[Bug 329000] Re: Ubuntu 8.10 unable to find suitable kernel for Cyrix 6x86MX CPU

[Rolf Leggewie]

I will close this ticket in about two weeks, please reconfirm.

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Title:
  Ubuntu 8.10 unable to find suitable kernel for Cyrix 6x86MX CPU

Status in “base-installer” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: base-installer

  When I attempted to install Ubuntu 8.10 server on my old IBM 6x86MX
  PR200 system the installation would halt when the installer attempted
  to choose a suitable kernel (and failed to locate one). Thanks to a
  virtually identical report on the ubuntu forum -
  http://ubuntuforums.org/showthread.php?t=1044091 - I was able to work
  around the problem by adding a "CyrixInstead" test to /usr/lib/base-
  installer/kernel.sh during the installation.

  The following points are raised by this:

  1) Unidentified CPUs are configured as 486 - not unreasonable if the installer could actually locate a suitable kernel for 486s but it appears that it cannot. I do not have a working i486DX system to test.
  2) When I tried making my 6x86MX identify as a 686, a kernel was found and installed but when the system booted the kernel would not start due to the lack of PAE support. This is a problem with Ubuntu server and many CPUs (see bug 227869 for details). I chose to install Ubuntu server rather than desktop as my computer only has 128MB of RAM.
  3) I finally made kernel.sh report 586 for my 6x86 and I now have a functional system.

  Details of my system:

  david at cyrix:~$ cat /proc/cpuinfo
  processor       : 0
  vendor_id       : CyrixInstead
  cpu family      : 6
  model           : 1
  model name      : 6x86MX 2x Core/Bus Clock
  stepping        : 4
  cpu MHz         : 149.917
  fdiv_bug        : no
  hlt_bug         : no
  f00f_bug        : no
  coma_bug        : yes
  fpu             : yes
  fpu_exception   : yes
  cpuid level     : 1
  wp              : yes
  flags           : fpu de tsc msr cx8 pge cmov mmx cyrix_arr up
  bogomips        : 299.83
  clflush size    : 32
  power management:
  david at cyrix:~$ lspci
  00:00.0 Host bridge: Silicon Integrated Systems [SiS] 5597 [SiS5582] (rev 02)
  00:01.0 ISA bridge: Silicon Integrated Systems [SiS] SiS85C503/5513 (LPC Bridge) (rev 01)
  00:01.1 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev d0)
  00:01.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 10)
  00:09.0 VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 01)
  00:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
  00:0d.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
  00:0f.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
  david at cyrix:~$ lsb_release -rd
  Description:    Ubuntu 8.10
  Release:        8.10
  david at cyrix:~$ uname -a
  Linux cyrix 2.6.27-11-generic #1 SMP Thu Jan 29 19:24:39 UTC 2009 i686 GNU/Linux

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