linuxconsole-dev

Multihead in Debian/Debian-based distro and 64-bits?

[drbista <dr...@ep...>]

Dear friends:

Many greetings! I have created a dualhead in FC1 (thanks to Zoli). But I am 
trying to create one in Debian/Debian-based distro SimplyMEPIS. Before 
proceeding I have a few questions:

1) I have installed LTSP (ltsp.org) and three different terminals are being 
used in the current machine (PIII 1GHz 256MB). Could the ltsp and multihead 
coexist in the same machine? Anyone has experience?

2) I have seen instructions for debian multihead at 
http://www.c3sl.ufpr.br/fourhead/howto-en.php but it does not mention of the 
pci_isolate_device_feature.diff 
(http://www.ltn.lv/~aivils/files/080_pci_isolate_device_feature.diff) as 
stated in Aivils' site (http://www.ltn.lv/~aivils/eng-down.html). Any idea?

3) Whether it is necessary to make changes in the display manager? In my 
current SimplyMEPIS (debian-based) distro, I am using kdm. When creating 
multihead with FC1, I do remember that I made changes at gdm.conf under 
[servers].

4) I have acquired with much difficulty a PCI VGA card from Tseng labs (ET6000 
22a26K650). Does anyone have any experience about this card working with 
multihead?

5) May I have some contacts or sites which is peculiarly working on the 64-bit 
linux multiheads? Of course I know my dear friend Zoli from Hungary who has 
been active in FC3, but I want to know more who has been involved in debian 
or debian-based distros.

Thanking you for your time and cooperation. May all of you be successful in 
your missions, prosperous, free from sufferings, health, happy, and in peace, 
always!

Webocratically yours,
Dr. Sichendra Bista, Chief Architect and Secreatary General
eParliament.org: The Pioneering OPERATIONAL Model of Webocracy
Founder and President, Global Initiatives International Secretariat
GPO Box 10422, Kathmandu, Nepal. Web: http://giis.netfirms.com/anupa.htm
Tel: +977 (1) 478 1160/478 2321    Web: http://www.eParliament.org
Fax: +977 (1) 478 2321             Email: dr...@eP...
--------------------------------------------------------------------
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Re: bruby for 2.4.29-pre3 + speaker revival + but no pitch!

[Hugo V. <hvw...@ya...>]

--- Jean-Daniel Pauget <jd...@di...> wrote:

> On Wed, 5 Jan 2005, Hugo Vanwoerkom wrote:
> 
> <snip>

>     we need more debug ! :)
>     the problem with bruby is : it allows the
> machine to be used by two
>     people, so I cannot reboot mine every ten minute
> just for testing the
>     new kernel, because of the other user of the
> machine !
>     I cannot plan to dig for pitch correction before
> several days, sorry...


I noticed that in /drivers/char/keyboard.c in
kd_mksound 2 tests for SND_TONE and SND_BELL always
both are true. So I changed line 3564 in your rc3
patch to "else if" instead of "if" and pitch is back.

Regards,

Hugo




		
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Re: Two monitors, one at a time

[Alexandre T. <ate...@in...>]

Hi all,

Em Ter, 2005-01-04 às 13:08, Pedro Hernandez escreveu:
>  --- Alexandre Teixeira <ate...@in...> escribió: 
> > Hi friends,
> > 
> > I'm work with six-head. I attached XF86Config and gdm.conf for your
> > example.
> 
> For me at least, it would be interesting to know:
> * What hardware are you running (cpu, ram, motherboard)?
I'm running six-system with athlon 2.2, 512Mb and mother board GigaByte
(chipset Intel, sis and via)

> * Monitor cables are usually not very long. Have you extended them, 
>   and if so, how long and do you know how long such cables can they be?
It's very problem, I find that with 6 meters he functions well. In my
office we user in mode circle.


> * What window manager do you use?
Initialing with XFree86 4.3 and now Xorg.

> * How does the system respond if all user uses a lot of resource
>   consuming processes (mozilla, openoffice...) at the same time?
To my surprise this resource is very very fast, in percent more or less
20% more slow compared with standalone machine.

> Thanks for your time
> --ph


Regards
Alexandre

PS: Sorry my English and of delays of the reply
http://www.insignesoftware.com
http://www.insignesoftware.com/produtos/sixsystem.php
http://oraculo.insignesoftware.com/current/Six-System/Six-2.0/



> 
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> 

Re: Multi Head video cards

[Helge H. <hel...@hi...>]

Vineesh wrote:

>Hi,
> Is there any usefull link which describes the Multi head setup with
>frame buffers under the 2.6.9 or 2.6.7 and fedora core3 ?
>regards 
>   vineesh
>  
>
Take a look at archives for this mailing list, you'll find descriptions for
such a setup except that it isn't for fedora core3.

It isn't all that hard, assuming you already know how to set up an xserver
for fc3. 

Hardware:
Two sets of keyboards & mice, connected to the pc somehow.
A dualhead card, such as a G550.  Note that not all dualhead
cards supports a framebuffer for the second head, but the
matrox happens to do so.

Software:
A kernel with the ruby patch, and framebuffer support turned on for
the second head.  Optionally use fbcon for the second head,
but this may be broken.

A xserver.  A plain xserver will do for a dualhead setup on a G550.
A setup with two graphichs cards has an added requirement: a
xserver with the prefbusid/isolatedevice patch.  This is not necessary
with only one "device".

Setup:
Compile the patched kernel, and boot it. Verify that the second keyboard
attach to VT17 by issuing
cat /dev/tty17
Then check to see that you get some text by typing it in at the other
keyboard and press enter on it.  Don't proceed until this works,
you may have to experiment with the "dumbcon" kernel parameter.

First head:
Install ordinary xserver support for the card.  Make sure you don't
use the second head too, don't run xinerama.

Second head:
If you're using a matrox, it probably shows the same desktop as
the first head.  Get the "matroxset" utility and use it so the second head
shows the second framebuffer.  (It is not initialized yet, so it will
probably be black or full of crazy lines.)

Note that the first xserver use the config file
/etc/X11/XF86Config-4  (x.org use a different name)
Make a copy, such as XF86Config-4-fbdev in the
same directory.  Then modify it to be a config file
for your second head:

In the InputDevice section, change the mouse device to
whatever device your second mouse uses instead of the first.

In the Device section, specify the framebuffer driver instead of
the matrox driver.  Like this:
        Driver          "fbdev"
        Option          "UseFBDev"              "true"
        Option          "fbdev"                 "/dev/fb/1"

Finally, set up your system to start the second xserver.
FC3 probably does this a bit different than debian which I use.
Find wherever your default xserver is started  (gdm? xdm? kdm?)
and add an entry for the second server.

My first xserver starts with such a command:
/usr/X11R6/bin/X :0 vt7  -deferglyphs 16 -nolisten tcp -dpi 100
and the second one like this:
/usr/X11R6/bin/X :1 vt17 -deferglyphs 16 -nolisten tcp -xf86config 
XF86Config-4-fbdev

For testing purposes, try this last command on the command line.

Optimization:
It makes sense to run a font server such as xfs, and _not_ let the
xservers handle fonts themselves.  After all, you're running two
xservers now but both can use the same fontserver.  Having both xservers
handling fonts duplicates functionality.

Problems:
You will probably notice that any resolution change (or restarting)
of the first accelerated xserver will mess up the display for the second
one using the framebuffer.  This is fixable by re-running
matroxset.  Now, typing in a matroxset command isn't easy
when you can't see the screen, so I fixed this by setting up a hotkey
for my matroxset script in the window manager setup.  Details for doing
this depends entirely on what window manager you use.
A setup with several graphichs cards doesn't have this problem.


Helge Hafting

Re: bruby for 2.4.29-pre3 + speaker revival + but no pich!

[Jean-Daniel P. <jd...@di...>]

On Wed, 5 Jan 2005, Hugo Vanwoerkom wrote:

> Terrific! Works! But... No pitch! e.g following code:
> try it!
    you're right
> What do we have to do to get the pitch variation to
> work?
    we need more debug ! :)
    the problem with bruby is : it allows the machine to be used by two
    people, so I cannot reboot mine every ten minute just for testing the
    new kernel, because of the other user of the machine !
    I cannot plan to dig for pitch correction before several days, sorry...

--
    Jean-Daniel Pauget

    T=E9l: +33 (0) 676 952 746
    2, rue Andr=E9 PELCA
    50580 Denneville-Plage
    France

Re: bruby for 2.4.29-pre3 + speaker revival + but no pich!

[Hugo V. <hvw...@ya...>]

--- Jean-Daniel Pauget <jd...@di...> wrote:

> 
>     new bruby patch for 2.4.29-pre3 (this last
> kernel corrects some
>     security drills) and also speaker-correction as
> suggested on this list.
> 
>     available here :
> 	http://disjunkt.com/dualhead/
> 
>     the pacth itself :
> 
>
http://disjunkt.com/dualhead/bruby-2.4.29-pre3-20050104.bz2
> 
> 
>     right, I also corrected the timer creation
> accordingly and your
>     following troubles should disappear :


Terrific! Works! But... No pitch! e.g following code:
try it!

#include <sys/ioctl.h>	/* for ioctl() 	*/
#include <linux/kd.h> 	/* for KDMTONE 	*/
#include <sys/types.h>	/* for open() 	*/
#include <sys/stat.h> 	/* for open() 	*/
#include <fcntl.h>    	/* for open() 	*/
#include <sys/ioctl.h>	/* for ioctl() 	*/
#include <stdio.h>	/* for perror()	*/
#include <stdlib.h>	/* for exit()	*/
#include <unistd.h>	/* for close()	*/

int main( int argc, char **argv )
{
    int fd = open("/dev/tty1", O_WRONLY|O_NONBLOCK);
//    ioctl(fd, KDMKTONE, 0);


unsigned short msec = 100; /* This is for now ignored
*/
unsigned short freq = 450; /* The frequency of the
tone */

	for(int i=0; i<100; i++){
		freq += 5;
		/* Play sound */
		int rc = ioctl(fd, KDMKTONE, (msec << 16) | (1193180
/ freq));
		if(rc<0){
			perror("Error playing sound");
			close(fd);
			exit(-1);
		}
//		printf("%d ",i);
		usleep((unsigned long) msec + 1000);
//		ioctl(fd, KDMKTONE, 0);	// this here after
KDMKTONE makes a tick!
	}
//	printf("\n");
	close(fd);
	return 0;
}

What do we have to do to get the pitch variation to
work?

Hugo.








		
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PCI raiser Card

[Vineesh <vi...@hc...>]

hi all,
Any one used PCI raiser card with this multi terminal PC. if yes wat's
the result?.
regards
   vineesh

Re: Two monitors, one at a time

[Pedro H. <ph...@ya...>]

 --- Alexandre Teixeira <ate...@in...> escribió: 
> Hi friends,
> 
> I'm work with six-head. I attached XF86Config and gdm.conf for your
> example.

For me at least, it would be interesting to know:
* What hardware are you running (cpu, ram, motherboard)?
* Monitor cables are usually not very long. Have you extended them, 
  and if so, how long and do you know how long such cables can they be?
* What window manager do you use?
* How does the system respond if all user uses a lot of resource
  consuming processes (mozilla, openoffice...) at the same time?

Thanks for your time
--ph


		
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bruby for 2.4.29-pre3 + speaker revival

[Jean-Daniel P. <jd...@di...>]

    new bruby patch for 2.4.29-pre3 (this last kernel corrects some
    security drills) and also speaker-correction as suggested on this list.

    available here :
=09http://disjunkt.com/dualhead/

    the pacth itself :
=09http://disjunkt.com/dualhead/bruby-2.4.29-pre3-20050104.bz2


On Sat, 25 Dec 2004, Hugo Vanwoerkom wrote:

> Jean-Daniel:
>
> If you change these lines in your patch:
> 3295 (devcvte.c:1107)
> 10530 (vt_ioctl.c:697)
> 10547 (vt_ioctl.c:714)
> and make ->keyboard ->beeper instead
>
> Then you have the pcspeaker back, as per recent
> posting by Aivils.

    right, I also corrected the timer creation accordingly and your
    following troubles should disappear :

> WFM except that you have to tell gdm not to beep and
> you have to insert a "beeper turner offer" into the
> sequence of init that reboots the system, because gdm
> beeps anyway and he uses gdk_beep() that apparently
> has problems turning the beep off. Something like this
>     [.../...]

--
    Jean-Daniel Pauget

    T=E9l: +33 (0) 676 952 746
    2, rue Andr=E9 PELCA
    50580 Denneville-Plage
    France

Re: Dual head Dual bus pci vga card

[Vineesh <vi...@hc...>]

Dear Alivis,
 is this a PCI vga card or AGP card.? can u give the details
 regards
    vineesh




On Mon, 2005-01-03 at 14:14, Aivils wrote:
> On Friday 31 December 2004 08:47, Vineesh wrote:
> > Dear all,
> >   Is there any dual head dual bus PCI vga card which supports the multi
> > head setup?.
> > 
> >    Or can v achieve the same using some dual head agp cards?
> > regards
> Yes. Its video cards are very expensive (500 - 700 EUR)
> Sample: Matrox G450 X4 Quad Multi-Monitor (MMS)
>  The most compact four-chip multi-monitor solution for business markets.
> 
> 
> Aivils
> 
> 
> -------------------------------------------------------
> The SF.Net email is sponsored by: Beat the post-holiday blues
> Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
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Multi Head video cards

[Vineesh <vi...@hc...>]

Hi,
 Is there any usefull link which describes the Multi head setup with
frame buffers under the 2.6.9 or 2.6.7 and fedora core3 ?
regards 
   vineesh

Re: Dual head Dual bus pci vga card

[Aivils <ai...@un...>]

On Friday 31 December 2004 08:47, Vineesh wrote:
> Dear all,
>   Is there any dual head dual bus PCI vga card which supports the multi
> head setup?.
> 
>    Or can v achieve the same using some dual head agp cards?
> regards
Yes. Its video cards are very expensive (500 - 700 EUR)
Sample: Matrox G450 X4 Quad Multi-Monitor (MMS)
 The most compact four-chip multi-monitor solution for business markets.


Aivils

Re: Linuxconsole-dev digest, Vol 1 #934 - 1 msg

[Helge H. <hel...@ai...>]

On Sat, Jan 01, 2005 at 08:42:06AM -0800, yitzhak bar geva wrote:
> Multihead is an issue which interests me very much
> also. I have heard that some of the Matrox cards,
> G450, G550 are suitable. I recall Aivils having said
> that the multihead must have seperate PCI addresses
> for each head. Not all of the dual cards have seperate
> PCI addresses. Personally, I don't have experience
> with the Matrox cards, but I am very interested in
> hearing from someone who has used them.
> Yitzhak Bar Geva

You mean multihead with multiple keyboards, right?

It is possible with the G550, but it doesn't have multiple PCI
addresses.  That means you have to use the unaccelerated framebuffer 
xserver for the second head.  It is ok if you don't need high performance.
It is ok for webbrowsing and word processing, at least.  2D games may be ok,
3D games definitely not.

Helge Hafting

Re: Linuxconsole-dev digest, Vol 1 #934 - 1 msg

[yitzhak b. g. <yit...@ya...>]

Multihead is an issue which interests me very much
also. I have heard that some of the Matrox cards,
G450, G550 are suitable. I recall Aivils having said
that the multihead must have seperate PCI addresses
for each head. Not all of the dual cards have seperate
PCI addresses. Personally, I don't have experience
with the Matrox cards, but I am very interested in
hearing from someone who has used them.
Yitzhak Bar Geva
--- lin...@li...
wrote:

> Send Linuxconsole-dev mailing list submissions to
> 	lin...@li...
> 
> To subscribe or unsubscribe via the World Wide Web,
> visit
> 
>
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> or, via email, send a message with subject or body
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> than "Re: Contents of Linuxconsole-dev digest..."
> 
> > Today's Topics:
> 
>    1. Dual head Dual bus pci vga card (Vineesh)
> 

> ATTACHMENT part 3.1 message/rfc822 
> Subject: Dual head Dual bus pci vga card
> From: Vineesh <vi...@hc...>
> To: consoleML
> <lin...@li...>
> CC: alivis <ai...@un...>, rabi kumar saha
> <rk...@hc...>
> Date: Fri, 31 Dec 2004 12:17:22 +0530
> 
> Dear all,
>   Is there any dual head dual bus PCI vga card which
> supports the multi
> head setup?.
> 
>    Or can v achieve the same using some dual head
> agp cards?
> regards
>     vineesh
> 
> 
> 
> 
> > _______________________________________________
> Linuxconsole-dev mailing list
> Lin...@li...
>
https://lists.sourceforge.net/lists/listinfo/linuxconsole-dev
> 
> 

Dual head Dual bus pci vga card

[Vineesh <vi...@hc...>]

Dear all,
  Is there any dual head dual bus PCI vga card which supports the multi
head setup?.

   Or can v achieve the same using some dual head agp cards?
regards
    vineesh

Message subject

[Emile G. <xqq...@ya...>]

schantz hinman bendix scuba inadmissible 
sweden nowise sunshade 
bunsen grace spermatophyte carbohydrate mackenzie 

Re: Two monitors, one at a time

[Alexandre T. <ate...@in...>]

Hi friends,

I'm work with six-head. I attached XF86Config and gdm.conf for your
example.

Regards
Alexandre Penasso Teixeira

Em Qua, 2004-12-29 às 08:23, Pedro Hernandez escreveu:
>  --- Aivils <ai...@un...> escribió: 
> > On Monday 27 December 2004 02:19, Pedro Hernandez wrote:
> > > I am trying to set up a box with two monitors. I have compiled both
> > > 2.4.27 and 2.6.9 but reached best results with the latter. However,
> > I
> > > have some problems.
> > > 
> > > Using grub I have append=dumbcon=3 but when I try to start X with
> > a
> > > vt higher then 16, X says that the vt doesn't exist. Don't know if
> > it
> > > is important.
> > 
> > It is quite important.
> > # cat /proc/cmdline
> > command should show kernel startup commandline. You can make
> > sure dumbcon parameter.
> 
> Yes, the commandline for grub was wrong. now that it is corrected
> everything (that I have tried) is owrking just fantastic. It is really
> a great feature!
> 
> There is one thing though, in dmseg I have this:
> 
> Device 'i823650' does not have a release() function, it is broken and
> must be fixed.
> Badness in device_release at drivers/base/core.c:85
> 
> Do you know if it's related to the ruby patch? I haven't had time to
> check it out, but I'll try to next week.
> 
> 
> Thanks for your help, and thanks a lot for your work in ruby!!!
> 
> 
> --ph
> 
> 
> 	
> 	
> 		
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Re: Two monitors, one at a time

[Pedro H. <ph...@ya...>]

 --- Aivils <ai...@un...> escribió: 
> On Monday 27 December 2004 02:19, Pedro Hernandez wrote:
> > I am trying to set up a box with two monitors. I have compiled both
> > 2.4.27 and 2.6.9 but reached best results with the latter. However,
> I
> > have some problems.
> > 
> > Using grub I have append=”dumbcon=3” but when I try to start X with
> a
> > vt higher then 16, X says that the vt doesn't exist. Don't know if
> it
> > is important.
> 
> It is quite important.
> # cat /proc/cmdline
> command should show kernel startup commandline. You can make
> sure dumbcon parameter.

Yes, the commandline for grub was wrong. now that it is corrected
everything (that I have tried) is owrking just fantastic. It is really
a great feature!

There is one thing though, in dmseg I have this:

Device 'i823650' does not have a release() function, it is broken and
must be fixed.
Badness in device_release at drivers/base/core.c:85

Do you know if it's related to the ruby patch? I haven't had time to
check it out, but I'll try to next week.


Thanks for your help, and thanks a lot for your work in ruby!!!


--ph


	
	
		
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Re: Two monitors, one at a time

[Aivils <ai...@un...>]

On Monday 27 December 2004 02:19, Pedro Hernandez wrote:
> I am trying to set up a box with two monitors. I have compiled both
> 2.4.27 and 2.6.9 but reached best results with the latter. However, I
> have some problems.
>=20
> Using grub I have append=3D=94dumbcon=3D3=94 but when I try to start X wi=
th a
> vt higher then 16, X says that the vt doesn't exist. Don't know if it
> is important.

It is quite important.
# cat /proc/cmdline
command should show kernel startup commandline. You can make
sure dumbcon parameter.
=20
> The USB keyboard doesn't show up in /proc/bus/console/*/* (the serial
> is there and a line with VGA+.=20

Here should exist multiple directories
/proc/bus/console/00
/proc/bus/console/01

> I can use the USB with =93Dev Phys=94 so it=20
> isn't that dramatic). Am I missing something while compiling the
> kernel?

# cat /proc/bus/input/devices
shows USB devices ?

> When I start the second instance of X the first monitor goes black. I
> can switch back to the first, but then the second goes black etc.=20

Looks like You use standard kernel, which one not allow multiple
current /dev/ttyXX
# uname -a
shows kernel version.=20

> Since=20
> I haven't been able to find the patch for X nor a precompiled one, I am
> using unpatched X with Option "PciOsConfig" "1" in both config files. I
> also do =93echo =931=94 > /proc/bus/pci/hackvideo=94 before I start X. Wh=
at may
> be the cause (Kernel is wrong configured, the hardware, is it that I
> use unpatched X or something else)?
>=20
> Using sis (SiS 300 I think) and nv (GF400) drivers for the video cards
> and Debian Sarge. I have tried precompiled kernels from Andreas
> Schuldei: with 2.4.21 my box doesn't boot and with 2.6.0 X doesn't
> start. It seems that Schuldei have made precompiled Xfree86 available
> for debian, but not sure how to use or if it is good for sarge (can't
> use sid).

Motherboard built in video (SIS) will not work :(  You will borrow
addtional video and check it out.

Aivils

Re: Error on compilation

[Aivils <ai...@un...>]

On Saturday 25 December 2004 11:34, vineesh kumar wrote:
> Hi all,
>   I patched the original 2.6.9 with the bruby patch
> "patch-2.6.7-ruby.bz2" when i am doing make "modules" everything in
> fine.

Patch version must fit kernel version ;-)
http://www.kernelnewbies.org/

Aivils

Two monitors, one at a time

[Pedro H. <ph...@ya...>]

I am trying to set up a box with two monitors. I have compiled both
2.4.27 and 2.6.9 but reached best results with the latter. However, I
have some problems.

Using grub I have append=”dumbcon=3” but when I try to start X with a
vt higher then 16, X says that the vt doesn't exist. Don't know if it
is important.

The USB keyboard doesn't show up in /proc/bus/console/*/* (the serial
is there and a line with VGA+. I can use the USB with “Dev Phys” so it
isn't that dramatic). Am I missing something while compiling the
kernel?

When I start the second instance of X the first monitor goes black. I
can switch back to the first, but then the second goes black etc. Since
I haven't been able to find the patch for X nor a precompiled one, I am
using unpatched X with Option "PciOsConfig" "1" in both config files. I
also do “echo “1” > /proc/bus/pci/hackvideo” before I start X. What may
be the cause (Kernel is wrong configured, the hardware, is it that I
use unpatched X or something else)?

Using sis (SiS 300 I think) and nv (GF400) drivers for the video cards
and Debian Sarge. I have tried precompiled kernels from Andreas
Schuldei: with 2.4.21 my box doesn't boot and with 2.6.0 X doesn't
start. It seems that Schuldei have made precompiled Xfree86 available
for debian, but not sure how to use or if it is good for sarge (can't
use sid).

Any help would be much appreciated and my apologies if this post is
inappropriate for this list.

--ph


		
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Re: 2.4.x vs. 2.6.x

[Helge H. <hel...@ai...>]

On Fri, Dec 24, 2004 at 09:23:02AM -0800, Hugo Vanwoerkom wrote:
> Hi Team!
> 
> Yesterday I was watching the one video I watch on
> xine, The Pianist, on the secondary PCI MX-440
> monitor. And I noticed that xine was not complaining
> the system was too slow!
> 
> Googling I found this:
> http://groups.google.com.au/groups?hl=en&lr=&selm=34eU2-fv-17%40gated-at.bofh.it
> (on the still sane google!)
> 
> Sure enough: modifying wmcpuload to log its results,
> which calculates the total CPU load, I get:
> 
> 2.6.9            2.4.29
> 09:28:04 CPU=85% 09:20:15 CPU=48%...........-37%
> 09:28:05 CPU=84% 09:20:16 CPU=48% ...........-36%
> 09:28:06 CPU=84% 09:20:17 CPU=47%...........-37%
[...]
> 
> An average of 30% less CPU load on 2.4.29!
> This is all the same: Debian Sarge, nothing running
> but xine, except for the kernel differences!
> 
It is hard to get a valid comparison of cpu usage for
a 2.4.x kernel and a 2.6.x kernel.

The 2.6.x kernel use a 1000 HZ clock, while the
2.4.x kernel use a 100 HZ clock.  This means the 2.6.x
kernel gives a much more accurate result, 2.4.x has 10x
rounding errors when reporting time.  That can have dramatic
consequences when timing a task that have a quickly repeating pattern
of "hard work" and "waiting".  A video player is definitely such a case,
it works hard rendering a frame (or a few), then it waits a little
so the video won't play too fast.

2.6.X have a slightly higher
overehad due to the faster timer, but this overhead is small anyway.
Take a look at the kernel list archives for more detailed
explanations of the timing issues.  2.4.X probably seem
to use less cpu due to rounding errors.

The true overehead of the faster timer have been measured 
by running cpu hogs, and wasn't all that much.  It certainly
didn't steal 30% or so of the cpu.

Helge Hafting

Re: bruby for 2.4.29-pre2

[Hugo V. <hvw...@ya...>]

Jean-Daniel:

If you change these lines in your patch:
3295 (devcvte.c:1107)
10530 (vt_ioctl.c:697)
10547 (vt_ioctl.c:714)
and make ->keyboard ->beeper instead

Then you have the pcspeaker back, as per recent
posting by Aivils.

WFM except that you have to tell gdm not to beep and
you have to insert a "beeper turner offer" into the
sequence of init that reboots the system, because gdm
beeps anyway and he uses gdk_beep() that apparently
has problems turning the beep off. Something like this
will do:

#include <sys/ioctl.h>
#include <linux/kd.h>
#include <fcntl.h>

int main( int argc, char **argv )
{
    int fd = open("/dev/tty1", O_WRONLY|O_NONBLOCK);
    ioctl(fd, KDMKTONE, 0);
}	

Hugo




--- Jean-Daniel Pauget <jd...@di...> wrote:

> 
>     as kernel 2.4.29 provides several interesting
> harware improvement, not to
>     say also some igmp security flawness
> corrections, I put a cosmetic
>     bruby patch targeted to 2.4.29-pre2 on my site :
> 
>     http://disjunkt.com.local/dualhead/
> 
>     the patch itself :
>    
>
http://disjunkt.com.local/dualhead/bruby-2.4.29-pre2-20041217.bz2
> 
> --
>     Jean-Daniel Pauget
> 
>     Tél: +33 (0) 676 952 746
>     2, rue André PELCA
>     50580 Denneville-Plage
>     France
> 
> 
> 
>
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Error on compilation

[vineesh k. <vi...@hc...>]

Sorry, there's a mistake in the above mail, Error on compilation i used
the 2.6.9 patch,

Error on compilation

[vineesh k. <vi...@hc...>]

Hi all,
  I patched the original 2.6.9 with the bruby patch
"patch-2.6.7-ruby.bz2" when i am doing make "modules" everything in
fine.
But when i tried make bzImage, the following error is coming:
	 
	CHK     include/linux/version.h
	make[1]: `arch/i386/kernel/asm-offsets.s' is up to date.
 	CHK     include/linux/compile.h
	CC      drivers/char/vt_ioctl.o
	drivers/char/vt_ioctl.c: In function `switch_screen':
	drivers/char/vt_ioctl.c:637: warning: implicit declaration of 	function
`clear_buffer_attributes'
	drivers/char/vt_ioctl.c: In function `vt_ioctl':
	include/linux/vt_kern.h:288: sorry, unimplemented: inlining 	failed in
call to 'set_console': function body not available
	drivers/char/vt_ioctl.c:1174: sorry, unimplemented: called from here
	make[2]: *** [drivers/char/vt_ioctl.o] Error 1
	make[1]: *** [drivers/char] Error 2
	make: *** [drivers] Error 2

how can i overcome this
  regards
      vinu