This remains with a different kernel (3.11) and a totally different laptop, bios and trackball (though it's an identical model - I have two). I don't think the model is that relevant, as it also applies to a generic USB keyboard I'm using.
I'm now in a position to replicate the bug on two different laptops - a Toshiba R600 and a Dell N5110 eliminating the BIOS issue as a possible cause I think. It's been a latent bug for me as it's a rare occasion that I'm using external keyboard and trackball WITHOUT power - normally those things go together when I'm docked at a desk in the office. However, I just rediscovered the bug when a colleague removed my power without me noticing. Another line of investigation is the use of powertop scripts for auto-unloading of USB modules as listed in the duplicate bug I've filed... https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1215476 ...though this is expected to 'just work' and indeed the bug remains even when auto-unloading is explicitly deactivated (though there may be a bug there I suppose - the power/control sys bus files report that the unloading config has changed from 'auto' to 'on', but it still seems to disconnect the devices). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1060029 Title: Wired trackball fails while on battery power (module unload issue?) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1060029/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
