Missing MSR_EBL_CR_POWERON(0x2A) caused GPU-Z BSOD => Fixed in SVN

[Vic Lee]

This BSOD is easy to reproduce by just download and run GPU-Z. However it's also very easy to fix by adding MSR_EBL_CR_POWERON(0x2A) in cpumQueryGuestMsrInt() function. Please consider fixing it.

Thanks.

[blueytoo]

VB 4.3.6 on MacOS 10.6.8 Windows 7 Pro Guest.

I can confirm that running GPU-Z will crash VB and cause Windows to restart.

(There is also a problem with VRAM detection, which is why I wanted to run GPU-Z to start with. Will post on that separately when I figure where to put it.)

[Frank Mehnert]

Many MSR fixes after 4.3.6, therefore could you check if this test build fixes the problem for you?

[blueytoo]

Do you have extension pack too? (tried making up a url but it didn't work)

[blueytoo]

Current error message running GPU-Z could be due to lack of extensions/guest additions: "Could not start driver: The service cannot be started, either because it is disabled or because it has no enabled devices associated with it."

[Frank Mehnert]

Just use the 4.3.6 Guest Additions. Where did you see this message?

[blueytoo]

The message was from GPU-Z trying to install prior to updating the guest additions.

Installed guest additions (didn't realise they aren't part of extpack). GPU-Z installs and runs. No graphics card reported. Is that what it's meant to be?? (see screenshot)

[Frank Mehnert]

Likely. The graphics adapter ("VirtualBox Graphics Adapter for Windows Vista and 7") is apparently successfully installed in your guest. The "unavailable" strings in your screenshot are probably the result of CPU-Z not knowing the VBox graphics adapter. To me it looks like your issue with the MSR is fixed with the 4.3.7 test build.

[blueytoo]

OK. Thanks.

[Frank Mehnert]

Could you test ​VBox 4.3.8 RC1?

[blueytoo]

Seems to work fine as far as this bug goes, same as test build. Will run GPU-Z without crash. GPU-Z can't detect video adapter as before.

[blueytoo]

I know it probably belongs somewhere else, but GPU-Z did detect VirtualBox Graphics Adapter for someone using VBox 3.x. See ​http://www.geeks3d.com/20090621/quick-test-virtualbox-3-0-and-opengl-2-0/.

[Frank Mehnert]

The MSR issue is fixed in 4.3.8. GPU-Z not being able to detect the display adapter is most likely not a bug because VirtualBox emulates its own graphics card with some 3D extensions. If you don't agree, please open a separate ticket.