Here's the step by step way to update:
Repair Permissions using the Disk Utility on the drive to be updated;*
Backup your current installation using Carbon Copy Cloner or SuperDuper;
Use the Software Update to download and install 10.9.2 (recommend using the Combo Update);
Re-boot;
Run MultiBeast for Mavericks and just select your audio driver to install and TRIM (if needed);
Re-boot; and
Repair Permissions again.
If you have TRIM enabled, check to see if it was affected by this update.
* You can use the Terminal instead of Disk Utility if you feel comfortable with a UNIX command:
Code:sudo diskutil repairPermissions /
instantlumpia
try to log in using -x flag , if it worked go S/L/E and remove AppleHDA And HDAEnabler then Restart and log in using the normal mode when it works reinstall your Audio using Multibeast and and repair premissions
Seems as if there's a change to AMD framebuffers- if you use an AMD card, you may need to switch to GraphicsEnabler=Yes instead of GraphicsEnabler=No. Check out the following post for 6xxx/7xxx options:
http://www.tonymacx86.com/graphics/...graphics-cards-framebuffer-personalities.html
Anyone having camera issues? I have the Logitech HD Pro Webcam C920, and video doesn't work but microphone does.