Bug in SLES8 kernel 2.4.x freezing HP DL740/760

Bug in SLES8 kernel 2.4.x freezing HP DL740/760

[Oliver Antwerpen]

Hi out there,

If there is anybody out there using SLES8 on HP ProLiant DL740/760:
BEWARE!

SuSE has patched UNICON into the kernel which will cause these servers 
to hang when booted with vga=normal. The system will run fine in 
fb-mode, but not in plain text.

I cannot see, where this UNICON-patch comes from, it seems that is has 
been developed by some turbolinux-coders.

HP and SuSE have not been able to either fix this problem or at least 
warn someone about this bug, so I will do it now.
The bug is known since Nov 13th 2004.

If there should be anybody who can help, please contact me.

I hope this information will help someone to not run into deep trouble.

Oliver Antwerpen

Re: Bug in SLES8 kernel 2.4.x freezing HP DL740/760

[Matthias-Christian Ott]

Oliver Antwerpen wrote:

> Hi out there,
>
> If there is anybody out there using SLES8 on HP ProLiant DL740/760:
> BEWARE!
>
> SuSE has patched UNICON into the kernel which will cause these servers 
> to hang when booted with vga=normal. The system will run fine in 
> fb-mode, but not in plain text.
>
> I cannot see, where this UNICON-patch comes from, it seems that is has 
> been developed by some turbolinux-coders.
>
> HP and SuSE have not been able to either fix this problem or at least 
> warn someone about this bug, so I will do it now.
> The bug is known since Nov 13th 2004.
>
> If there should be anybody who can help, please contact me.
>
> I hope this information will help someone to not run into deep trouble.
>
> Oliver Antwerpen
>
>
> -
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>
Well if you don't need unicon, then remove the patch from the .spec file 
and rebuild the kernel (from the source rpm). Or report it their bug 
tracking system.

Matthias-Christian Ott

Re: Bug in SLES8 kernel 2.4.x freezing HP DL740/760

[Oliver Antwerpen]

Hi,

Matthias-Christian Ott schrieb:
> Oliver Antwerpen wrote:
> 
>> SuSE has patched UNICON into the kernel which will cause these servers 
>> to hang when booted with vga=normal. The system will run fine in 
>> fb-mode, but not in plain text.
>
> Well if you don't need unicon, then remove the patch from the .spec file 
> and rebuild the kernel (from the source rpm). Or report it their bug 
> tracking system.

My problem ist, that when I change .config, then I lose my support. So
SuSE or HP have to tell me to do so.

Oliver

Re: Bug in SLES8 kernel 2.4.x freezing HP DL740/760

[Bernd Petrovitsch]

On Wed, 2005-02-16 at 22:03 +0100, Oliver Antwerpen wrote:
> Matthias-Christian Ott schrieb:
> > Oliver Antwerpen wrote:
> >> SuSE has patched UNICON into the kernel which will cause these servers 
> >> to hang when booted with vga=normal. The system will run fine in 
> >> fb-mode, but not in plain text.
> >
> > Well if you don't need unicon, then remove the patch from the .spec file 
> > and rebuild the kernel (from the source rpm). Or report it their bug 
> > tracking system.
> 
> My problem ist, that when I change .config, then I lose my support. So
> SuSE or HP have to tell me to do so.

And they listen here to you?

	Bernd
-- 
Firmix Software GmbH                   http://www.firmix.at/
mobil: +43 664 4416156                 fax: +43 1 7890849-55
          Embedded Linux Development and Services

AMD 64 and Kernel AGPart support

[Marc Cramdal]

Hello,

I have an AMD 64 (gentoo compiled for amd64) and I would like to succeed in my 
video driver installation (ATI Radeon 9250 :-/). I would need the agpgart 
support for the Sis Chipset, but all the entry for agpgart are grayed, I 
can't change anything (Kernel 2.6.9, 2.6.10 ...)

So is it normal or a bug ?? , or am I making a mistake.

NB: one of my friends made the test, without AMD64 and exactly the same kernel 
he can check these options within agpgart...

Thanks,
Marc

Re: AMD 64 and Kernel AGPart support

[Paolo Ornati]

On Thu, 17 Feb 2005 15:08:32 +0100
Marc Cramdal <bruno.virlet@gmail.com> wrote:

> I have an AMD 64 (gentoo compiled for amd64) and I would like to
> succeed in my video driver installation (ATI Radeon 9250 :-/). I would
> need the agpgart support for the Sis Chipset, but all the entry for
> agpgart are grayed, I can't change anything (Kernel 2.6.9, 2.6.10 ...)
> 
> So is it normal or a bug ?? , or am I making a mistake.


I have an AMD Athlon64 with Radeon 9200SE on VIA K8T800 Chipset... and
AGP works fine with only CONFIG_AGP_AMD64 enabled.

The fact is that these AMD processors have an "on-CPU northbridge" for
AGP, and the support for the various external AGP bridges (VIA, SiS,
Nvidia) is provided directly in "drivers/char/agp/amd64-agp.c" driver
(selected by CONFIG_AGP_AMD64).

Reading "drivers/char/agp/amd64-agp.c" I can see that "SIS 755" chipset
is supported.

If you have a chipset that isn't supported you can always try with the
"agp_try_unsupported=1" option (as stated in the HELP of
CONFIG_AGP_AMD64).

> 
> NB: one of my friends made the test, without AMD64 and exactly the
> same kernel he can check these options within agpgart...

You don't have to be on a i386 to see the options avaiable for i386...
just do a "make menuconfig ARCH=i386" and you are done!

But if you are on x86_64, why do you want to enable drivers for other
architectures?

-- 
	Paolo Ornati
	Gentoo Linux (kernel 2.6.10-gentoo-r7)

Re: ________________: Re: AMD 64 and Kernel AGPart support

[Paolo Ornati]

On Thu, 17 Feb 2005 15:42:50 +0100
netsin@163.com wrote:

> ÄúºÃ£º
>     ÎÒÒÑ_­ÊÕµ_ÄúµÄÀ_ÐÅ

and... what does this means?

-- 
	Paolo Ornati
	Gentoo Linux (kernel 2.6.10-gentoo-r7)

Re: ________________: Re: AMD 64 and Kernel AGPart support

[Parag Warudkar]

On Thursday 17 February 2005 10:10 am, Paolo Ornati wrote:
> > ÄúºÃ£º
> >     ÎÒÒÑ_­ÊÕµ_ÄúµÄÀ_ÐÅ
>
> and... what does this means?
SPAM. This looks to me like a new way of spamming though, replying to valid 
mailing list messages. (I too received couple of these in reply to my 
messages.)

Parag

Re: ________________: Re: AMD 64 and Kernel AGPart support

[Paolo Ornati]

On Thu, 17 Feb 2005 10:26:55 -0500
Parag Warudkar <kernel-stuff@comcast.net> wrote:

> SPAM. This looks to me like a new way of spamming though, replying to
> valid mailing list messages. (I too received couple of these in reply
> to my messages.)

agrrr.. and I've done a mistake replying!

-- 
	Paolo Ornati
	Gentoo Linux (kernel 2.6.10-gentoo-r7)

spam mails with the same Message-ID

[Adrian Bunk]

On Thu, Feb 17, 2005 at 10:26:55AM -0500, Parag Warudkar wrote:
> On Thursday 17 February 2005 10:10 am, Paolo Ornati wrote:
> > > ÄúºÃ£º
> > >     ÎÒÒÑ_­ÊÕµ_ÄúµÄÀ_ÐÅ
> >
> > and... what does this means?
> SPAM. This looks to me like a new way of spamming though, replying to valid 
> mailing list messages. (I too received couple of these in reply to my 
> messages.)

The most interesting fact seems to be that these spam messages have the 
same message ID as the original Mails.

If you run a program that automatically discards duplicate mails and the 
spam message reaches you faster than the original email through 
linux-kernel (which seems to often happen with these mails), the 
original email will be discarded. 

I don't know whether these are known attacks, but the automatic 
discarding of duplicated emails offers attackers nice opportunities if 
they know a message ID (as with these emails) or can guess the
message ID (since many MUAs have predictable message IDs, an attacker C
could use this to suppress a message from person A to person B by 
sending an email with the message ID to person B bevor person B gets 
the email from person A).

> Parag

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

Re: spam mails with the same Message-ID

[Matthias-Christian Ott]

Adrian Bunk wrote:

>On Thu, Feb 17, 2005 at 10:26:55AM -0500, Parag Warudkar wrote:
>  
>
>>On Thursday 17 February 2005 10:10 am, Paolo Ornati wrote:
>>    
>>
>>>>ÄúºÃ£º
>>>>    ÎÒÒÑ_­ÊÕµ_ÄúµÄÀ_ÐÅ
>>>>        
>>>>
>>>and... what does this means?
>>>      
>>>
>>SPAM. This looks to me like a new way of spamming though, replying to valid 
>>mailing list messages. (I too received couple of these in reply to my 
>>messages.)
>>    
>>
>
>The most interesting fact seems to be that these spam messages have the 
>same message ID as the original Mails.
>
>If you run a program that automatically discards duplicate mails and the 
>spam message reaches you faster than the original email through 
>linux-kernel (which seems to often happen with these mails), the 
>original email will be discarded. 
>
>I don't know whether these are known attacks, but the automatic 
>discarding of duplicated emails offers attackers nice opportunities if 
>they know a message ID (as with these emails) or can guess the
>message ID (since many MUAs have predictable message IDs, an attacker C
>could use this to suppress a message from person A to person B by 
>sending an email with the message ID to person B bevor person B gets 
>the email from person A).
>
>  
>
>>Parag
>>    
>>
>
>cu
>Adrian
>
>  
>
The spamers become always cleverer :-) .

Matthias-Christian Ott

Sis760 chipset support

[Marc Cramdal]

Hello,

I can't make agpgart working (even when trying the agp_try_unsupported) 
option. I have an AMD64 3000+ with a Sis760 chipset and agp doesn't seem to 
be supported : I only get this with dmesg : "Linux agpgart interface v0.100 
(c) Dave Jones". That's all...

So, is Sis760 chipset supported for agpgart under linux kernel ? if not, is 
there plan to be, tweaks to do (I even tried the Sis Chipset driver 
for !x86_64 by removing this entry in KConfig ... ) ?

Marc

Re: Sis760 chipset support

[Dave Jones]

On Fri, Feb 18, 2005 at 07:07:16PM +0100, Marc Cramdal wrote:
 > Hello,
 > 
 > I can't make agpgart working (even when trying the agp_try_unsupported) 
 > option. I have an AMD64 3000+ with a Sis760 chipset and agp doesn't seem to 
 > be supported : I only get this with dmesg : "Linux agpgart interface v0.100 
 > (c) Dave Jones". That's all...
 > 
 > So, is Sis760 chipset supported for agpgart under linux kernel ? if not, is 
 > there plan to be, tweaks to do (I even tried the Sis Chipset driver 
 > for !x86_64 by removing this entry in KConfig ... ) ?
 > 

amd64 should be using the amd64-agp driver, as your agpgart is on-cpu
on that platform.

		Dave