I hope it is still possible to build the alsa driver into a whole kernel
?!
Would it be an alternative that I install the same distro as you are
using, and that you compile kernels with the properties that you want me
to test. and upload its files for me to download and install?
Then I can run
It seem there is no way to build alsa driver as module after kenerl 4.3
since alsa-driver-build no longer maintained after 2015 october
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I can continue to try helping to improve the driver for the Aureal card
(although there are no symptoms in this computer now). But as I said
before - I need a lot of help, this task is far beyond what I have been
doing before.
*An alternative is that you upload kernels that I can test*
If you
https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-
build.git/tree/alsa/gitcompile?h=build#n59
It need aclocal and autoconf to generate configure script
Have you installed the packages?
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utils/setup-alsa-kernel -c ../../sound
worked without complaints :-)
Please tell me *the whole command line* that should end like that!
--with-debug=full
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https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/core/oss?id=ab30965d9bfcd04931f9b70d00faa2ea614835a8
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Did you change to alsa directory after git checkout build?
The alsa directory should contain
https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-build.git/tree/alsa?h=build
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Usually the reason fail to compile are those patch in acore directory
are out dated and you need to report to alsa-devel mailng list
https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-
build.git/tree/alsa/acore?h=build
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Reply from Tiwai:
The build with alsa-driver external tree is no longer supported.
You need to build the kernel module directly.
Takashi
-o-
And as usual - I need detailed help.
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'Usually the reason fail to compile are those patch in acore directory
are out dated and you need to report to alsa-devel mailng list
https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-
build.git/tree/alsa/acore?h=build'
Can you see anything wrong, or should I report to the
gitcompile.sh and utils subdirectory
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Title:
snd_au8820 :01:04.0: BUG: , pos = 16386, buffer size = 16384,
period size
I think the subdirectories are correct, but still, something is missing.
alias l='ls -l --group-directories-first'
[100] olle@xenial32 ~/tiwai/alsa-driver-build/alsa $ l
totalt 324
drwxrwxr-x 5 olle olle 4096 mar 16 11:23 acore
drwxrwxr-x 27 olle olle 4096 mar 16 11:50 alsa-kernel
https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-
build.git/log/?h=build
Last update was 2015 october 12
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Since March 15 (during two full days and part of a third day) I am no
longer spammed by prompts to report kernel oops like I used to be at
login after reboot and shutdown + cold boot. There has been no
notification of a kernel oops at all. I have rebooted and still no such
prompts. I have also
https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-
build.git/tree/alsa/gitcompile?h=build
The minimum version of the packages are defined at the first few lines
automake
autoconf
libtool
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gitcompile only pass the command to configure and run make if no errors
./configure --help
You have to ask the author
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it is strange that pcm_avail.c which only wite one buffer can trigger
when the messages are rate limited
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/core/pcm_lib.c?id=74d779ab7c9f9024cfead259206e0e0b20ee37e4
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You have to send email with the errors to Tiwai
The errors related to file in alsa-driver/alsa/acore are related to
changes in sound/core, you need his help to regenerate those patch files
in acore
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/log/sound/core
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In theory , there is no need to use any patch in oss directory if you
have disabled oss enumeration by passing --with-oss=no
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/log/sound/core/oss
You get checkout or use browser to extract the old version of two file
pcm_oss.c and
utils/setup-alsa-kernel -c ../../sound
Only use the following option to build debug driver which enable those dev_dbg
call
--with-debug=full
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The above link is just the oss directory just before
ALSA: oss: underflow in snd_mixer_oss_proc_write(). 2015 october 15
Save the plain text of the two affected files
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I installed those 3 packages and ran gitcompile:
$ ./gitcompile --enable-dynamic-minors --with-oss=no --with-cards=au8820
,hda-intel --with-sequencer=yes --with-debug=full
See the whole output in the attached file.
It worked better, but there are still errors.
make[2]: Går till katalogen
olle@xenial32 ~/tiwai/alsa-driver-build/alsa $ ./gitcompile
--enable-dynamic-minors --with-oss=no --with-cards=au8820,hda-intel
--with-sequencer=yes make: Inget behöver göras för ”all-deps”.
./gitcompile: rad 59: aclocal: kommandot finns inte
[1] olle@xenial32 ~/tiwai/alsa-driver-build/alsa $
Following comment #71 caused the following error:
olle@xenial32 ~/linux $ cd ..
olle@xenial32 ~ $ mkdir tiwai; cd tiwai
olle@xenial32 ~/tiwai $ git clone git://github.com/tiwai/alsa-driver-build.git
Klonar till "alsa-driver-build"...
remote: Counting objects: 159995, done.
remote: Total 159995
I don't understand the talk about another computer in the link from
comment #71. Does it apply for me?
And the directory structure does not match the instructions. I'm lost
again.
Trying to follow comment #112 caused the following error:
olle@xenial32 ~/linux $ cd ~/tiwai/alsa-driver-build/
A real kernel oops usually consist of stacktrace and dump of all cpu
registers
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Title:
snd_au8820 :01:04.0: BUG: , pos =
You can specify card to just build the needed driver or specify all
cards
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Title:
snd_au8820 :01:04.0: BUG: , pos =
For building alsa driver as module
https://bugs.launchpad.net/ubuntu/+source/alsa-
driver/+bug/1551041/comments/71
You just follow the instruction in that link
What you need to do is
cd alsa-driver
git checkout build
utils/setup-alsa-kernel -c. ../../sound
./gitcompile --enable-dynamic-minors
Edit: Has some change already *trickled* down? :-)
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Title:
snd_au8820 :01:04.0: BUG: , pos = 16386, buffer size = 16384,
I upgraded to a new kernel
$ uname -a
Linux xenial32 4.4.0-12-generic #28-Ubuntu SMP Wed Mar 9 00:33:13 UTC 2016 i686
i686 i686 GNU/Linux
and I am no longer spammed by prompts to report kernel oops. I rebooted
and still no such prompts.
- The sound is working as usual. Has some change already
Is this part of the instruction
git clone
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
wrong alias only a template? In that case, should it be
git clone
git://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/core?id=48d882978eb0a15547093b4542a82b5c22548041
FIG. 15e is a diagrammatic block diagram of a control register of FIG.
15d, in accordance with one embodiment. Control register 384(c) includes
a sub-buffer enable interrupt flag 384(c)(0), a stop flag 384(c)(1) and
a next segment pointer 384(c)(2). Sub-buffer enable interrupt flag
384(c)(0)
I need detailed instructions as terminal window command lines
I think the only way I can manage this task is that I get detailed
instructions as terminal window command lines (or a shellscript file).
Otherwise I will be lost. You know how to do things, and you give
instructions on a high level,
Is this part of the instruction
git clone
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
wrong alias only a template? In that case, should it be
git://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git
or something else?
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https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/refs/tags
You need to know ubuntu 16.04 using which version of kernel
You will find those XRUN/BUGS/invalid position message in system log
before patching and no more message after patching
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I installed Lubuntu 15.10 and tried according to the same method
https://wiki.ubuntu.com/Kernel/KernelBisection#Testing_a_newly_released_patch_from_upstream
but it did not work at all.
This is impossible for me. I do not understand the instructions. It is
not cherry-picking, it is sour grapes
Or should I try in another version of Ubuntu, for example 14.04.1 LTS?
But then I won't get those spammed messages anyway.
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OK. A small step forward. It seems that I have compiled, but there are
errors:
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compilation terminated.
scripts/sign-file.c:23:30: fatal error: openssl/opensslv.h: Filen eller
katalogen finns inte
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You just use any editor to replace this line in au88x0_pcm.c
return (bytes_to_frames(substream->runtime, current_ptr));
by following lines
current_ptr = bytes_to_frames(substream->runtime, current_ptr);
if (current_ptr >= substream->runtime->buffer_size)
current_ptr = 0;
return
Looking more at the git command line, it seems the problem is a separate
'patch' command.
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user.name "Your Name" && cd $HOME && git clone
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git && patch
>> patching file /home/olle/linux/drivers/acpi/video.c
>> Hunk #1 FAILED at 432.
>> 1 out of 1 hunk FAILED -- saving rejects to file
>> /home/olle/linux/drivers/acpi/video.c.rej
>
> See the file name here: you must be patching a totally different file.
> Or it's about a different patch.
>
> If
The file /home/olle/linux/drivers/acpi/video.c is missing.
- Is it because of the failed git command?
- Or does the git command fail because it was missing when the file
should have been there (put there by previous git commands)?
- Must I install source code before running the git command? How
I tried in the system which is suffering from this bug (Lubuntu Xenial
with the kernel
Linux xenial32 4.4.0-11-generic #26-Ubuntu SMP Sat Mar 5 14:22:05 UTC
2016 i686
and I failed with the git command. I replied directly to tiwai, and post
a copy here.
*Maybe you can see what is wrong*
-
I understand that tiwai's first fix only removes the symptoms, not the
original problem. I thought that I can live with that.
The problem is that I do not understand how to implement tiwai's second
fix, and he says that he doesn't know how to do it in Ubuntu. Now you
say I have to do it at the
https://bugs.launchpad.net/ubuntu/+source/alsa-
driver/+bug/1551041/comments/57
You have to apply the patch manually at the stable ubuntu kernel/driver
and report back to tiwai
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'Sound.git is unstable and not gauarnteed to compile at any time
The safest way is to compile debug kernel/driver at stable ubuntu release'
Do you mean that I should install a system of Ubuntu 14.04.1 LTS or
Ubuntu 14.04.4 LTS, *dedicated for this task*, and use that for
compiling souund.git?
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/au88x0?id=54a96dadaa2bbe81006c66447517b57534d80e7f
Before this patch, period_size can be as low as 1 frames,
difference of current page and last page will be 2 or 3 instead of 1
In theory, you should not see the
Sound.git is unstable and not gauarnteed to compile at any time
The safest way is to compile debug kernel/driver at stable ubuntu
release
Tiwai expect you to apply the patch and report back whether it has no side
effect
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Do you suggest that I try to build the alsa driver with debug now?
Maybe I should I make a dedicated system alongside the system I am using
for general testing.
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https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/core/pcm_lib.c?id=f5914908a5b7b2338f210e56827a1ef35585dc6d
To debug the ptr position at period interrupt, you need alsa driver
build with debug which allow you to enable trace point to log the ptr
position in system
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The fix for the other driver in the original bug report
It look like au88x0 pointer callback does not return zero when interrupt occur,
just 2 or 3 frames
$ dmesg | grep -i "au88"
[ 12.425799] snd_au8820 :01:04.0: init started
[ 13.157353] snd_au8820 :01:04.0: init done.
[ 13.192583] gameport gameport0: AU88x0 Gameport is
pci:01:04.0/gameport0, speed 1087kHz
[ 2357.843401] snd_au8820 :01:04.0: BUG: , pos = 16385, buffer
dmesg | grep -i "au88"
Since pcm_avail.c only write buffer size once, it is unable to trigger
the bug which ptr > buffer size
so we need to modify the logic to loop more data
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'Do the number of BUG messsges in system log still 2 frames larger than
buffer size'
I don't understand how to do this or check this. Please explain!
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'Can you change
periods from 4 to 16
and period_size from 1024 to 256
post the output of pcm_avail.c'
Done. See the attached file.
** Attachment added: "pcm_avail_periods-16_periodsize-256.out"
Can you change
periods from 4 to 16
and period_size from 1024 to 256
post the output of pcm_avail.c
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Title:
snd_au8820
Do the number of BUG messsges in system log still 2 frames larger than
buffer size
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Title:
snd_au8820 :01:04.0: BUG: ,
fixed typing error: please *tell* me what to do
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Title:
snd_au8820 :01:04.0: BUG: , pos = 16386, buffer size = 16384,
Raymond, do you need anything from me now? In that case, please me what
to do?
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Title:
snd_au8820 :01:04.0: BUG: , pos =
As there is no datasheet, we can only follow the patent description
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/au88x0/au8820.h#n26
FIG. 15c is a diagrammatic block diagram of a mode register 382 of sub-
buffer table 380(3) of FIG. 15b. Mode register 382 includes
'Can you post the output of pcm_avail.c when using rate 44100 Hz instead
of 48000Hz?
print the time at the same time to check whether the ptr is monotically
increasing as expected rate'
I attach a file with the specified rate. I don't know/remember C well
enough, so I need your help to print the
https://bugs.freedesktop.org/show_bug.cgi?id=84585#c60
Modified version
You can compare the result
** Bug watch added: freedesktop.org Bugzilla #84585
https://bugs.freedesktop.org/show_bug.cgi?id=84585
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Time diffenece between successive output and frames difference will tell
you whether the card is accurate enoung for pulseaudio timer scheduling
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Can you post the output of pcm_avail.c when using rate 44100 Hz instead
of 48000Hz?
print the time at the same time to check whether the ptr is monotically
increasing as expected rate
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** Tags added: cherry-pick
** Changed in: alsa-driver (Ubuntu)
Status: Incomplete => Triaged
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Title:
snd_au8820
Yes, I understand.
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Title:
snd_au8820 :01:04.0: BUG: , pos = 16386, buffer size = 16384,
period size = 1024
Status in
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?id=0ab1ace856205d10cbc1924b2d931c01ffd216a6
This patch only prevent kerneloops pop up, your system log still
flooding with invalid position message every 0.371 second (assume once
per buffer time) when playing audio
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Raymond,
I can re-phrase the question like this:
Do you want to fix the alsa-driver to eliminate the problem with the
pointer? In that case I am willing to help testing it :-)
Otherwise I can wait for the fix, where the string 'BUG' is replaced
with 'XRUN'
- "BUG:
I have been away from the keyboard for a few hours. It is nice weather,
so nice outdoors here today :-)
Would you say it is meaningful to build a new alsa driver (even if it is
means installing many packages?
If that is the case, should I do it in a separate system (to avoid
damaging the current
http://mailman.alsa-project.org/pipermail/alsa-
devel/2013-February/059559.html
You need to install many packages in order to build alsa driver
git, autoconf, kernel-header,
You need to rebuild the alsa driver whenever kernel change
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no need to perform git bisect since you already know the reason of
kernel ops is due to "BUG:"
Do ubuntu allow user just build alsa driver as module instead of
recompile the whole kernel
https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-build.git/
The oscillator is the silver metal component just above the au8820 chip
of your montego card
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Title:
snd_au8820
You may need to dump mmio VORTEX_SMP_TIME which is tick at 48000 * 256
Hz (what is the clock printed at the oscillator on your au8820 sound
card) to find out the elapsed time between periods is correct or not
- return (bytes_to_frames(substream->runtime, current_ptr));
+ current_ptr =
the differnce between successive output are almost 5 frames
The only bad thing
ptr is not always at period boundary 1024, 2048, 3072 and 4096
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I ran pcm_avail after changing to device #1
/* const char* device = "hw:0"; */
const char* device = "hw:1";
and re-compiling.
I redirected the error output to the attached file.
** Attachment added: "pcm_avail.out"
Card numer can be specified by module parameter "index"
Module: snd_hda_intel align_buffer_size : -1 bdl_pos_adj :
32,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
beep_mode :
N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N enable :
So using the ALSA tools, it is possible to have a better control of the
audio, it provides a more advanced mixer. Maybe that is why it is also
more difficult to learn :-)
-o-
I will scan the previous few comments and try to perform some tasks,
that I might have overlooked. Please remind me, if
Run two alsa applications which using hw device, hwmixvolume allow you
to change the subdevice PCM volume controls which dB range allow gain in
addition to attenuation
For any pulse application, it just control by the subdevice opened by
pulseaudio server
The hardware mixed signal are pass
I don't understand how to use comment #60.
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Title:
snd_au8820 :01:04.0: BUG: , pos = 16386, buffer size = 16384,
Den 2016-03-11 kl. 02:22, skrev Raymond:
> There will be volume slider(hardware per stream volume control) for each
> application if the application use hw instead of pulse
>
> pavucontrol provide sofware per stream volume control
>
Both would be OK for me. But I have learned to use pavucontrol.
Each subdevice has its own volume control
control.59 { iface PCM name 'PCM Playback Volume' value.0 0 value.1 0
comment { access 'read write inactive' type INTEGER count 2 range '-128
- 32' dbmin -9600 dbmax 2400 dbvalue.0 0 dbvalue.1 0 } }
control.60 { iface PCM subdevice 1 name 'PCM Playback
There will be volume slider(hardware per stream volume control) for each
application if the application use hw instead of pulse
pavucontrol provide sofware per stream volume control
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sudodus, patch test instructions may be found at
https://wiki.ubuntu.com/Kernel/KernelBisection#Testing_a_newly_released_patch_from_upstream
.
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Raymond,
The committer, Takashi Iwai, decided to help us. Can you use this patch
(and help me test it) :-)
Nio
-
OK, I see why this bogus report reappears again. The message tag was
reverted back after some commit for correctness.
Now I rephrased the text again so that it won't hit some
His program hardcode to use card 0, you have to change the card number
if ypur au8820 is card 1
or change the order of your two cards by adding specify card number for
the two drivers in /etc/modprobe.d/alsa-base.conf
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I have written directly to the author and committer, but also made a
comment in their old bug report.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1305480/comments/13
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Thank you very much for investigating this issue, Raymond :-)
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Title:
snd_au8820 :01:04.0: BUG: , pos = 16386, buffer
You have to send email to the author and commiter since flooding the
system log with message is useless
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Title:
snd_au8820
I see: 'The kerneloops-daemon scans dmesg for common crash signatures,
among which is 'BUG:'. The message emitted by the PCM library is really
a warning, so the most expedient thing to do seems to be to change the
string.'
Yes, this might be the problem :-)
Can you help getting rid of it (how to
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/core/pcm_lib.c?id=00d90154404ae6218730068d25bf2faad3186631
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No, I changed it according to your tips and could compile without
complaints.
/* #include */
#include
$ l
totalt 24
-rwxrwxr-x 1 olle olle39 mar 10 15:06 maker
-rwxrwxr-x 1 olle olle 13240 mar 10 16:02 pcm_avail
-rw-rw-r-- 1 olle olle 3703 mar 10 16:02 pcm_avail.c
olle@xenial32
'Are you the kernel oops is related to au8820 since it just flooding the
system log with BUGS message but no seg fault or dump
it is strange that your bug report did not have pulselist or pulseaudio
log'
No I'm not sure at all. It says 'snd_au8820' in the automatically
created bug report, but I
It should be there:
sudo apt-get install libasound2-dev
Läser paketlistor… Färdig
Bygger beroendeträd
Läser tillståndsinformation… Färdig
libasound2-dev is already the newest version (1.1.0-0ubuntu1).
Följande paket har installerats automatiskt och är inte längre nödvändiga:
Are you the kernel oops is related to au8820 since it just flooding the
system log with BUGS message but no seg fault or dump
it is strange that your bug report did not have pulselist or pulseaudio
log
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Packages, which is
Did his program use #include similar to aplay.c?
http://git.alsa-project.org/?p=alsa-
utils.git;a=blob;f=aplay/aplay.c;hb=HEAD
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It complains:
pcm_avail.c:5:23: fatal error: asoundlib.h: no such file
I guess I need some library?
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https://bugs.launchpad.net/bugs/1551041
Title:
snd_au8820
http://packages.ubuntu.com/search?lang=en=libasound2-dev
For pcm_avail.c
You need to install libasound2-dev and gcc
sudo apt-get install libasound2-dev
gcc pcm_avail.c -o pcm_avail -l asound
./pcm_avail
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'You have to recompile alsa driver by adding
if (current_ptr > runtime->buffer_size)
current_ptr = runtime->buffer_size;'
--
'http://mailman.alsa-project.org/pipermail/alsa-devel/2014-September/081501.html
you can try Alexander's pcm_avail.c and post the output using your
au8820
It is
I added the output for the command with sudo to get the capabilities:
$ sudo lspci - |grep -A16 Multimedia
01:04.0 Multimedia audio controller: Aureal Semiconductor Vortex 1 (rev 02)
Subsystem: Voyetra Technologies Montego
Physical Slot: 1
Control: I/O+ Mem+ BusMaster+
I have not rebooted after my previous comments (and the test with
aplay).
Now I can give you better feedback :-)
olle@xenial32 ~ $ dmesg|wc -c
64123
olle@xenial32 ~ $ dmesg|grep -i au88
[ 12.021036] snd_au8820 :01:04.0: init started
[ 12.777390] snd_au8820 :01:04.0: init done.
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