** Summary changed:
- ondemand CPU scaling not working correctly, ThinkPad T43, Ubuntu 9.10
+ ondemand CPU scaling not working correctly, ThinkPad T43, Ubuntu 9.10/10.4
** Tags added: lucid
** Tags removed: needs-upstream-testing
** Summary changed:
- ondemand CPU scaling not working correctly
Upgrade to 10.04. Everything works.
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ondemand CPU scaling not working correctly, ThinkPad T43, Ubuntu 9.10
https://bugs.launchpad.net/bugs/519142
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Additional info to #9
ubuntu 9.10, kernelversion 2.6.31-20
Now testing with AC plugged in, different behaviour,
setting to fixed 1,6 => 50% 1,33, 50% 1,6 GHz
fixed 1,33 => 50% 1,33, 50% 0,8 GHz.
As it seems, the little atom hasn't been running for full speed for
quite a while.
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ondemand CPU s
same on aspire one a110.
after bootup (with ondemand), powertop shows 50% 1,6 GHz, 50% 800 Mhz.
(??)
selecting fixed frequency from gnome-tool works fine,
selecting back to ondemand:
if fixed 800 Mhz was selected before, => 100% 800 Mhz
if 1,6 GHz was selected before back to 50%/50% as above
Hi sotirovlyu,
If you could also please test the latest upstream kernel available that would
be great. It will allow additional upstream developers to examine the issue.
Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the
upstream kernel, please remove the 'needs-u
Important to note is that PHC kernels didn't solve for me the problem
permanently, it looked only at first place solved, but then it became
the same like with the standard Ubuntu kernels.
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ondemand CPU scaling not working correctly, ThinkPad T43, Ubuntu 9.10
https://bugs.launchpad.net/bugs/5191
No, the ondemand CPU scaling behaves the same way both in battery and in
AC mode - i.e. it doesn't work correctly.
It's not only about the output of cpufreq-info (or some system values in
/proc). Sometimes it shows "hardware limits: 800 MHz - 2.00 GHz",
sometimes "hardware limits: 800 MHz - 800 MH
