6 May
2009
6 May
'09
11:43 a.m.
Following on from Ken Restivo's amazing work getting RT linux
working on the eeepc, I decided to have a go. I am using a 701,
which I have slightly overclocked using the eee.ko module
(required on my eee to boost voltage to get SD cards working
reliably YMMV).
http://code.google.com/p/eeepc-linux/
I patched the latest 2.6.29.2 kernel with the rt11 patch, and
just built it...
Running Jack with qjackctl, I can set periods to 128, full
duplex, 44100 and get no xruns. I have to set prio to 89, and
force 16 bit. Importantly, I also have to kill NetworkManager and
NetworkManagerD or I get xruns. With all this, it seems really
solid. I am running ardour with no problems.. 6 individually
recorded tracks writing to the SD card seems to work fine.
James
6 May
6 May
1:43 p.m.
Cool. I have an Eee 701 on which I installed "Ubuntu Eee" (an
unofficial buntu), and then I recompiled the "array kernel" (kernel
tweaked for the eee, "2.6.27-8.17eeepc1" I think,
<http://array.org/ubuntu/>) with the realtime patches added. I didn't
overclock - I have had no problems with SD cards.
That aside, I had a very similar experience to you: solid low-latency
audio I/O as long as I deactivate networking (I habitually just turn
off wifi from the eee-control applet). I do realtime
analysis/processing/synthesis using supercollider.
I also have an Eee using the stock Xandros which doesn't have an rt
kernel but (as long as you sudo) is surprisingly solid for realtime
audio.
Dan
2009/5/6 James Stone <jamesmstone(a)gmail.com>om>:
Following on from Ken Restivo's amazing work
getting RT linux
working on the eeepc, I decided to have a go. I am using a 701,
which I have slightly overclocked using the eee.ko module
(required on my eee to boost voltage to get SD cards working
reliably YMMV).
http://code.google.com/p/eeepc-linux/
I patched the latest 2.6.29.2 kernel with the rt11 patch, and
just built it...
Running Jack with qjackctl, I can set periods to 128, full
duplex, 44100 and get no xruns. I have to set prio to 89, and
force 16 bit. Importantly, I also have to kill NetworkManager and
NetworkManagerD or I get xruns. With all this, it seems really
solid. I am running ardour with no problems.. 6 individually
recorded tracks writing to the SD card seems to work fine.
James
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1:59 p.m.
I have an MSI Wind purring happily along using a custom-compiled
2.26.29-rc3-rt6 kernel. Main reason for not using vanilla rt Ubuntu 9.04
kernel is that we discovered having issues with hibernation. Everything
works out-of-box including webcam, wireless, standby, hibernate, compiz,
64x2 jack on internal soundcard at 48KHz (this actually breaks Pd apparently
as it cannot handle such small buffers and gets zombified :-) etc. I guess
the reason I am posting this is if anyone would like to try DISIS version I
would greatly appreciate any feedback. You can get it from
<http://ico.bukvic.net/Linux/Kernels/>. If interested, I can also upload
latest version with debugger disabled which brings the download down from
277MB to roughly 25MB...
FWIW, as an added bonus, MSI Wind laptops have a manufacturer built-in BIOS
feature allowing CPU overclocking from 1.6GHz up to 2GHz by simply pressing
fn+f10.
Ico
-----Original Message-----
From: linux-audio-user-bounces(a)lists.linuxaudio.org [mailto:linux-audio-
user-bounces(a)lists.linuxaudio.org] On Behalf Of Dan S
Sent: Wednesday, May 06, 2009 11:43 AM
To: LAU
Subject: Re: [LAU] another eeepc success story
Cool. I have an Eee 701 on which I installed "Ubuntu Eee" (an
unofficial buntu), and then I recompiled the "array kernel" (kernel
tweaked for the eee, "2.6.27-8.17eeepc1" I think,
<http://array.org/ubuntu/>) with the realtime patches added. I didn't
overclock - I have had no problems with SD cards.
That aside, I had a very similar experience to you: solid low-latency
audio I/O as long as I deactivate networking (I habitually just turn
off wifi from the eee-control applet). I do realtime
analysis/processing/synthesis using supercollider.
I also have an Eee using the stock Xandros which doesn't have an rt
kernel but (as long as you sudo) is surprisingly solid for realtime
audio.
Dan
2009/5/6 James Stone <jamesmstone(a)gmail.com>om>:
Following on from Ken Restivo's amazing work
getting RT linux
working on the eeepc, I decided to have a go. I am using a 701,
which I have slightly overclocked using the eee.ko module
(required on my eee to boost voltage to get SD cards working
reliably YMMV).
http://code.google.com/p/eeepc-linux/
I patched the latest 2.6.29.2 kernel with the rt11 patch, and
just built it...
Running Jack with qjackctl, I can set periods to 128, full
duplex, 44100 and get no xruns. I have to set prio to 89, and
force 16 bit. Importantly, I also have to kill NetworkManager and
NetworkManagerD or I get xruns. With all this, it seems really
solid. I am running ardour with no problems.. 6 individually
recorded tracks writing to the SD card seems to work fine.
James
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
--
http://www.mcld.co.uk
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2 comments
3 participants
participants (3)
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Dan S -
Ivica Ico Bukvic -
James Stone