Messages in this thread |  | | Subject | Athlon/K7-Opimisation problems | From | Carsten Leonhardt <> | Date | 09 Sep 2001 19:07:39 +0200 |
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Hi,
here's my data regarding the K7 optimisation problem.
Until last week I had a 1GHz Athlon with 133MHz FSB. I then bought a 1.4GHz Athlon, again 133MHz FSB.
I never had any problems with the 1GHz processor, but as soon as I stuck the 1.4GHz processor in, the kernel oopsed itself to oblivion. (That was with kernel 2.4.5-ac5, approximately)
I also noticed that the computer booted ok with the Debian bootfloppies, which use a kernel compiled for i386. So after several kernel compile/boot cycles, I found out that I had to disable K7 optimisation to make the system boot again.
The mainboard is a Tyan Trinity KT-A (S2390B) with a VIA KT133A chipset.
After reading here that it may be the PSU, I upgraded my 300W PSU to a 431W Enermax, which made no difference.
The only difference I can make out between the working and the non-working CPU is the internal clockspeed of the CPU and the stepping (old: 2, new: 4).
Appended is the output of /proc/cpuinfo (I sold the old CPU, but the guy who bought it sent me the output).
I really hope this helps someone. If anyone needs any more data, or wants me to test something, contact me.
Yours, leo
Old CPU:
processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 4 model name : AMD Athlon(tm) Processor stepping : 2 cpu MHz : 1012.530 cache size : 256 KB fdiv_bug : no hlt_bug : no sep_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr 6 mce cx8 sep mtrr pge 14 cmov pat 17 psn mmxext mmx fxsr 3dnowext 3dnow bogomips : 2018.51
New CPU:
processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 4 model name : AMD Athlon(tm) Processor stepping : 4 cpu MHz : 1400.098 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow bogomips : 2791.83 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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