Re: Anybody running 2.4 and AMD???

2002-01-22 Thread Rich C


- Original Message -
From: Michael Costolo [EMAIL PROTECTED]
To: GNHLUG [EMAIL PROTECTED]
Sent: Monday, January 21, 2002 9:43 PM
Subject: Re: Anybody running 2.4 and AMD???


 Hmm.  I'm running a 1 GHz Athlon with kernel version 2.4.3 (a la Mandrake
 8.0) and a 32 MB NVidia TNT2 AGP video card (and XFree 4.0.3 if it
matters)
 on an ABIT KT7A-RAID mobo with 512 MB RAM.  I have not experienced any
random
 lockups.  I know nothing about the stock Mandrake kernel and haven't tried
 rolling my own yet (but I will, once I learn more about the process).


You don't need to recompile to avoid the bug. From the article:

Fortunately, there is a quick and easy fix for this problem. If you have
been experiencing lockups on your Athlon, Duron or Athlon MP system when
using AGP video, try passing the mem=nopentium option to your kernel (using
GRUB or LILO) at boot-time. This tells Linux to go back to using 4K pages,
avoiding this CPU bug.

 Are these lockups truly random?  The article doesn't go into too much
detail.

If you've read the article, you know as much as I do, except here is another
link to AMD's site,

http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_871,00.html

then click on the Microsoft Windows 2000 patch for AGP applications. AMD
describes it as a Windows 2000 problem, but in reality it is a problem which
affects any OS that uses the extended paging feature of Pentium class and
later processors. AMD claims that  the patch is not needed for Windows XP,
but since AMD and Microsoft have both known about this bug since September
of 2000, I'm willing to bet that bug-detecting code is already present in
XP.

As for why some with the deadly combination don't see lockups (and my post
was merely to inform, not to make people defensive about their systems) I
can only speculate that because the bug has to do with shared memory for AGP
applications, it may only manifest itself on graphics-intensive programs,
like 3d modelling or games. Since there aren't too many killer 3d games for
Linux yet, my guess is that not many people will actually see the bug in
normal use.

Rich Cloutier
President, C*O
SYSTEM SUPPORT SERVICES
www.sysupport.com



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Re: Anybody running 2.4 and AMD???

2002-01-22 Thread Steven W. Orr

On Tue, 22 Jan 2002, Rich C wrote:

=
=- Original Message -
=From: Michael Costolo [EMAIL PROTECTED]
=To: GNHLUG [EMAIL PROTECTED]
=Sent: Monday, January 21, 2002 9:43 PM
=Subject: Re: Anybody running 2.4 and AMD???
=
=
= Hmm.  I'm running a 1 GHz Athlon with kernel version 2.4.3 (a la Mandrake
= 8.0) and a 32 MB NVidia TNT2 AGP video card (and XFree 4.0.3 if it
=matters)
= on an ABIT KT7A-RAID mobo with 512 MB RAM.  I have not experienced any
=random
= lockups.  I know nothing about the stock Mandrake kernel and haven't tried
= rolling my own yet (but I will, once I learn more about the process).
=
=
=You don't need to recompile to avoid the bug. From the article:
=
=Fortunately, there is a quick and easy fix for this problem. If you have
=been experiencing lockups on your Athlon, Duron or Athlon MP system when
=using AGP video, try passing the mem=nopentium option to your kernel (using
=GRUB or LILO) at boot-time. This tells Linux to go back to using 4K pages,
=avoiding this CPU bug.
OK. I'm confused here. Is it that case that in certain circumstances the 
linux kernel will try to make a pagesize equal to 4 MEGABYTES and this 
patch restores it back down to 4 KILOBYTES? Everything I know about OS's 
says that something is badly out of whack. 

(I'm about to take delivery of a ULB with 1 gig of RAM and a pair of 
1600MHz Athlons.)

-- 
-Time flies like the wind. Fruit flies like a banana. Stranger things have -
-happened but none stranger than this. Does your driver's license say Organ
-Donor?Black holes are where God divided by zero. Listen to me! We are all-
-individuals! What if this weren't a hypothetical question? [EMAIL PROTECTED]



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Re: Anybody running 2.4 and AMD???

2002-01-21 Thread Rodent of Unusual Size

* On 2002-01-21 at 17:14,
  Rich C [EMAIL PROTECTED] excited the electrons to say:
 
 And experiencing random lockups?

No, I'm just having them with 2.4.2 on a ThinkPad T21.
I thought it was because of the S3 video chipset, and
adding an 'Option ShadowStatus' to XF86Config had fixed
it, but n -- it hung just a few minutes ago. :-(

Still looking for the answer; maybe a newer kernel.. :-)
-- 
#kenP-)}

Ken Coar, Sanagendamgagwedweinini  http://Golux.Com/coar/
Author, developer, opinionist  http://Apache-Server.Com/

Millenium hand and shrimp!

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Re: Anybody running 2.4 and AMD???

2002-01-21 Thread Rodent of Unusual Size

* On 2002-01-21 at 17:27,
  Rodent of Unusual Size [EMAIL PROTECTED] excited the electrons to say:
 
 No, I'm just having them with 2.4.2 on a ThinkPad T21.
 I thought it was because of the S3 video chipset, and
 adding an 'Option ShadowStatus' to XF86Config had fixed
 it, but n -- it hung just a few minutes ago. :-(
 
 Still looking for the answer; maybe a newer kernel.. :-)

On looking at the note where I found the ShadowStatus solution,
I see that I should have added it to XF86Config-4, not
plain old XF86Config..  {sigh}  Added now, let's see if this
sucker stays up.
-- 
#kenP-)}

Ken Coar, Sanagendamgagwedweinini  http://Golux.Com/coar/
Author, developer, opinionist  http://Apache-Server.Com/

Millenium hand and shrimp!

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Re: Anybody running 2.4 and AMD???

2002-01-21 Thread Michael Costolo

Hmm.  I'm running a 1 GHz Athlon with kernel version 2.4.3 (a la Mandrake 
8.0) and a 32 MB NVidia TNT2 AGP video card (and XFree 4.0.3 if it matters) 
on an ABIT KT7A-RAID mobo with 512 MB RAM.  I have not experienced any random 
lockups.  I know nothing about the stock Mandrake kernel and haven't tried 
rolling my own yet (but I will, once I learn more about the process).  

Are these lockups truly random?  The article doesn't go into too much detail.

-Mike-

On Monday 21 January 2002 05:12 pm, Rich C wrote:
 And experiencing random lockups?

 This article might be of some help...

 http://www.linuxtoday.com/news_story.php3?ltsn=2002-01-21-001-20-NW-KN

 Rich Cloutier
 President, C*O
 SYSTEM SUPPORT SERVICES
 www.sysupport.com

--
Michael A. Costolo

History teaches that grave threats to liberty often come in times of 
urgency, when constitutional rights seem too extravagant to endure.
- Justice Thurgood Marshall, 1989

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Re: Anybody running 2.4 and AMD???

2002-01-21 Thread Jerry Feldman

I have an AMD Athalon chip in my desktop system. I've had it up for two 
weeks with no problems, and the only reason I rebooted was to upgrade from 
2.4.10 to 2.4.16 because I needed the USB support.
Rich C wrote:
 And experiencing random lockups?
 
 This article might be of some help...
 
 http://www.linuxtoday.com/news_story.php3?ltsn=2002-01-21-001-20-NW-KN
 
 Rich Cloutier
 President, C*O
 SYSTEM SUPPORT SERVICES
 www.sysupport.com
 
 
 
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-- 
Jerry Feldman [EMAIL PROTECTED]
Boston Linux and Unix user group
http://www.blu.org PGP key id:C5061EA9
PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9



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