8 Jan
2008
8 Jan
'08
6:43 a.m.
Hi there,
I guess I'll first start with a little introduction... My name is Marc
and I'm developping a small tracker targetted to the GP2x. It's based
the interface of a very well known gameboy tracker (littlesounddj) and
it runs quite well on a small machine like that. For ease of
development, demo or if people also desire to make it their platform of
choice, the tracker is also available for Windows, Mac and I decently
got a debian build working.
I'm writing because recently I received for Xmas an azus EEE. Not a very
powerful machine but a great little traveller for internet, coding and
possibly... audio. I got my tracker running on it without to much
trouble (which was to be expected since it runs fine using only one of
the GP2x proc at 200Mhz) but I face a glitching issue on my EEE. First I
thought it was due to the usual buffer configuration problems but then I
realized both VLC and Audacity glitched too on playback. It's not a
constant one.. more like here and there the audio device gets stuck (or
some process/IRQ taking over?).
It's kind of ennoying... I still have the possibility to install XP on
it, but I quite like the Xandros install and would like to know if
there's any way for me to troubleshoot/configure the installation to
provide smoother audio out. I've tried using an external usb audio
interface and noticed the same glitches.
Any advices from the gurus ?
Thanks
Marc
8 Jan
8 Jan
6:56 a.m.
On Tue, 2008-01-08 at 11:45 +0100, M-.-n wrote:
Hi there,
I guess I'll first start with a little introduction... My name is Marc
and I'm developping a small tracker targetted to the GP2x. It's based
the interface of a very well known gameboy tracker (littlesounddj) and
it runs quite well on a small machine like that. For ease of
development, demo or if people also desire to make it their platform of
choice, the tracker is also available for Windows, Mac and I decently
got a debian build working.
I'm writing because recently I received for Xmas an azus EEE. Not a very
powerful machine but a great little traveller for internet, coding and
possibly... audio. I got my tracker running on it without to much
trouble (which was to be expected since it runs fine using only one of
the GP2x proc at 200Mhz) but I face a glitching issue on my EEE. First I
thought it was due to the usual buffer configuration problems but then I
realized both VLC and Audacity glitched too on playback. It's not a
constant one.. more like here and there the audio device gets stuck (or
some process/IRQ taking over?).
It's kind of ennoying... I still have the possibility to install XP on
it, but I quite like the Xandros install and would like to know if
there's any way for me to troubleshoot/configure the installation to
provide smoother audio out. I've tried using an external usb audio
interface and noticed the same glitches.
Any advices from the gurus ?
Could be a faq. Maybe it's the cdrom drive. Check the archives for more
info on resolving it...
Cheers.
Thanks
Marc
_______________________________________________
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Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
--
Patrick Shirkey
Boost Hardware Ltd.
11:05 a.m.
On Tuesday 08 January 2008 05:55, Patrick Shirkey wrote:
Could be a faq. Maybe it's the cdrom drive.
While checking the Eee FAQ is probably useful, it's a cheap, tiny
flash-based laptop and has no optical drive. If the audio issues can
be worked out it might be a nice tool for gigging or field recording
(or tracker composition, as with Marc's program) as long as you don't
want to do much DSP.
http://www.notebookreview.com/default.asp?newsID=4055 (review)
http://laptoplogic.com/resources/detail.php?id=84 (shows scale)
On the eeeuser forums (where Marc seems to have posted his question as
well) there are people having the same sound issue in XP, so
installing XP may not help. Sadly, it sounds to me like Microsoft
will be offering Asus a deeply discounted XP in order to stop them
preinstalling Linux, so future iterations of the device may not be as
Linux-friendly.
Rob
11:13 a.m.
After trying a lot of things today (I still have a lot of problem
finding the essence of, hum, 'organisation' between oss, alsa, arts and
KDE) I finally re-installed amarok (I had it kicked out since I found it
too bulky to use) and this on DOES play without any glitches.
So I guess the driver/HW issues are fine and it's just now up to me to
find which API to use. I'm currently going through SDL, enabling the
various modules in it but it still jerks at times. Of course this is one
more layer between me and that I need to take down. What should I try to
write a direct driver for ? ALSA ?
Thanks
Marc
Rob wrote:
On Tuesday 08 January 2008 05:55, Patrick Shirkey
wrote:
Could be a faq. Maybe it's the cdrom drive.
While checking the Eee FAQ is probably useful, it's a cheap, tiny
flash-based laptop and has no optical drive. If the audio issues can
be worked out it might be a nice tool for gigging or field recording
(or tracker composition, as with Marc's program) as long as you don't
want to do much DSP.
http://www.notebookreview.com/default.asp?newsID=4055 (review)
http://laptoplogic.com/resources/detail.php?id=84 (shows scale)
On the eeeuser forums (where Marc seems to have posted his question as
well) there are people having the same sound issue in XP, so
installing XP may not help. Sadly, it sounds to me like Microsoft
will be offering Asus a deeply discounted XP in order to stop them
preinstalling Linux, so future iterations of the device may not be as
Linux-friendly.
Rob
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
12:17 p.m.
On Tuesday 08 January 2008 10:14, M-.-n wrote:
So I guess the driver/HW issues are fine and it's
just now up to me
to find which API to use. I'm currently going through SDL, enabling
the various modules in it but it still jerks at times. Of course
this is one more layer between me and that I need to take down.
What should I try to write a direct driver for ? ALSA ?
I would have to imagine Amarok uses ARTS, the KDE sound server. So I
would check and see what that uses, and what the default settings are
to see if that'll give you any hints.
Or you could just write to ARTS, but then your app is dependent on all
that other KDE stuff too if I remember right.
Rob
5:08 p.m.
On Tuesday 08 January 2008, M-.-n wrote:
I'm writing because recently I received for Xmas
an azus EEE. Not a very
powerful machine but a great little traveller for internet, coding and
possibly... audio. I got my tracker running on it without to much
trouble (which was to be expected since it runs fine using only one of
the GP2x proc at 200Mhz) but I face a glitching issue on my EEE. First I
thought it was due to the usual buffer configuration problems but then I
realized both VLC and Audacity glitched too on playback. It's not a
constant one.. more like here and there the audio device gets stuck (or
some process/IRQ taking over?).
The audio devices in many notebooks are a bit problematic.
Please let us see the output of
lspci -v
and
cat /proc/interrupts
and also what distro do you have installed? what kernel?
Flo
--
Palimm Palimm!
http://tapas.affenbande.org
5:18 p.m.
Hi Flo,
The audio devices in many notebooks are a bit
problematic.
Yeah.. I guess so. Although I guess external usb devices should be ok.
Please let us see the output of
lspci -v
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express
Processor to DRAM Controller (rev 04)
Subsystem: ASUSTeK Computer Inc. Unknown device 82d9
Flags: bus master, fast devsel, latency 0
Capabilities: <access denied>
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML
Express Graphics Controller (rev 04) (prog-if 00 [VGA])
Subsystem: ASUSTeK Computer Inc. Unknown device 82d9
Flags: bus master, fast devsel, latency 0, IRQ 5
Memory at f7f00000 (32-bit, non-prefetchable) [size=512K]
I/O ports at ec00 [size=8]
Memory at d0000000 (32-bit, prefetchable) [size=256M]
Memory at f7ec0000 (32-bit, non-prefetchable) [size=256K]
Capabilities: <access denied>
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML
Express Graphics Controller (rev 04)
Subsystem: ASUSTeK Computer Inc. Unknown device 82d9
Flags: bus master, fast devsel, latency 0
Memory at f7f80000 (32-bit, non-prefetchable) [size=512K]
Capabilities: <access denied>
00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
High Definition Audio Controller (rev 04)
Subsystem: ASUSTeK Computer Inc. Unknown device 82a1
Flags: bus master, fast devsel, latency 0, IRQ 5
Memory at f7eb8000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
PCI Express Port 1 (rev 04) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
Capabilities: <access denied>
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
PCI Express Port 2 (rev 04) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
Memory behind bridge: fbf00000-fbffffff
Capabilities: <access denied>
00:1c.2 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
PCI Express Port 3 (rev 04) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=02, sec-latency=0
Memory behind bridge: f8000000-fbefffff
Prefetchable memory behind bridge: 00000000f0000000-00000000f6ffffff
Capabilities: <access denied>
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #1 (rev 04) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 82d8
Flags: bus master, medium devsel, latency 0, IRQ 3
I/O ports at e400 [size=32]
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #2 (rev 04) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 82d8
Flags: bus master, medium devsel, latency 0, IRQ 7
I/O ports at e480 [size=32]
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #3 (rev 04) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 82d8
Flags: bus master, medium devsel, latency 0, IRQ 10
I/O ports at e800 [size=32]
00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #4 (rev 04) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 82d8
Flags: bus master, medium devsel, latency 0, IRQ 5
I/O ports at e880 [size=32]
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB2 EHCI Controller (rev 04) (prog-if 20 [EHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 82d8
Flags: bus master, medium devsel, latency 0, IRQ 3
Memory at f7eb7c00 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev d4)
(prog-if 01 [Subtractive decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=05, subordinate=05, sec-latency=32
Capabilities: <access denied>
00:1f.0 ISA bridge: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge
(rev 04)
Subsystem: ASUSTeK Computer Inc. Unknown device 82d8
Flags: bus master, medium devsel, latency 0
00:1f.2 IDE interface: Intel Corporation 82801FBM (ICH6M) SATA Controller
(rev 04) (prog-if 80 [Master])
Subsystem: ASUSTeK Computer Inc. Unknown device 82d8
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 7
I/O ports at 01f0 [size=8]
I/O ports at 03f4 [size=1]
I/O ports at 0170 [size=8]
I/O ports at 0374 [size=1]
I/O ports at ffa0 [size=16]
Capabilities: <access denied>
00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus
Controller (rev 04)
Subsystem: ASUSTeK Computer Inc. Unknown device 82d8
Flags: medium devsel
I/O ports at 0400 [size=32]
01:00.0 Ethernet controller: Atheros Communications, Inc. AR5007EG 802.11
b/g Wireless PCI Express Adapter (rev 01)
Subsystem: Unknown device 1a3b:1026
Flags: bus master, fast devsel, latency 0, IRQ 10
Memory at f8000000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
03:00.0 Ethernet controller: Atheros Technology Corp. L2 100 Mbit Ethernet
Adapter (rev a0)
Subsystem: ASUSTeK Computer Inc. Unknown device 8233
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at fbfc0000 (64-bit, non-prefetchable) [size=256K]
Expansion ROM at fbfa0000 [disabled] [size=128K]
Capabilities: <access denied>
cat /proc/interrupts
CPU0
0: 3252114 XT-PIC-XT timer
1: 44971 XT-PIC-XT i8042
2: 0 XT-PIC-XT cascade
3: 178743 XT-PIC-XT uhci_hcd:usb1, ehci_hcd:usb5
5: 451891 XT-PIC-XT uhci_hcd:usb4, HDA Intel,
i915@pci:0000:00:02.0, pciehp
7: 23 XT-PIC-XT uhci_hcd:usb2
9: 68641 XT-PIC-XT acpi
10: 1638393 XT-PIC-XT uhci_hcd:usb3, pciehp, wifi0
11: 3 XT-PIC-XT eth0, pciehp
12: 887680 XT-PIC-XT i8042
14: 0 XT-PIC-XT libata
15: 44113 XT-PIC-XT libata
NMI: 0
ERR: 0
and also what distro do you have installed? what
kernel?
It comes pre-installed with a customised Xandros distro. The Kernel seems to
be a 2.6.x.
Thanks for any help
Marc
9 Jan
9 Jan
8:47 a.m.
M-.-n wrote:
Hi Flo,
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML
00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
00:1c.2 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev d4)
00:1f.0 ISA bridge: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge
00:1f.2 IDE interface: Intel Corporation 82801FBM (ICH6M) SATA Controller
00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus
01:00.0 Ethernet controller: Atheros Communications, Inc. AR5007EG 802.11
03:00.0 Ethernet controller: Atheros Technology Corp. L2 100 Mbit Ethernet
lovely. why do hardware vendors always cram too many things on the audio
irq?
cat /proc/interrupts
CPU0
0: 3252114 XT-PIC-XT timer
1: 44971 XT-PIC-XT i8042
2: 0 XT-PIC-XT cascade
3: 178743 XT-PIC-XT uhci_hcd:usb1, ehci_hcd:usb5
5: 451891 XT-PIC-XT uhci_hcd:usb4, HDA Intel,
i915@pci:0000:00:02.0, pciehp 7: 23 XT-PIC-XT uhci_hcd:usb2
9: 68641 XT-PIC-XT acpi
10: 1638393 XT-PIC-XT uhci_hcd:usb3, pciehp, wifi0
11: 3 XT-PIC-XT eth0, pciehp
12: 887680 XT-PIC-XT i8042
14: 0 XT-PIC-XT libata
15: 44113 XT-PIC-XT libata
NMI: 0
ERR: 0
2.6 is pretty vague... can you show us uname -a ?
btw, are you sure it's an interrupt or cpu load problem? some people
have reported crosstalk from hd motors or their graphics card stalling
the pci bus. can you provoke glitches by dragging windows around?
--
jörn nettingsmeier
home://germany/45128 essen/lortzingstr. 11/
http://spunk.dnsalias.org
phone://+49/201/491621
Kurt is up in Heaven now.
and also what distro do you have installed? what
kernel?
It comes pre-installed with a customised Xandros distro. The Kernel seems to
be a 2.6.x.
9 Jan
9 Jan
6:07 p.m.
On Tuesday 08 January 2008, M-.-n wrote:
I think intel ICH is one of the more problematic chipsets. Using a program
where you have tight control over setting the audio interface parameters you
could find a set of working ones and then try to get your other programs to
use similar settings..
Things to try out would be:
a] different sampling rates [my first guess would be that 48khz works best]
b] opening the audio device playback only
c] use a perdiod sizo between 256 and 1024 and rather many periods..
Hi Flo,
Yes, they have their own bag of problem though ;)
The audio devices in many notebooks are a bit
problematic.
Yeah.. I guess so. Although I guess external usb devices should be ok. Please let us
see the output of
lspci -v
00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
High Definition Audio Controller (rev 04)
Subsystem: ASUSTeK Computer Inc. Unknown device 82a1
Flags: bus master, fast devsel, latency 0, IRQ 5
Memory at f7eb8000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied> CPU0
0: 3252114 XT-PIC-XT timer
1: 44971 XT-PIC-XT i8042
2: 0 XT-PIC-XT cascade
3: 178743 XT-PIC-XT uhci_hcd:usb1, ehci_hcd:usb5
5: 451891 XT-PIC-XT uhci_hcd:usb4, HDA Intel,
This could be a bit problematic if you use the corresponding usb port..
i915@pci:0000:00:02.0, pciehp
7: 23 XT-PIC-XT uhci_hcd:usb2
9: 68641 XT-PIC-XT acpi
10: 1638393 XT-PIC-XT uhci_hcd:usb3, pciehp, wifi0
11: 3 XT-PIC-XT eth0, pciehp
12: 887680 XT-PIC-XT i8042
14: 0 XT-PIC-XT libata
15: 44113 XT-PIC-XT libata
NMI: 0
ERR: 0
Flo
--
Palimm Palimm!
http://tapas.affenbande.org
6:02 a.m.
Florian Schmidt wrote:
On Tuesday 08 January 2008, M-.-n wrote:
> I'm writing because recently I received for Xmas an azus EEE. Not a very
> powerful machine but a great little traveller for internet, coding and
> possibly... audio. I got my tracker running on it without to much
> trouble (which was to be expected since it runs fine using only one of
> the GP2x proc at 200Mhz) but I face a glitching issue on my EEE. First I
> thought it was due to the usual buffer configuration problems but then I
> realized both VLC and Audacity glitched too on playback. It's not a
> constant one.. more like here and there the audio device gets stuck (or
> some process/IRQ taking over?).
and also what distro do you have installed? what
kernel?
If Florian is using the one that comes with the EEE, it's Xandros Linux.
--
David
gnome(a)hawaii.rr.com
authenticity, honesty, community
10 Jan
10 Jan
4:36 a.m.
On Wednesday 09 January 2008, david wrote:
Florian Schmidt wrote:
Heh, i use ubuntu linux on my thinkpad t21 and on my desktop.. i never heard
of these azus EEE thingies before this thread started :D
Flo
--
Palimm Palimm!
http://tapas.affenbande.org
On Tuesday 08 January 2008, M-.-n wrote:
If Florian is using the one that comes with the EEE, it's Xandros Linux. I'm writing because recently I received for
Xmas an azus EEE. Not a very
powerful machine but a great little traveller for internet, coding and
possibly... audio. I got my tracker running on it without to much
trouble (which was to be expected since it runs fine using only one of
the GP2x proc at 200Mhz) but I face a glitching issue on my EEE. First I
thought it was due to the usual buffer configuration problems but then I
realized both VLC and Audacity glitched too on playback. It's not a
constant one.. more like here and there the audio device gets stuck (or
some process/IRQ taking over?).
and also what distro do you have installed? what kernel?
5:45 a.m.
Florian Schmidt wrote:
On Wednesday 09 January 2008, david wrote:
Sorry, things are getting confusing in this thread!
A friend of mine got the high-end eeePC for Christmas, enjoys it very
much, but he doesn't do audio stuff with it. He has his server hooked
into his home audio system and only uses the eeePC to run his server
desktop remotely and play his music collection that way.
--
David
gnome(a)hawaii.rr.com
authenticity, honesty, community
Florian Schmidt wrote:
Heh, i use ubuntu linux on my thinkpad t21 and on my desktop.. i never heard
of these azus EEE thingies before this thread started :D On Tuesday 08 January 2008, M-.-n wrote:
If Florian is using the one that comes with the EEE, it's Xandros
Linux. I'm writing because recently I received for
Xmas an azus EEE. Not a very
powerful machine but a great little traveller for internet, coding and
possibly... audio. I got my tracker running on it without to much
trouble (which was to be expected since it runs fine using only one of
the GP2x proc at 200Mhz) but I face a glitching issue on my EEE. First I
thought it was due to the usual buffer configuration problems but then I
realized both VLC and Audacity glitched too on playback. It's not a
constant one.. more like here and there the audio device gets stuck (or
some process/IRQ taking over?).
and also what distro do you have installed? what
kernel?
6:17 a.m.
They're great for portability/price, according that you don't expect too
much power from them. I didn't take mine specifically for doing audio but if
I get it running smoothly it's going to be a very nice little on the go/gig
machine. Definetly worth spending a few hours on understanding how to get
the best out of it.
A friend of mine got the high-end eeePC for Christmas,
enjoys it very
much, but he doesn't do audio stuff with it. He has his server hooked
into his home audio system and only uses the eeePC to run his server
desktop remotely and play his music collection that way.
8 Jan
8 Jan
6:36 p.m.
2008/1/8, M-.-n <nostromo(a)arkaos.net>et>:
I face a glitching issue on my EEE. First I
thought it was due to the usual buffer configuration problems but then I
realized both VLC and Audacity glitched too on playback.
all of the programs use different output settings
just some suggestions:
have a look at the options/configs of the programs
which output driver is selected (alsa ? or oss, jack, arts, etc..)?
vlc and audacity are a little complicated to setup (since they provide
a lot of options)
try playback with a more simple program first. maybe:
alsaplayer -o alsa
try (as root):
killall artsd
(artsd is a kind of sound driver used by kde apps)
6164
days inactive
6166
days old
linux-audio-user@lists.linuxaudio.org
14 comments
7 participants
participants (7)
-
david -
Emanuel Rumpf -
Florian Schmidt -
Joern Nettingsmeier -
M-.-n -
Patrick Shirkey -
Rob