Hardware Volume Keys no longer work

[menders]

I recently switched from running Mint 11 LXDE to running Mint 12 with the MATE desktop. My hardware volume keys on my HP Compaq nc8230 used to work under Mint 11 LXDE and now no longer work under Mint 12 Mate Desktop. Not a major problem but an annoyance.

[kaefert]

I have the same problem on my dell inspiron 1520.
When I use the gnome3 that is also included in mint 12 I have no problem with the hardware sound control buttons, but in the MATE desktop the are ignored.

[Burrito]

I've got the same problem at the moment. Also using MATE, also worked when I was on GNOME3. I just wish I had a product key I could use to refer to my computer, like the above two

System: Host burrito-linux-desktop Kernel 3.0.0-12-generic x86_64 (64 bit) Desktop N/A Distro Linux Mint 12 Lisa
Machine: Mobo ASUSTeK model M4A78LT-M version Rev X.0x Bios American Megatrends version 0802 date 08/24/2010
CPU: Dual core AMD Phenom II X2 555 (-MCP-) cache 1024 KB flags (lm nx sse sse2 sse3 sse4a svm)
Clock Speeds: (1) 3200.00 MHz (2) 3200.00 MHz
Graphics: Card: nVidia Device 1245 X.Org 1.10.4 drivers nvidia unloaded: nouveau,vesa,fbdev Resolution 1280x1024@50.0hz
GLX Renderer GeForce GTS 450/PCI/SSE2 GLX Version 4.1.0 NVIDIA 280.13
Audio: Card-1 ATI SBx00 Azalia (Intel HDA) driver HDA Intel Sound: ALSA v: 1.0.24
Card-2 nVidia Device 0bee driver HDA Intel
Network: Card Realtek RTL8111/8168B PCI Express Gigabit Ethernet controller driver r8169
IF: eth0 state: down speed: 10 Mbps duplex: half mac: [REDACTED]
Drives: HDD Total Size: 496.1GB (36.2% used) 1: /dev/sda WDC_WD3200BEVT 320.1GB
2: /dev/sdb SAMSUNG_HM160HI 160.0GB 3: USB /dev/sdc STORAGE_DEVICE 16.0GB
Partition: ID:/ size: 61G used: 11G (18%) fs: ext4 ID:/boot size: 92M used: 29M (34%) fs: ext4
ID:swap-1 size: 2.15GB used: 0.00GB (0%) fs: swap
Sensors: System Temperatures: cpu: 40.0C mobo: 42.0C gpu: 35C
Fan Speeds (in rpm): cpu: 2586 psu: 0 sys-1: 0 fan-2: 0 fan-3: 0
Info: Processes 179 Uptime 12:09 Memory 1276.4/3960.6MB Client Shell inxi 1.7.7

edit: I've found a very temporary 'fix' for it - if you keep Audacious running (make sure it is not using 'software volume control' by unticking the relevant option in Preferences > Audio) and enable the plugin called 'Global Hotkey' and assign shortcut keys through that, it should work. Working for me.

[Burrito]

Any real solutions for this? I've read elsewhere that it may be a missing daemon (one that would be present in GNOME2), but as to a name for this daemon, I have come up empty-handed!

[Burrito]

If, really, no solution can be found, can I report this as a bug somewhere? Should it be under Mate or Linux Mint itself?