024x... (something like that).. that's why I am trying to configure my ati card.

Greetings.

Turns out that ATI's driver doesn't support realtime kernel

Damn... maybe I should have waited a bit longer before switching, but my old Nvidia 7950x2 burned out Friday, so I had to do something.
Well at least I have supported the good initiative by ATI (opening their specs), and maybe they will use the money they got from me to develop support for rt-kernel

btw. I ended up buying the 4830 instead of 4850, and it works fine with the generic kernel.

[Sandsound]

Turns out that there's a radeonhd driver I never heard about

Followed this guide :
http://www.phoronix.com/forums/showthread.php?t=9951

Now it works

[Yeri]

Turns out that there's a radeonhd driver I never heard about

Followed this guide :
http://www.phoronix.com/forums/showthread.php?t=9951

Now it works

Hi, I followed only the steps 1 and 4 (neither 2 nor 3) and now I can use higher resolutions
I finally did not do steps 2 and 3 because it seems that are related to compiz and actually I am not interested on that.
First of all, I upgraded to lenny (testing) due to missing dependencies when trying to install xserver-xorg-video-radeon and xserver-xorg-video-ati

Sandsound, thanks for the link

[Sandsound]

Sandsound, thanks for the link

Glad I could help

btw. how is Lenny for making music? does it have a realtime-kernel or did you build it yourself ?

[kaimerra]

Is the RadeonHD driver working well with the RT kernel. I have been sticking with the old stable Radeon/ati driver for stability, but if HD is ready for use I would like to upgrade.

[Yeri]

btw. how is Lenny for making music? does it have a realtime-kernel or did you build it yourself ?

I patched and compiled an rt-kernel.
There are also a few things more to do in order to tune a raw debian for audio production.
Here you can find documentation and useful links on how to do that http://wiki.linuxmusicians.com/doku.php ... figuration and http://wiki.linuxaudio.org/wiki/real_time_info

In my opinion the main advantage of using a raw debian instead of audio specific distro is that it gives me more the feeling of being able to configure everything as I want. I don't mean that with other distros you can't, but with raw debian you MUST.

I haven't still configured my midi/audio usb card, and therefore cannot give any report regarding the performance.. I hope soon I will do.

Greetings,

Gerard.

[Yeri]

Is the RadeonHD driver working well with the RT kernel. I have been sticking with the old stable Radeon/ati driver for stability, but if HD is ready for use I would like to upgrade.

I did only the ati radeon (without hd) part of the tutorial (http://www.phoronix.com/forums/showthread.php?t=9951), and it works for me with an rt-kernel .. I don't see why shouldn't work for radeonhd.. give it a try!

[Sandsound]

Is the RadeonHD driver working well with the RT kernel. I have been sticking with the old stable Radeon/ati driver for stability, but if HD is ready for use I would like to upgrade.

It depends what card you have, they have just added support for my card

Here's a list from http://www.x.org/wiki/radeonhd :

# R500 style hardware: R5xx, RV5xx, RS6xx, RS740, M52 and up
# R600 style hardware: R6xx, RV6xx, RS780, M64 and up
# R700 style hardware: RV7xx

Mine is RV7xx

[Sandsound]

I patched and compiled an rt-kernel.
There are also a few things more to do in order to tune a raw debian for audio production.
Here you can find documentation and useful links on how to do that http://wiki.linuxmusicians.com/doku.php ... figuration and http://wiki.linuxaudio.org/wiki/real_time_info

I haven't had much luck compiling a kernel

But thanks for the link, I'll have to try it again now that I have gotten a faster pc