A10 7850K Kaveri Radeon APU
AMD Catalyst Driver Version, and Driver History
14.4. (Previously used 13.1 to 14.3.)
Windows 7 Ultimate 64-bit. Up to date
New built PC in Februrary, had no HDMI video and audio signal. Despite installing catalyst, the device manager primariy notified display adapters as 'VGA adapter' and in playback devices as a "Not Plugged In" status and I could not set changes or set defaults (options are grayed out). Note: DVI works either way.
After updating to 14.2-14.3 Catalyst and setting UEFI (Bios) on onboard devices realtek to disabled, I finally got full HDMI video and audio but it disabled other sound options direct from PC, such as headphone or speakers.
After Installing 14.4 Catalyst Beta, nothing changed and HDMI was fine although I wanted audio from PC. The UFEI also got an update that I flashed afterward which caused it to reset all memory and onboard device changes to its defaults. As expected, upon a restart I would lose HDMI video signal and hdmi audio. I restarted to go back into bios and re-adjust to my previous settings under the new bios version. However, I still had lost HDMI video and audio. After several reinstalls of drivers I found that disabling catalyst entirely (removing all related files to the AMD's catalyst using a utility software) would give me HDMI video but no audio (not plugged in status) as VGA adapter. Using catalyst would cause the video signal to be lost, even if I used any older version.
Motherboard or System Make & Model
Display Device(s) and Connection(s) Used
Sony Bravia HDTV 32"
Benq RL2455HM 24"
Note: Only using one display at a time.
Applications and Games
None but I would like Chivalry to perform better
Memory increased to 2133 and reduced timings, nothing extreme.
Motherboard BIOS Version
System Memory Type & Amount
G.Skill Ripjaws Z Series 8GB (2x4GB) 240-Pin DDR3 SDRAM DDR3 2400 (PC319200) Desktop Memory Model F3-2400C10D-8GZH
1XCorsair 140mm fan.
HDMI works until post boot after windows logo loads.
I've done everything from full system recoveries, fresh installs, singled out different drivers, tested different cables, monitors, checked software and hardware.
I find there are many other forums that post with similar set ups with similar issues, overall I think there is a conflict between kaveri, catalyst and the asus motherboard but I have no idea what to do. It's not like the computer isn't operational but I would really like to have HDMI.
It's also a shame that I can't really play 1080p with kaveri either without low frames lol (any video card upgrade and oc timing suggestions would be great)
Other threads with similar issues: http://forums.amd.com/game/messageview.cfm?catid=483&threadid=170996&highlight_key=y&keyword1=7850k%20hdmi