On Tue, Apr 21, 2015, at 16:04, Andrew Wienecke wrote:
> This was working previously, was working during the netboot install,
> is no longer working. Fixes online didn't. I'm going to try a few more
> things, but this is about all the useful stuff I'm aware that I should
> provide, let me know if you need more.
>
> [ 3.470352] thinkpad_acpi: ThinkPad ACPI Extras v0.25 [ 3.470360]
> thinkpad_acpi: http://ibm-acpi.sf.net/ [ 3.470363] thinkpad_acpi:
> ThinkPad BIOS GSET60WW (2.05 ), EC unknown [ 3.470366] thinkpad_acpi:
> Lenovo ThinkPad X140e, model 20BLS00400 [ 3.476142] thinkpad_acpi:
> Unsupported brightness interface, please contact
> ibm-acpi-devel@lists.sourceforge.net [ 3.483092] thinkpad_acpi: radio
> switch found; radios are enabled [ 3.483124] thinkpad_acpi: possible
> tablet mode switch found; ThinkPad in laptop mode [ 3.483148]
> thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness
> control, supported by the ACPI video driver [ 3.483151] thinkpad_acpi:
> Disabling thinkpad-acpi brightness events by default...
Well, brightness control for the X140e goes through the GPU drivers, and
not thinkpad-acpi. Check the ATI Radeon driver stack, etc.
IOW, the issue is unlikely (but not impossible) to be related to
thinkpad-acpi.
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