I have a ThinkPad T430 (2347G2G) and tried to optimize the power consumption with PowerTOP. It gave me the tip to activate CONFIG_USB_SUSPEND in my kernel to save up to 1 Watt. I followed the tip, built the kernel and after restarting the system, I always received kernel panics on loading the UHCI module. So I restarted with the kernel parameter "nousb" and rebuilt the kernel again (The next time I will do a backup before -.-). Unfortunately I don't have a log of this. I don't know if this is a kernel issue or if upstream (Intel who is the maintainer of powertop) should be warned about this issue.
It's definitely a kernel issue. 1) Please post your `emerge --info' output in a comment. 2) Please attach your `lsusb -v' output to this bug report. 3) Please attach the (faulty) kernel .config to this bug report. 4) Please post any relevant dmesg output from the kernel panic.
I found the problem ... I linked with ld.gold. Redone the kernel modules with ld.bfd worked. Sorry for that.
