7 Jul
2008
7 Jul
'08
1:56 p.m.
I thought, it would probably help some of you, if I uploaded
my rt-config for a 2.6.25.8 realtime kernel (debian system).
# get my kernel config:
wget http://branwelt.de/download/config.gz
(this is all without any warrenty, use at your own risc)
Below is also a kind of script, that should do the whole procedure
for creating a 2.6.25.8 realtime kernel on a debian based system.
I have not testet this script.
I would recommend, to past command for command, and see if it is
working for you. (it should)
This is how I build the kernel I'm currently using.
Note: The config has the realtime-patch applied, but is not
strictly configured for realtime:
I let enabled acpi and cpu-frequency scaling,
because performance was good enough for my requirements
(2.67ms latency at 48000hz samplerate according to qjackctl).
If you encounter xruns, disable these options with "make menuconfig"
(see bottom)
I tried to keep the config general, so it may be usable on other
systems as well.
It is based on a sidux ~ 2.6.21 configuration, including updates for 2.6.25
start of the command list:
#############################################################
#############################################################
mkdir my_realtime_kernel
cd my_realtime_kernel
# get my kernel config
wget http://branwelt.de/download/config.gz
# get the kernel
wget http://www.eu.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.8.tar.bz2
# get rt-patch
wget http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.25.8-rt7.bz2
# unpack
tar xfj linux-2.6.25.8.tar.bz2
tar xfj patch-2.6.25.8-rt7.bz2
# create a symbolic link
ln -s linux-2.6.25.8 linux
cd linux
# apply patch
patch -p1 < ../patch-2.6.25.8-rt7
# move config to right place
zcat ../config.gz > ./.config
# now edit the Makefile
# change the line with EXTRAVERSION (without #) to:
# EXTRAVERSION = .8.rt7.em1
# optionally do make oldconfig
# or make menuconfig here
# make the kernel
make-kpkg --initrd kernel_image
cd ..
# finally install the kernel with a command like
# dpkg -i linux-image-2.6.25.8.rt7.em1_2.6.25.8.rt7.em1-10.00.Custom_i386.deb
#############################################################
#############################################################
7 Jul
7 Jul
3:42 p.m.
Emanuel Rumpf wrote:
I thought, it would probably help some of you, if I
uploaded
my rt-config for a 2.6.25.8 realtime kernel (debian system).
# get my kernel config:
wget http://branwelt.de/download/config.gz
(this is all without any warrenty, use at your own risc)
Below is also a kind of script, that should do the whole procedure
for creating a 2.6.25.8 realtime kernel on a debian based system.
I have not testet this script.
I would recommend, to past command for command, and see if it is
working for you. (it should)
This is how I build the kernel I'm currently using.
Note: The config has the realtime-patch applied, but is not
strictly configured for realtime:
I let enabled acpi and cpu-frequency scaling,
because performance was good enough for my requirements
(2.67ms latency at 48000hz samplerate according to qjackctl).
If you encounter xruns, disable these options with "make menuconfig"
(see bottom)
I tried to keep the config general, so it may be usable on other
systems as well.
It is based on a sidux ~ 2.6.21 configuration, including updates for 2.6.25
start of the command list:
#############################################################
#############################################################
mkdir my_realtime_kernel
cd my_realtime_kernel
# get my kernel config
wget http://branwelt.de/download/config.gz
# get the kernel
wget http://www.eu.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.8.tar.bz2
# get rt-patch
wget http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.25.8-rt7.bz2
# unpack
tar xfj linux-2.6.25.8.tar.bz2
tar xfj patch-2.6.25.8-rt7.bz2
# create a symbolic link
ln -s linux-2.6.25.8 linux
cd linux
# apply patch
patch -p1 < ../patch-2.6.25.8-rt7
# move config to right place
zcat ../config.gz > ./.config
# now edit the Makefile
# change the line with EXTRAVERSION (without #) to:
# EXTRAVERSION = .8.rt7.em1
# optionally do make oldconfig
# or make menuconfig here
# make the kernel
make-kpkg --initrd kernel_image
cd ..
# finally install the kernel with a command like
# dpkg -i linux-image-2.6.25.8.rt7.em1_2.6.25.8.rt7.em1-10.00.Custom_i386.deb
#############################################################
#############################################################
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
Thanks for this howto!
Don't you build a linux-headers file?
4:15 p.m.
2008/7/7 schoappied <schoappied(a)gmail.com>om>:
Emanuel Rumpf wrote:
small mistake:
> tar xfj patch-2.6.25.8-rt7.bz2
is no tar file! use
bunzip2 patch-2.6.25.8-rt7.bz2
instead
(or install unp !!)
Don't you build a linux-headers file?
I never needed them. Maybe because
I always kept the source in /usr/src/linux
which does have them anyway.
I you need them for building modules make them:
make-kpkg kernel_headers
6:22 p.m.
Emanuel Rumpf wrote:
2008/7/7 schoappied <schoappied(a)gmail.com>om>:
I build the kernel as your said.
Followed the steps.
checked it for a while with make oldconfig
and make xconfig
but I didn't change anything...
Same message, same errors....
Emanuel Rumpf wrote:
small mistake:
> tar xfj patch-2.6.25.8-rt7.bz2
>
is no tar file! use
bunzip2 patch-2.6.25.8-rt7.bz2
instead
(or install unp !!)
Don't you build a linux-headers file?
I never needed them. Maybe because
I always kept the source in /usr/src/linux
which does have them anyway.
I you need them for building modules make them:
make-kpkg kernel_headers
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
6:57 p.m.
2008/7/7 schoappied <schoappied(a)gmail.com>om>:
Emanuel Rumpf wrote:
those IIRC ?:
----------------------------------
fsck.ext3: no such file or directory while trying to open /dev/hda2
/dev/hda2
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else) then the superblock
is corrupt, and you might try running e2fsk with an alternate
superblock:
e2fsck -b 8193 <device>
fsck died with exit status 8
failed (code 8)
-------------------------------------
I don't have a sollution here.
maybe you should try as suggested:
e2fsck -b 8193 /dev/hda2
2008/7/7 schoappied <schoappied(a)gmail.com>om>:
Same message, same errors....
8:37 p.m.
Emanuel Rumpf wrote:
2008/7/7 schoappied <schoappied(a)gmail.com>om>:
Yes, same garbage...
I'll check the e2fsck...
Thanks anyway, also for your howto.
I'm gonna stick with the praised 64studio so I wouldn't complain...
allthough.. spend many many hours to get it right....
About oldconfig and menu config:
When I want to use exactly the same config file as you have (copied that
.config to the new to build kernel folder)... Should I do oldconfig
and/or xconfig? or just start to build that kernel? And what if the
.config file is from a much older kernel? what will happen with the new
kernel configure options? And when you do make oldconfig.. what should
be the answer to the ask questions? just hit ENTER or N, y, m ?
Thanks in advance,
And
Emanuel Rumpf wrote:
those IIRC ?:
----------------------------------
fsck.ext3: no such file or directory while trying to open /dev/hda2
/dev/hda2
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else) then the superblock
is corrupt, and you might try running e2fsk with an alternate
superblock:
e2fsck -b 8193 <device>
fsck died with exit status 8
failed (code 8)
-------------------------------------
I don't have a sollution here.
maybe you should try as suggested:
e2fsck -b 8193 /dev/hda2
_______________________________________________
2008/7/7 schoappied
<schoappied(a)gmail.com>om>:
Same message, same errors....
8:42 p.m.
schoappied wrote:
Emanuel Rumpf wrote:
*kernel
2008/7/7 schoappied
<schoappied(a)gmail.com>om>:
Yes, same garbage...
I'll check the e2fsck...
Thanks anyway, also for your howto.
I'm gonna stick with the praised 64studio *kernel* so I will not complain...
allthough.. spend many many hours to get it right....
About oldconfig and menu config:
When I want to use exactly the same config file as you have (copied that
.config to the new to build kernel folder)... Should I do oldconfig
and/or xconfig? or just start to build that kernel? And what if the
.config file is from a much older kernel? what will happen with the new
kernel configure options? And when you do make oldconfig.. what should
be the answer to the ask questions? just hit ENTER or N, y, m ?
Thanks in advance,
And
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
Emanuel Rumpf wrote:
those IIRC ?:
----------------------------------
fsck.ext3: no such file or directory while trying to open /dev/hda2
/dev/hda2
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else) then the superblock
is corrupt, and you might try running e2fsk with an alternate
superblock:
e2fsck -b 8193 <device>
fsck died with exit status 8
failed (code 8)
-------------------------------------
I don't have a sollution here.
maybe you should try as suggested:
e2fsck -b 8193 /dev/hda2
_______________________________________________
2008/7/7 schoappied
<schoappied(a)gmail.com>om>:
Same message, same errors....
8 Jul
8 Jul
9:53 a.m.
schoappied wrote:
Emanuel Rumpf wrote:
I tried to build it on another debian lenny/sid system, also a P4 and it
works just fine. So its not totally my fault ;) :)
Then the cause is my system, Dell Precision 360 ... maybe the
initrd.img-, maybe ATA?
2008/7/7 schoappied
<schoappied(a)gmail.com>om>:
Yes, same garbage...
I'll check the e2fsck...
Thanks anyway, also for your howto.
I'm gonna stick with the praised 64studio so I wouldn't complain...
allthough.. spend many many hours to get it right....
About oldconfig and menu config:
When I want to use exactly the same config file as you have (copied that
.config to the new to build kernel folder)... Should I do oldconfig
and/or xconfig? or just start to build that kernel? And what if the
.config file is from a much older kernel? what will happen with the new
kernel configure options? And when you do make oldconfig.. what should
be the answer to the ask questions? just hit ENTER or N, y, m ?
Thanks in advance,
And
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
Emanuel Rumpf wrote:
those IIRC ?:
----------------------------------
fsck.ext3: no such file or directory while trying to open /dev/hda2
/dev/hda2
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else) then the superblock
is corrupt, and you might try running e2fsk with an alternate
superblock:
e2fsck -b 8193 <device>
fsck died with exit status 8
failed (code 8)
-------------------------------------
I don't have a sollution here.
maybe you should try as suggested:
e2fsck -b 8193 /dev/hda2
_______________________________________________
2008/7/7 schoappied
<schoappied(a)gmail.com>om>:
Same message, same errors....
5:44 p.m.
2008/7/8 schoappied <schoappied(a)gmail.com>om>:
About oldconfig and menu config:
When I want to use exactly the same config file as you have (copied that
.config to the new to build kernel folder)... Should I do oldconfig and/or
xconfig?
if the config-file matches the kernel version a copy should be enough
as I understand it, oldconfig is only required with a new or modified
kernel-version
i.O. to update it for new config-options.
or just start to build that kernel? And what if the
.config file is
from a much older kernel?
it doesn't have all the config options then;
I would expect make to fail
what will happen with the new kernel configure
options? And when you do make oldconfig.. what should be the answer to the
ask questions? just hit ENTER or N, y, m ?
with some exeptions m should be ok,
but just hitting enter, without understanding what happens
can blaot/break your kernel config (with incompatible/unrecommended
options etc.)
so it's a good idea to "?" first.
I would expect [enter] to choose a reasonable default, but who knows...
regarding your problem:
I would guess a misconfiguration of your system
( maybe it's grub, maybe fstab, initrd.img, ... )
and btw.: please don't always quote the whole message on reply
just necessary phrases with direct relation.
in general we all know, what has been written before in the discussion-thread...
7 Jul
7 Jul
6:31 p.m.
2008/7/7 Emanuel Rumpf <xbran(a)web.de>de>:
I thought, it would probably help some of you, if I
uploaded
my rt-config for a 2.6.25.8 realtime kernel (debian system).
<snip>
tar xfj patch-2.6.25.8-rt7.bz2
zcat ../config.gz > ./.config
</snip>
You can use those compressed files directly/in-line by using the z/bz
prefixed version of cat, i.e.:
bzcat ../patch-2.6.25.8-rt7.bz2 | patch -p1
and
zcat ../config.gz >./.config
It saves a little bit of space, handy to know when you're short of it ;)
Cheers
13 Jul
13 Jul
1:51 p.m.
On Monday 07 July 2008 23:31:30 Giuseppe Zompatori wrote:
2008/7/7 Emanuel Rumpf <xbran(a)web.de>de>:
Did all that, worked like a charm:
1. realtime apparently cannot be set to be modularized as in previous
versions. WIll NOT accept:
CONFIG_SECURITY_CAPABILITIES=m
CONFIG_REALTIME_CAPABILITIES=m
but insists on CONG_SECURITY_CAPABILITIES=y
I have not objection to rlimits but cannot find this.
2. My old nvidia driver will not compile. I can check back on their site for
an upgrade but this is for an older mx400 card!
I thought, it would probably help some of you, if
I uploaded
my rt-config for a 2.6.25.8 realtime kernel (debian system).
<snip>
tar xfj patch-2.6.25.8-rt7.bz2
zcat ../config.gz > ./.config
</snip>
You can use those compressed files directly/in-line by using the z/bz
prefixed version of cat, i.e.:
bzcat ../patch-2.6.25.8-rt7.bz2 | patch -p1
6:30 p.m.
2008/7/13 David Baron <d_baron(a)012.net.il>il>:
1. realtime apparently cannot be set to be modularized
as in previous
versions. WIll NOT accept:
CONFIG_SECURITY_CAPABILITIES=m
CONFIG_REALTIME_CAPABILITIES=m
did you use the the config that I uploaded ?
I'm asking, because it has:
CONFIG_SECURITY_CAPABILITIES=y
and doesn't even contain the option:
CONFIG_REALTIME_CAPABILITIES
nvidia driver
------------------------------------------------------------------------------
2. My old nvidia driver will not compile. I can check
back on their site for
an upgrade but this is for an older mx400 card!
Maybe comiling and installing the kernel headers does help:
make-kpkg kernel_headers
and then install with dpkg -i ....
for current drivers check: http://www.nvidia.com/object/unix.html
I have nvidia too.
But haven't tried to compile it for the current kernel yet.
I've recently had more and more problems
with the binary driver (X suddenly quitting)
and thus don't use it at the moment.
I'm currently using nvidia framebuffer driver instead (it's open
source, afaict):
modprobe nvidiafb
and for using it in X, in /etc/X11/xorg.conf set Option Driver to "fbdev"
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12 comments
4 participants
participants (4)
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David Baron -
Emanuel Rumpf -
Giuseppe Zompatori -
schoappied