Sten3danny

Hi all, I feel really stupid but I cannot seem to figure this one out. I have Plex installed on Unraid with a Hauppauge some or other USB DVB-C tuner. I set it up years ago and it has been working great. However, some of the channel frequencies have changed in my region and I cannot find how to update them, so some channels no longer work. There is a rescan option in Plex itself, but that doesn't seem to do anything and I cannot find any options inside Unraid. I seem to remember manually editing some ini file or something back then, but I am not sure. Also, I cannot find any instructions online. Who can point me in the right direction? Much appreciated! Thx, Danny

Finally got around to testing this, so I spun up my VM again and guess what, nothing happened! 😁 I actually shut down and restarted the VM a few times and everything has been stable so far. I am of course not complaining.. Guess I will just enjoy this unexpected succes for now and wait until the next 'incident' ;)

I will do that, once the server has a quiet moment. Thx again Jorge!

No, it is disabled. Could the graphics card being the primary adapter (according to Unraid) be causing issues? I don't know how to change that, other than maybe by physically swapping my two graphics cards, which I might try if it could potentially help..

It is Jabberwocky. Indeed you are right, that could be, but I cannot understand why. I only want to pass through the graphics card and sound card (10:00.0 and 10:00.1), which I have selected in the VM config.

Thx Jorge, that would make sense because the drives that dropped away are exactly the drives connected to that controller: I need to double check, but I am pretty sure this is an onboard controller on the motherboard. The issue basically occured the minute I started up that VM, I will check later if I can reproduce the issue. Could it be related to the fact that the graphics card I am passing through is the primary card (according to Unraid), and would uploading a vbios file help? Honeslty I've never really fully understood how this passthrough works and what I should pay attention to. It has mostly been a trial and error process, which has worked so far, but now it seems I'm finally at the point where I need to put some serious effort into it :-)

Hi Jorge, somehow I missed this reply. Is IOMMU not needed for hardware passthrough?

Okay, so my optimism was a bit premature ;-) Today I decided to spin up my VM (the one called Jabberwocky that has a GPU passed through) and all hell broke loose. First off, one of the SSD's (sdi) from my ZFS pool named 'pppool' dropped offline. I have attached the info from the pool status as it was displayed. Besides that, three hard drives from my array dropped away and were listed under Unassigned devices. In panic, I shut down the VM and then the server completely and after booting back up, luckily everything was back to normal again. Note that I no longer have that VFIO bind error that I was getting before, but apparently still something is not right with my configuration. I now have it configured as follows: Note that these two devices are the only devices being passed through to the VM and are also the only two devices in the device list with the 10:00 device identifier (or however that should be called). One other thing that might be important is that under the VM config the following is stated: GPU is primary adapter, vbios may be required. I am not sure how to check which video adapter (also have an ARC A310 in the system) is the primary one. The VM itself did spin up without any issues. I am also attaching the diagnostics file. Really hoping someone can help me out and point me in the right direction to find out what is wrong with my system. Thanks for any thoughts! pppool status info.txt olifant-diagnostics-20250713-1502.zip

After a few more weeks of fiddling I think I can draw some kind of conclusion. I am now pretty sure that my issues were somehow related to that VFIO bind error. Over the past few weeks I have made hardware changes a few times (such as adding an nvme drive) and every time that VFIO bind error would pop up and one of my SATA SSD's would drop offline. After rebooting it would reappear, but as an unassigned drive, meaning the ZFS pool to which it belonged would be in error state. Then, after fixing the VFIO bind error, removing the ZFS pool, recreating the ZFS pool and resilvering, all would be okay again. As long as I don't make any hardware changes and the VFIO bind error does not exist, everyting seems hunky-dory. Not sure if this is an Unraid issue, or something particular to my system, but just thought I would share my findings here.

Hi JorgeB, thanks for your response. I do not have PCIe ACS override enabled, but as I mentioned I did see a VFIO bind error popping up every time on startup. I have now checked the checkboxes next to the graphics card and sound card that I am passing through and the error is no longer popping up. But tbh, I don't really understand how this works. I always thought that if the devices that are to be passed through are together in one IOMMU group, it was not needed to bind them, but apparantly it is (?) In any case, probably its unrelated as you say, but I will not spin up the VM for now to see what happens..

Hi JorgeB, it's Jabberwocky.

Okay, an update: So I replaced the drive that was dropping offline with a shiny new one a few days ago. All was well for a few days until today the new drive dropped offline. (Note that previously I had already swapped position (sata and power cable) of the old 'faulty' drive with another drive and still that one drive was dropping offline. Now the new drive dropped offline at that same position. So this is still a bit mysterious to me, but never mind that for now) For now it seems pretty safe to conclude that the issue was/is not with the drive itself. I didn't really know what to do next, until I realized that today for the first time since replacing the drive, I had spun up one of my VM's that has a graphics card (and corresponding sound card) passed through. Could this be somehow related? The VM in itself was working fine. For now I will not spin up this particular VM, to confirm if the drive will still drop offline without the VM running. I have attached new diagnostics from just after the drive dropping offline, really hope one of you experts can retrieve some useful information from it. Many thanks in advance! PS: two facts that might be of interest: 1) Unraid was previously throwing up a VFIO bind error that I did not understand. I have now checked the check boxes next to the graphics card and sound card that are being passed through to the VM and restarted Unraid. They are together in one IOMMU group. 2) This morning I updated to Unraid 7.1.2. Might not have been the smartest move given I am in a troubleshooting process, but it's done. olifant-diagnostics-20250517-1442.zip

By the way, how can I change the title of this thread? I cannot seem to find it..

I replaced the ssd with a new one this morning and resilvered the pool. I will do a full SMART check of the 'old' device and place it in another system for testing. Will post what happens.. In the meantime, is there anyone else out there having similar issues?

Hi JorgeB, thank you for your response. As I mentioned in my post, I swapped the drive's position with another drive in my system (so power and sata cable), and still this one same drive was dropping offline (and the other was not), which lead me to believe the issue is with the drive itself somehow. Maybe it is a power/connection issue like you say, but then still why is it affecting only this one particular ssd, irrespective of where I put it in my system? Is there any other information to be extracted from the diagnostics file? I will also have another close look myself, but I am no expert, so any other suggestions will be appreciated! Thx again!