Topic Title: No signal from dvi or hdmi after installing 4 different driver versions
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Created On: 03/16/2014 03:22 PM
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 03/16/2014 03:22 PM
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simsy
Peon

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Joined: 03/16/2014

Just did a fresh Win7 install on my new Asus A88X-Plus mobo (1202 bios) with A10-7850K APU. After I installed 13.301 drivers my DVI and HDMI suddenly stopped working (no signal on 3 different displays). VGA still works fine on normal boot and both DVI / HDMI do work but only while in safe mode.

Reinstalled windows tried the 14.2 drivers... same thing.
Reinstalled windows tried the 13.12 drivers... same thing.
Reinstalled windows tried the 13.30 RC3 drivers... same thing.

Everything works fine until I install any AMD drivers.

Bad drivers? Bad mobo? Bad APU? Any ideas?

 03/16/2014 03:48 PM
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Eydee
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Or bad monitor. Trying another one would be wise if you can.



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CPU: AMD Phenom II X4 810 @ 3120MHz | RAM: Kingmax 2x2GB DDR2 800 @ 833MHz| MoBo: MSI K9A2 CF v1.0 (BIOS: 1.D)| GPU: Asus HD 6850 1024MB (DirectCu) @ 835/1135MHz | Display: L24FHD | PSU: PC Power & Cooling Silencer 750 Quad | OS: MS Windows 3.11 Pro x64

 03/16/2014 04:33 PM
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simsy
Peon

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I've tried 3 different displays, 1 monitor and 2 TVs

DVI / HDMI get as far as the windows loading screen and then nothing, just a black screen.

If I connect a VGA cable I can see that Windows is loaded fine, no errors, I uninstall the AMD display driver and both DVI/HDMI start working again.

 

 03/16/2014 05:22 PM
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Eydee
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If you have more devices you can play around. Set up a VGA monitor as primary and a DVI/HDMI monitor as secondary. Set device manager to open right when you log in (make shortcut to devmgmt.msc in start menu/startup) and check if the second monitor is visible, if it gets disabled, disappears etc.

You may as well open CCC and try to resurrect it. Click the detect button etc. I wonder if the monitors are not even seen by the card, or it just doesn't give them signal.

And another idea:

I remember people having similar issues when the R9/R7 series came out. Their solution was cross flashing their cards. I'll be honest, I have no idea what controls APUs. Motherboard BIOS? There's another BIOS in the APU? Whichever is the case, it would be a good idea to check if that firmware is upgradable and if there is an update for it.



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CPU: AMD Phenom II X4 810 @ 3120MHz | RAM: Kingmax 2x2GB DDR2 800 @ 833MHz| MoBo: MSI K9A2 CF v1.0 (BIOS: 1.D)| GPU: Asus HD 6850 1024MB (DirectCu) @ 835/1135MHz | Display: L24FHD | PSU: PC Power & Cooling Silencer 750 Quad | OS: MS Windows 3.11 Pro x64

 03/16/2014 06:37 PM
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simsy
Peon

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Just tried with monitor (vga) and a TV (dvi and hdmi).

Both display and work perfectly fine before installing AMD display driver.

After installing 13.301 driver, both work perfectly fine while in bios and up until the windows loading screen when the TV (dvi or hdmi) loses signal while the monitor (vga) keeps working. No indication in windows that second display was even detected, only the monitor appears in CCC.

Again both work in safe mode with driver installed. Both get indentified as display 1.



Edited: 03/16/2014 at 06:51 PM by simsy
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