Does the power off feature still work for you (and other readers inflicted with this shen^H^H^H^Hsensor switch problem)?

I'm not exactly sure what you mean by this question, but I will tell you my experience:

Even though I put the player into "force DC/CAR" mode, when I turned off my ignition, the player didn't shut off.

I assume it's because the PIC that senses the ignition wire behaves differently between AC and DC mode. If the PIC thinks it's in AC mode, then it ignores the ignition wire. This is all controlled at the hardware/PIC level, so Mark's kernel code can't do anything about it.

In fact, for a moment, I toyed with the idea of using mark's new "if tuner=0 then force DC/CAR" feature as a permanent solution, and just not bother repairing the jack. Until I realized that it still wouldn't solve this particular problem.