Bugtraq mailing list archives

Re: Cyrix bug: freeze in hell, badboy


From: ragnar () REDESTB ES (Ragnar Hojland Espinosa)
Date: Sun, 7 Feb 1999 02:18:25 +0100


On Fri, 5 Feb 1999, John Byrne wrote:
related to the 75Mhz Cyrix Bus.  I recommend that if you are running that
speed, you step it down to 66mhz.  The 75 mhz bus was built to allow faster

This is a 66Mhz bus; apparently it makes no difference, as previously
noted here by rho () SDF lonestar org.  Here's a quick summary of the emails
I recieved.

Kernel version is neccessary due bugs in the cpu identification of some
versions.. only 3 CPUs that don't freeze (kernel version is there to
know if a buggy cpu id is possible).

Thanks to all who answered, and maybe you want to email
tech_support () cyrix com and ask for a workaround.

N
This is a 266MHz Media GXm/5520 in a CTX notebook.
cpu             : 586
model           : Cyrix MediaGXtm MMXtm Enhanced
vendor_id       : CyrixInstead
stepping        : 5.2, core/bus clock ratio: 5x

N
2.1.129 (bad cpu id.. model 2 stepping 7?)
model: 82
model name      : 6x86MX 2.5x Core/Bus Clock
stepping: 2.7

N
2.2.1
model: 2
model name      : 6x86MX 2.5x Core/Bus Clock
stepping: 7

Y
2.2.1
model: 2
model name      : 6x86MX 3x Core/Bus Clock
stepping: 6

Y
2.2.1
model: 1
model name      : 6x86MX 2.5x Core/Bus Clock
stepping: 4

Y
2.2.1
model: 1
model name      : 6x86MX 2.5x Core/Bus Clock
stepping: 4

Y
unknown version, but prolly good cpuid (6x86MX233)
model: 2
model name      : 6x86MX 2.5x Core/Bus Clock
stepping: 6

Y
2.1.129
model: 1
model name      : 6x86MX 2x Core/Bus Clock
stepping: 3

Y
2.0.35
model: 6x86MX
stepping: 1.3

Y
2.0.37pre5
model: 6x86MX
stepping: 2.6, core/bus clock ratio: 2.5x

Y
2.0.36
model: 6x86MX
stepping: 2.6, core/bus clock ratio: 2.5x

Y
Unknown version
model: 4
model name      : 6x86L 2x Core/Bus Clock
stepping: 2

Y
2.1.109
model           : 6x86L 2x Core/Bus Clock
stepping        : 4.2

Y
2.2.0-pre8
model: 4
model name      : 6x86L 2x Core/Bus Clock
stepping: 2

Y
Unknown version
model: 6x86L
stepping: 4.2, core/bus clock ratio: 2x

Y
2.1.131
model: 2
model name      : 6x86 2x Core/Bus Clock
stepping: 6                     

Y
2.1.128
model: 49
model name      : 6x86 2x Core/Bus Clock
stepping: 2.7

Y
2.1.129
model: 49
model name      : 6x86 2x Core/Bus Clock
stepping: 2.7

Y
2.2.0
model           : 2
model name      : 6x86 2x Core/Bus Clock
stepping        : 5

Y
2.2.1
model           : 2
model name      : 6x86 2x Core/Bus Clock
stepping        : 7

Y
Freezes my older Acer Aspire machine like an ice cube.

--
____/|  Ragnar Hojland  (ragnar () lightside ddns org)      Fingerprint  94C4B
\ o.O|                                                   2F0D27DE025BE2302C
 =(_)=  "Thou shalt not follow the NULL pointer for      104B78C56 B72F0822
   U     chaos and madness await thee at its end."       hkp://keys.pgp.com



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