The new sys-apps/pcsc-lite-1.6.5 ebuild introduces a faulty udev rule for hotplugging. This udev rule breaks the audio system's permissions (could do more things too, I have not tested it thoroughly), changing the group of all audio devices to pcscd group, thus making the sound system totally unusable for users outside the scope of root and pcscd group. The faulty rule is: ACTION=="add", GROUP=="pcscd", RUN+="/bin/env IN_HOTPLUG=1 /etc/init.d/pcscd --quiet start" Here GROUP cannot be used as a matching rule and actually is used as a value assign rule.... See 'man 7 udev' Please fix! Reproducible: Always Steps to Reproduce:
*** Bug 347740 has been marked as a duplicate of this bug. ***
It also does the same thing to /dev/tty*
Fixed with 1.6.5-r1 version bump, sorry for the mess-up. I'll see to get it improved in udev though, as doing a silent fallback from "compare" to "assign" is silly.