Christopher, I was indeed thinking of F13b. I didn't realize I had F10 installed - looks like I picked the wrong one when I was downgrading.
I just installed F12, and the behaviour is the same. Volume keys work on a fresh boot, and stop working after suspend/resume. Here's the output from dmidecode: furkan@furkan-pc:~$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date F12 09/03/2013 ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1554371 Title: [Regression] Volume keys not working after suspend/resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1554371/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs