I'm hitting the same problem on an X61. Brightness stuck on maximum, since latest kernel upgrade.
The machine is running 2.6.27-11-generic.
I've tried to install the kernels at the URL you provided, but the packmage installer reports "Error: a later version is already installed", and stops. Changing thinkpad_acpi module options has no effect; I've tried reloading the module with all plausible options, no difference.
I know there are BIOS upgrades for the X61 and I'll try that if there's no other option. Do you have any other kernel URIs I can try?
@Andy,
I'm hitting the same problem on an X61. Brightness stuck on maximum, since latest kernel upgrade.
The machine is running 2.6.27-11-generic.
I've tried to install the kernels at the URL you provided, but the packmage installer reports "Error: a later version is already installed", and stops. Changing thinkpad_acpi module options has no effect; I've tried reloading the module with all plausible options, no difference.
I know there are BIOS upgrades for the X61 and I'll try that if there's no other option. Do you have any other kernel URIs I can try?
Thanks!