Public bug reported: to reproduce this bug: as root run udevmonitor --kernel --environment and then plugin some usb device.
with kernels before 2.6.22 you see some event that has both DEVICE and MODALIAS set. with kernel 2.6.22 there is no such event anymore, only one with DEVICE but without MODALIAS and one with MODALIAS but without DEVICE. This breaks user space applications such as openct, that depend on the uevent mechanism for hotplug support. I believe the kernel change causing this is here: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=9f8b17e643fe6aa505629658445849397bda4e4f I reported the bug here: http://lkml.org/lkml/2007/8/17/140 and got feedback with a patch here: http://lkml.org/lkml/2007/8/17/193 the patch fixes the problem mostly. I would also need PRODUCT support so that openct would continue to work unchanged, but I can extract the same information from MODALIAS. So with an updated openct package I could deal with this. Note: without above patch openct has no way to deal with the new situation (or only quite complex solutions like remembering old events and correlating them, or easier but sad: write a daemon that monitors usb all the time ourself). But with this patch we can rely on kernel watching usb for us, keeping us informed on new devices, and with both MODALIAS and DEVICE we can both match the devices openct supports and know which device file to open and use. Would be great to fix this before gutsy is released. thanks! ** Affects: Ubuntu Importance: Undecided Status: New -- kernel 2.6.22 broke uevent with MODALIAS https://bugs.launchpad.net/bugs/133794 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
