IBM Thinkpad T20 - 700MHz. The kernel sees it as a 700MHz - from /var/log/messages: Apr 27 00:16:37 atlantis kernel: Detected 697.130 MHz processor. That seems consistent (always 697.xxx) but - [root@atlantis ~]# grep "MHz" /proc/cpuinfo cpu MHz : 550.000 [root@atlantis ~]# I went through the BIOS and set everything to maximum performance, in case it maybe thought it wasn't plugged in - no change. I added "acpi=off" to the boot options - and indeed, it booted without acpi, but /proc/cpuinfo still reports 550 MHz. Does anyone know what might be causing this? The CPU itself does support throttling (wanted when not connected to AC power) - and it seems that something is in fact causing it to throttle, if memory serves - 550MHz is what it throttles to when I disconnect it from AC - but now, I've told the bios to use maximum performance under all conditions and I'm not getting the full CPU speed which the kernel does correctly detect. Any suggestions? This hardware is slow enough as it is ;)
