Comment 33 for bug 311353

still an issue on my netbook, a Mivvy G310 (rebranded Viooo Corp PT17 or something).
Sound keys do not report a release event for that netbook, which seems to be the problem.
Also this seems to be a kernel problem, not evdev.
kbd addressed it somehow, but should be addressed on a lower level (kernel) to be fixed properly.

there is hope:
For U300 see here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/271706

workaround is to reassign keys or patch evdev (the former is the easiest, else see : http://ubuntuforums.org/showthread.php?t=974723 )

i read somewhere kernel devs are looking for proper handling, hope this will be fixed!