Hi
I encounter a problem with my Amilo M1425 which begins to drive me crazy.
The computer is 3 years old. I have used it for many years without any problem : I had a dual boot Ubuntu Dapper / WinXP, and the frequency of the CPU was fine (600Mhz when idle and up to 1.70Ghz at full charge).
Last week I decided to replace my old Dapper installation by a Debian Lenny (testing). Everything went fine, but the CPU was never able to go faster than 600Mhz.
In the begin I thought it was a problem with Debian, so I searched and I managed to make cpufreq work. With it, I was able to activate the "ondemand" mode, but the range of the frequencies was between 75Mhz and 600Mhz ! (that did work though : when idle my CPU was at 75Mhz, quite surprising because I believed it could never go bellow 600Mhz. Anyway...)
Cpufreq kept on telling me that my CPU wasn't able to support a frequency > 600Mhz.
So then I tried to boot on XP. Although I didn't change anything in Windows configuration (I almost never use XP), the CPU was also stuck at 600Mhz !
I can't see how my work with Debian could affect XP, unless Debian messed up with some hardware configuration which was then "hardware-saved".
But here comes the most puzzling : I have a couple a live-CD of different versions of Ubuntu, so I ran some tests.
With Dapper, the CPU is able to go up to 1.7Ghz.
With Hardy, it is stuck at 600Mhz.
This makes absolutely no sense to me. I can believe there might be a regression with new versions of Debian that aren't able to use correctly my CPU, but in that case why would XP be stuck too ?
I flashed the BIOS (it was already the latest version) but it didn't change anything. Since Dapper works fine, it doesn't seem to be a BIOS issue, right ?
(Bonus question : I tried the tip "press 10s the power button" for hardware reset but I don't know if this makes a clear-cmos with the M1425. Since I flashed the bios, it must have done a clear-cmos, no ? Or should I open the computer to find some jumper...?)
I am sorry for this long message, but I really need your help.
Any suggestions or ideas are more than welcomed, thank you in advance.