Forum Discussion

Callinder's avatar
Callinder
Up to speed
2 years ago

Superhub5 rebooting

My Hub5 has been rebooting recently but tonight it was because of a "Cable Modem Reboot because of - kernel-panic". It had rebooted at 3:00 am but that was due to a software update. A kernel panic sounds a tad more serious. Anyone had anything similar?

  • Client62's avatar
    Client62
    Alessandro Volta

    Do any of these apply to your system :

    1) RTSP stream / VRChat crashes & reboots Hub 5.
    2) Sonos via Wi-Fi may be a trigger of Hub 5 reboots.

    • Callinder's avatar
      Callinder
      Up to speed

      Unfortunately neither apply in my case. BTW I mostly use Linux and I only stream video from Amazon fire devices on my TVs and the apps I use are Netflix, Amazon Prime and YouTube.

  • The Hub5 rebooted again at 21:46:01 because "Cable Modem Reboot because of - kernel-panic". I was watching YouTube on my TV using an Amazon Fire TV Cube.

    • Megan_L's avatar
      Megan_L
      Forum Team

      Hi Callinder, 

      Thanks for using the Community Forums to get this issue with your broadband looked into, I am sorry if this has been causing some frustration 😥 I would be more than happy to look into this for you! 

      I have taken a look at your services already and can see that your Hub has not been rebooted in nearly two months, this might be what is causing your connection issues as the Hub needs to be rebooted every once in a while in order to reset the data. 

      If you could give your Hub a quick reboot for me and come back to me tomorrow, I will recheck your specs. 

      If my diagnostics are still showing an issue then we will look into it closer ad get an engineer sent out 👨‍🔧

      Thanks,

      Megan_L

      • Callinder's avatar
        Callinder
        Up to speed

        Sorry for the delay in replying but I've been away for a few days. Anyway when I arrived back at home my Internet connection was playing up again. I did a hard reboot which took an age to complete but before doing this I checked the router and on the home page this was shown for the Internet status, Internet(Partial Service (US only)). I have no idea what this means. Now everything appears to be OK but this is happening too often.

  • Adduxi's avatar
    Adduxi
    Very Insightful Person

    Sounds odd, not seen a kernel panic on a Hub before. I do know VM recommend a weekly Hub reboot, again strange.  I usually only reboot my Draytek for firmware updates, so uptime of months is not uncommon.  The only other Hub 5 log mention is “RG reboot” on the Forums. 

    • Tudor's avatar
      Tudor
      Very Insightful Person

      I suspect that VM’s recommendation to reboot the hub is probably down to the inadequate firmware. When run in modem mode the hubs are much less stressed and probably less memory problems, I rarely reboot mine.

      • TableTop's avatar
        TableTop
        Up to speed

        And your conclusion about the hub in modem mode being far less stressed would seem perfectly reasonable and hence needing fewer (if any reboots).

        What I do find odd are two things, firstly Megan’s post just above in which she says that the hub hasn’t been rebooted in two months is in direct conflict with the OP’s contention that the hub rebooted less than a week ago at 3am, and has been rebooting from time to time due to a kernel panic.

        So something isn’t right here, either whatever diagnostics VM ‘s forum team are using, simply aren’t reporting the truth, or what the OP is reporting as a ‘reboot’, isn’t!

        Secondly, of course, the idea that the hub ‘needs to be restarted every once in a while to ‘reset the data(?)’’, is, of course a nonsense, unless, as you speculate, the VM firmware, isn’t really very good.

  • US is upstream, ie data you are sending out to the internet. You should have four (possibly 5 depending on ‘stuff’) upstream channels which carry your data. Partial Service means that one or more of these channels is/are not working properly, probably due to noise (interference) on these channels.

    However, no real need to panic, the underlaying technology is designed to be fairly robust and do what it can to keep you online regardless. 

    If your connection seems to be OK, then, honestly don’t sweat it, otherwise you will drive yourself nuts obsessing over log entries.

    • Callinder's avatar
      Callinder
      Up to speed

      Thanks for the reply which was greatly appreciated. I've noticed a couple of things that are effecting my Internet connection on one device but have no idea why this should, or could, cause a reboot of the router. Basically I set up a 1st Generation Amazon Fire Cube to have an Ethernet connection via a 1Gbit USB adaptor. When I disable the WiFi things just go a tad crazy. I get buffering, constant dropped connections and strange behaviour of the apps I use to watch FreeVee, Prime Video and Netflix. When I use WiFi only everything is OK and when I use the Ethernet with WiFi on in the settings the Ethernet connection looks solid. It's a mystery wrapped in an enigma; or something like that.

      • Adduxi's avatar
        Adduxi
        Very Insightful Person

        So, in effect you are using both Wifi and Ethernet on the Fire Cube?  Should you not be using one or the other?  The Fire TV only needs 10/100 to work for 4K streaming, and in fact that's all the official Amazon ethernet uses.  Just a tad confused about why both...

  • This all started because of router reboots but this problem has suddenly stopped. Anyway I've decided to use WiFi only as the USB adaptor appears to be not working properly. I'm aware that you only need at most a 100 Mbit Ethernet connection but had a spare USB adaptor so though what the hell. Anyway this thread is closed as far as I'm concerned. Apologies for straying off topic.

  • hi @Callinder did you resolve your issue ? I'm getting the same reboots on new installation : either 'kernel panic' or 'unknown'

  • It took a few visits by VM engineers coming out to see what the problem was but in the end it was a signal strength issue from the cable entry point in my home (the white box where the external cable is attached) and my router. The engineer thought it could be the cable issue in my home but noticed that a spitter used to sent the signals to my VM V6 box and the router was really old. So he replaced that with a new model and everything has beed fine since. Otherwise he'd have to look at rewiring my home using better/newer cables. As you have a new installation maybe it's the splitter.