I'm seeing the exact same issue on my T61. Adding the EnableBrightnessControl=1 line to the Screen section of xorg.conf appears to fix it.
Is it possible to enable the T420-quirks for T61 and R61 as well?
I'm seeing the exact same issue on my T61. Adding the EnableBrightnes sControl= 1 line to the Screen section of xorg.conf appears to fix it.
Is it possible to enable the T420-quirks for T61 and R61 as well?