Upgrade to Linux Kernel 3.7.6 in Ubuntu
How to upgrade your kernel in Ubuntu to 3.7.6
Here's how you can upgrade your Linux Kernel to version 3.7.6 in Ubuntu.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
cd /tmp
wget http://dl.dropbox.com/u/47950494/upubuntu.com/kernel-3.7.6 -O kernel-3.7.6
chmod +x kernel-3.7.6
sudo sh kernel-3.7.6
sudo reboot
Here's a list of changes in Kernel 3.7.6:
drm/i915: fix FORCEWAKE posting reads
ALSA: hda - Fix non-snoop page handling
ALSA: hda - fix inverted internal mic on Acer AOA150/ZG5
ALSA: hda - Add a fixup for Packard-Bell desktop with ALC880
ALSA: usb-audio: fix invalid length check for RME and other UAC 2 devices
ath9k_hw: fix chain swap setting when setting rx chainmask to 5
DM-RAID: Fix RAID10's check for sufficient redundancy
xfs: fix periodic log flushing
iwlegacy: fix IBSS cleanup
xfs: fix _xfs_buf_find oops on blocks beyond the filesystem end
x86, efi: Fix 32-bit EFI handover protocol entry point
x86, efi: Fix display detection in EFI boot stub
smp: Fix SMP function call empty cpu mask race
NFSv4: Fix NFSv4 trunking discovery
NFSv4: Fix NFSv4 reference counting for trunked sessions
NFS: Fix error reporting in nfs_xdev_mount
Bluetooth: Fix incorrect strncpy() in hidp_setup_hid()
kvm: Fix irqfd resampler list walk
drm/radeon: fix cursor corruption on DCE6 and newer
drm/radeon: fix a rare case of double kfree
drm/radeon: fix error path in kpage allocation
For more, see the original article at the link below.

Install/Upgrade to Linux Kernel 3.7.6 in Ubuntu/Linux Mint | Up Ubuntu