I need some help from the community on this one. I recently started playing DOTA2 through Steam on my box and decided to upgrade a few of the components for better gameplay. First I added in another 4GB card to bring my total up to 8GB of RAM and I bought a new GPU as well (Radeon R7 260x). I found that my PSU was likely a little underpowered, so I picked up a new Capstone 550w and got that and the new graphics card installed.
I've since noticed several "problems" or symptoms at the very least. Sometimes I get this weird snow on the screen (think turning on an old CRT TV without the coax cable plugged in) but it's very minimal. Overall you can see the picture just fine, but if you look closely at the screen you can see noise in the image (usually flickering red dots all over the screen). Rebooting seems to fix the "red snow" problem. I've also had some random reboots but lots and lots of freezes which only happen when I'm gaming (sometimes in the middle of games, other times just while the game is loading). I've done a BUNCH of searching around, but I can't find any clear indicators as to what my problem might be.
- Running the Oz Diamond II-b Unity UE (Ubuntu 13.04 64-bit)
- AMD Radeon R7 260x GPU
- AMD Phenom II X6 1045T 6-core CPU
- 2x4GB Kingston HyperX Red RAM
- Asus M6A78L-M LX motherboard
- 120GB Intel SSD
- 500GB hard drive (can't recall the brand)
- Capstone 550w PSU
I did try out the new GPU for about 5 minutes with the old power supply (it booted just fine, but suddenly Unity was broken) so I reinstalled the old GPU until I had the new PSU. After installing all the new components, Unity was still broken and nothing I could do seemed to help, so I ended up just reinstalling the OS over it which fixed my Unity problems. The ONLY time I think I've had any of the freezes or reboots has been when playing, or trying to play, DOTA2.
Also I've installed the "latest drivers" from AMD's website for the GPU, but when I go to the Additional Drivers section of System Settings it doesn't show ANY options (no open source or proprietary drivers). Is it something to worry about?
Any/all advice is much appreciated. Thank you in advance!