LHC@home

Today, I installed BOINC 8.0.2 and Virtual Box 7.1.14 (incl. extension pack) on a new notebook with Windows 11.
However, when trying to download either CMS or Theory (the two subprojects for which plenty of tasks are presently available), the BOINC event log keeps telling me "no task available for CMS simulation" or "no tasks available for Theory simulation".
I double-checked the BOINC settings, plus that virtualization (AMD-V) is on "enabled" in the BIOS.

Any idea what is going wrong ?

Virtualbox (7.1.4) installiert, Prozessor besitzt keine hardwareseitige Unterstützung für Virtualisierung.
This is the reason. Don‘t know why the Hardware have not accept AMD-V.

Virtualbox (7.1.4) installiert, Prozessor besitzt keine hardwareseitige Unterstützung für Virtualisierung.
This is the reason. Don‘t know why the Hardware have not accept AMD-V.

oh, thanks for the hint, I missed to look up this part of my hosts list. This is really strange, and honestly I hate to believe that it's the CPU which is defective (I never had that before, but of course, you never know).
what comes into my mind now is that when the installation of Virtual Box 7.1.4 got finished, an insert popped up saying something like that another piece of software must be installed whithout which the Virtual Box does not work. Unfortunately, at that moment I was distracted by a lengthy incoming phonecall, and afterwards this insert was gone. So I have no idea what kind of additional software VB 7.1.4 needs, in contrast to earlier versions where this was not the case.
So my suspicion is that this missing software may be the problem. I searched the Oracle website, but could not find any hint.

So the question now is: did anyone of you ever install VB 7.1.4 and hence knows what kind of additional software is needed?

Alternatively, I could remove VB 7.1.4 and install an earlier version which is running on any of my other hosts whithout any additional software - however, I think to remember that I had read before here in the forum that downgrading to an older version may cause problems.

Any other ideas ?

Any other ideas ?

Did you follow Yeti's checklist? https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=4161&postid=29359
Special attention for disabling Windows Hyper-V and the remark about <p_vm_extensions_disabled>1</p_vm_extensions_disabled> in client_state.xml.

I now went over Yeti's checklist, with particular attention to <p_vm_extensions_disabled>1</p_vm_extensions_disabled> in client_state.xml. I found this entry set to >0< so this should be okay.
To make sure that no hypervisor is activated (although all infos I found said that normally a hypervisor is NOT activated to begin with) I set the following in the powershell: bcdedit /set hypervisorlaunchtype off

Still no positive effect for my problem.

So I planned to disable and then enable AMD-V in the BIOS. After I had disabled it, just out of curiosity I started BOINC and - what surprise - a CMS task (including the initial vdi) got downloaded and started.
However, after 22 seconds it crashed:

https://lhcathome.cern.ch/lhcathome/result.php?resultid=418790546

saying, of course: VBoxManage.exe: error: Not in a hypervisor partition (HVP=0) (VERR_NEM_NOT_AVAILABLE).
VBoxManage.exe: error: AMD-V is disabled in the BIOS (or by the host OS) (VERR_SVM_DISABLED)

What it also said though: 2025-01-14 11:47:00 (12060): Required extension pack not installed, remote desktop not enabled
if this refers to the VB extension pack - I definitely installed it yesterday. However, the task should run even without the extension pack, anyway.

So, next I enabled AMD-V in the BIOS and restarted BOINC - same "old" problem: "no tasks available for CMS simulation" :-(

In short: with AMD-V disabled, tasks download right away, but are bound to fail.
with AMD-V enabled, no tasks being downloaded - really weird, right? No idea what I can still do to get this system crunch VB tasks :-(

Edit:
when AMD-V was disabled in the BIOS, the host description in my hosts list said that virtualization is available and enabled.
Once I switched back to "AMD-V enabled" in the BIOS, the host description again says "no hardware support for virtualization" -

a big conondrum

Please recheck whether all features of Windows Hyper-V are diabled:

If not: - disable and reboot.

everything under "Hyper-V" is disabled (unchecked).

I am still thinking about this insert which showed up right after the VB installation got finished saying that additional software must be installed in order to make the VB function properly. Too bad, that I missed that.

As mentioned in my original posting, maybe it would make sense to uninstall VB 7.1.14 and either re-install it - hoping that at the end of installation this insert will show up again, or, if not, to install an older version.

N.B. what I did not forget to begin with was to switch off the "memory integrity" within the "core isolation" (without doing that the project would not have funcitoned under Win10).
So is there maybe something else now under Win11 which needs to be changed / switched off / switched on ?

Check this point also. This is from: https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=4161&postid=47380#47380

Hello all, after struggling with "CPU does not have hardware virtualization support"
I found the newest issue is with Windows 11 setting. Windows Security/Device Security/Core Isolation/Memory integrity =turned on virtualization not detected, needs to be turned off
Yeti you may want to add this to your list

---

Check this point also. This is from: https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=4161&postid=47380#47380

Hello all, after struggling with "CPU does not have hardware virtualization support"
I found the newest issue is with Windows 11 setting. Windows Security/Device Security/Core Isolation/Memory integrity =turned on virtualization not detected, needs to be turned off
Yeti you may want to add this to your list

well, as seen in my case: it's turned off, but still there is a problem :-(

It does not actually turn off in 24H2, if you have 24H2 then you can follow guide.

https://www.reddit.com/r/Amd/comments/1fums7b/psa_disabling_memory_integrity_in_windows_11_24h2/

A nice colleague brought to my attention to this posting from Toby Broom, dtd. Nov. 26, 2024, referring to an obvious bug in Windows 11 regarding switching off the memory integrity in the template "core isolation":
https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=6254&postid=51177#51177

So I now checked the registry, and indeed the value was "1" instead of "0", although I had switched it off all time long in the template. Okay, so I got this straightened out by changing the registry value.
However, my AMD Ryzen 7 7735HS still does not accept virtualization :-(

So I re-read Yeti's checklist in detail, nothing there which I hadn't done before anyway.

Maybe someone has any information on further Windows 11 bugs which prevent virtualization from running?

Toby Broom posted a link to reddit.

@Erich56
Did you read through the comments of that thread?
You may try if this solves your issue:
https://www.reddit.com/r/Amd/comments/1fums7b/comment/lycwbc2/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button
In short (not tested):
Modify registry Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\WindowsHello\Enable to 0.

In short (not tested):
Modify registry Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\WindowsHello\Enable to 0.

exactly this solved my problem :-)
Many thanks for your big help!

I wonder which registry key will be required after the next Windows update.
:-(

Nothing to do. It's been months without wus.

Cpu virtualization? Enabled
Memory integrity? Disabled
Hyper-V? Not installed
Registry key "Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\WindowsHello\Enable"? Does not exist
App_config.xml? Not present
Reset the project? Done
Applications selected? All

I run correctly some virtual machines (win and linux) on my VirtualBox 7.1.4, despite lhc@home continues to say that my "cpu does not support virtualization"

This are Infos from AMD-Page.
Do you have newest BIOS update and Chipset driver installed?

CPU-Sockel
AM4
Supporting Chipsets
X570 , X470 , X370 , B550 , B450 , B350 , A520
CPU Boost Technology
Precision Boost 2
Anweisungssatz
x86-64
Unterstützte Erweiterungen
AES , AMD-V , AVX , AVX2 , FMA3 , MMX-plus , SHA , SSE , SSE2 , SSE3 , SSE4.1 , SSE4.2 , SSE4A , SSSE3 , x86-64

Edit: AMD-V is SVM in Bios. Must be enabled and BIOS must be saved

Nothing to do. It's been months without wus.

At least CMS has enough tasks for a few weeks.

Registry key "Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\WindowsHello\Enable"? Does not exist

If the key does not exist, create it and set it's value to "0"?

If the key does not exist, create it and set it's value to "0"?

??

Nothing to do. It's been months without wus.

At least CMS has enough tasks for a few weeks.

Registry key "Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\WindowsHello\Enable"? Does not exist

If the key does not exist, create it and set it's value to "0"?

In addition ensure "Run native if available? (Not recommended for Windows)" at the prefs page is not checked for the venue your Windows computers are attached to.

Do you have newest BIOS update and Chipset driver installed?

Yes.