Crash Unraid : Serveur kernel: i915 0000:00:02.0: [drm] *ERROR* Unexpected DP dual mode adaptor ID 7f

[spourt38]

Hi everybody,

First, I am french so sorry for my approximate English.
I need your help and advise because my unraid stop working every day after a certain period of time.
I have unraid for a little more than year. It is installed on a new computer and it worked pretty well until lately.
Since September my server stop working almost every day. Unraid become unreachable after a certain period of time (the computer still works but not unraid).
In syslog the error happens almost every minute is : "Serveur kernel: i915 0000:00:02.0: [drm] *ERROR* Unexpected DP dual mode adaptor ID 7f"
I am not sure it is the main cause that make unraid stop working but I think this error is not normal.

I read many subjects in this Forum about this type of error and tried many things without sucess : downgrade version, blacklist I915, change i915.conf, change parameter in bios...
I saw somewhere that it might probalbly be a linux kernel error but what can I do ?
I think I can do without the IGPU but even without the IGPU the error stil happen

Motherboard : Micro-Star International Co., Ltd. MAG B560 TORPEDO (MS-7D15) , Version 2.0
Last bios version
Processor : Intel® Core™ i5-10400T CPU @ 2.00GHz
Memory : 32 GB 
IGPU : UHD 630

This might not be a problem of docker or VM beacause even if I do not start any of them, the error still happen.
PLease find enclosed my syslog and diagnosis.

I have a domotic system in unraid so that a big problem for me if unraid does not work corectly.

Any help and tips would be greatly appreciated.

 

Thanks

Sylvain

syslog.txt serveur-diagnostics-20231030-1143.zip

[JorgeB]

1 hour ago, spourt38 said:

"Serveur kernel: i915 0000:00:02.0: [drm] *ERROR* Unexpected DP dual mode adaptor ID 7f"

These should not be a problem other than the log spam they cause, there are a lot of call traces that look more hardware related to me, I would start by running memtest.

[spourt38]

Hi JorgeB,

Thanks for quick reply and help.

Meanwhile, I tried to downgrade to 6.12.2 almost 2 days ago and I had no crash until now. We will see....

But thanks for your tips and I will run memtest.

If syslog does not tell everything, is there any other tools to know what is going on ?

Sylvain

 

[spourt38]

Just for information, after downgrading to version 6.12.2 unraid works more than 4 days before crashing. But as Jorge suggest the error "ERROR* Unexpected DP dual mode adaptor ID 7f" might not be the cause my servers stops responding. That is very annoyable to have my server stop working. Is there a tools that might help me to find the problem  ? Thnks for your help

[JorgeB]

If the call traces don't occur with v6.12.2 I would suggest trying 6.12.5 once it's out, since it will have a newer kernel.

[sjoerd]

I got some weird behavior regarding to i915 to on a new motherboard - but that was during boot and unraid did not even get to the boot-selection menu: Turned out I used incompatible memory (kingston hyperx) although memtest86 ran over 24h without any errors. I replaced the memory with cheap-ass memory and did not have any error after. My kernel warning were ofc different but it might be an idea - if you got some spare memory laying around - the swap out and see what happens. You could check if the memory you are using is in the compatibility-list for the board you are using.

[tj0]

Hi - I have been getting the same messages in syslog every minute or so since 6.11.* (wasn't the case with 6.10.?). It really seems to be an i915 driver issue.

I was hoping for newer unraid versions including new kernels would fix it but they haven't (I am now happily running 6.12.8).

Following a tip in another thread I have installed the plugin "Intel i915 SR-IOV" (which installs an updated i915 driver), and it worked ! No error messages anymore. The plugin is labeled as "highly experimental" though... hopefully the new driver will end up making it into the linux kernel.

[Ronzz]

I have been encountering the same error since I started using Unraid last year. I'm using an MSI B560i with an i5-10500T, and Unraid version 6.12.10.

As others have mentioned, even when the VM or Docker is not in use, the error still occurs.

If my VM, which uses the iGPU, is running, sometimes the entire Unraid system will crash. The only way to restore it is by doing a hard reboot.

 

I tried installing the Intel i915 SR-IOV plugin as suggested by tj0.

Although this stopped the error messages, it interferes with the i915 drivers, preventing the Intel GVT-g plugin from detecting my iGPU.

 

For those who just want to get rid of the error message, installing the SR-IOV plugin might help. However, this does not ultimately resolve the issue I guess.