PC Bricks when disabling B580

[Puffalo]

I have 2 gpus in my system, i use a program called "Lossless Scaling" to let a secondary graphics card run frame generation while freeing performance up for my main performer (The B580)

There are some games in my library that just dont enjoy the B580 and that is fine, these are the cases i would prefer to switch to the GTX 1080


The issue is that when i disable the B580 in device manager, i can no longer use my PC at all
My mouse dissapears, my screen just shows an empty desktop, when i press ALT TAB it shows "Display 1" and "Add display" (that is ordinary, this is just to show the PC doesn't freeze).

When i restart the PC, i cannot boot past the windows logo, it will freeze every time while booting, and the only way that i am able to actually get into windows to re-enable the driver, is to unplug the power connectors to my secondary GPU.

If i unplug the B580 by its connector, my PC boots just fine into the GTX 1080
When i swapped the PCI-e Slots of the cards, it made no difference.

The usual reaction to disabling a gpu, is the immediate swap over to- the other gpu.

[JeanetteC_Intel]

Hello Puffalo,

Thank you for posting in Intel Communities.

Since you mentioned that you can still boot your PC by unplugging the B580, please follow the steps below while using the GTX 1080:

1) Download the latest graphics driver 32.0.101.6881 (WHQL Certified) for Intel® Arc™ B-Series Graphics, and save it.

2) Proceed with uninstalling the Intel Graphics Driver from your system using the Display Driver Uninstaller (DDU) software, follow these instructions: 

1) Download the latest version of the software.

• If you download the Installer, run it, it will create a shortcut on the desktop. 
• If you download the Portable/ self-extracting version, look for the executable and extract it. Remember the path. 

2) Plug the B580 back in.

3) Reboot into Windows* safe mode. (Refer to Start your PC in safe mode in Windows.)

4) Look for the shortcut on the desktop (step 1.1) or the extract path chosen (step 1.2.1) and run the DDU executable.

5) Click Close in the Options window.

6) Select device type to GPU and select device to INTEL.

7) Click Clean and restart or Clean and Shutdown depending on your needs.

😎 Wait for the software to finish the process and which will automatically reboot Windows to the typical mode or shutdown the system.

Additionally, please verify the supported hardware for Intel® Arc™ B-Series Graphics and consult your motherboard manufacturer's support team to confirm whether it supports Resizable (Re-Size) BAR and if it is enabled in the BIOS setup.

I look forward to your response.

Best regards

JeanetteC.

Intel Customer Support Technician

[Puffalo]

Hello, I have done all the steps and have reinstalled with the newest driver

I have figured out why previously i would have to unplug one graphics card or the other.

Turns out that when the B580 is disabled, it still outputs an HDMI video signal.
My monitor automatically switches output when it sees a signal loss, well what happened is that when i would disable the B580, the screen would turn black, then come back on and display a blank desktop with all my icons on it, but it never actually switched over the output, since the B580 was somehow still outputting a signal.


TLDR: B580 outputs display even while disabled, It even still shows up in Windows Display options while disabled, when it shouldn't.

It seems the problem has been solved, Could you add this as a bug report.

Below is an example of how it should act (GTX 1080 disabled), The difference is that it doesn't show multiple displays now (1 monitor)
This is how it should behave.

If this can be fixed in a driver update, then i hope this helped 🙂

[RandyT_Intel]

Hello Puffalo,

As the matter has been addressed, we will proceed with closing this thread. Please note that it will no longer be monitored. However, rest assured that the resolution has been forwarded internally for review and consideration in future driver optimization efforts. Your feedback is invaluable in helping us improve our services.

Thank you for sharing the fix with us and for your continued support. Should you encounter any further issues or have additional questions, please do not hesitate to reach out to us through our support channels or submit a new thread.

Best regards

Randy T.

Intel Customer Support Technician