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    [AC87U] DNS issues post 384.7 upgrade

    DNSSEC has been enabled for many builds with OpenDNS. This was the first time it caused a problem.
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    [AC87U] DNS issues post 384.7 upgrade

    ... and there we go, soon as I disabled DNSSEC, dns has started to work again. hmm.
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    [AC87U] DNS issues post 384.7 upgrade

    Any known issues with the dns server with the latest 384.7 code? Was previously only 384.5 and no problems. The router itself cannot resolve dns (using OpenDNS... the classic config where not dnsfilter, but hardcoded dns IPs for their service), yet has network connectivity. network clients...
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    100% cpu usage on core 1 of AC88U

    @RMerlin What additional info, debug logs, etc do you need to track down the 50% IO usage due to USB drives, several of us are experiencing
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    100% cpu usage on core 1 of AC88U

    Unplugged router for several minutes (troubleshooting cable modem issues), which so far has cleared up this problem. Weird.
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    100% cpu usage on core 1 of AC88U

    I'm nearly in the same boat as davidedg. RT-AC87U on 384.5. One core is constantly at 100%. Reboots have not helped. Wifi 2.4 and 5 ghz are disabled (use an external AP). top shows nic is consuming about 50%, with no other processes using much of anything.
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    RT-AC87U - Kernel panic

    few more weeks and another different crash. Mar 13 13:43:53 miniupnpd[13399]: remove port mapping 5354 UDP because it has expired <snip> Jul 31 17:00:14 kernel: <1>Unable to handle kernel NULL pointer derefere�U�at virtual address 00000000 Jul 31 17:00:14 kernel: <1>pgd = ca8c8000 Jul 31...
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    RT-AC87U - Kernel panic

    Alrighty, disabled. I dont use it anyways ;) lets see if that makes a difference over the coming weeks...
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    RT-AC87U - Kernel panic

    Few more weeks and a slightly new panic message. This time I clicked the reboot button and noticed the following in the logs. Feb 28 20:09:24 kernel: usbcore: deregistering interface driver usblp Jul 31 17:00:14 kernel: _ Reboot message ...
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    RT-AC87U - Lost Internet - kernel: nvram: consolidating space

    Just a coincidence then that Internet connectivity stopped to function around the same time as the message 'eh? The entry with ohci_hcd is related to USB, which seems to be the root of all my problems lately. already full formatted it multiple times, so I guess I'll try a replacement. If it...
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    RT-AC87U - Lost Internet - kernel: nvram: consolidating space

    On 380.69_2 and lost connectivity to the Internet this morning. No DNS resolution or outbound pings were functional to IPs. Looked in the system log and noticed the following which I've never seen before. Hard to do a hard reboot in order for it to function again. Ideas? Feb 14 22:57:20...
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    RT-AC87U - Kernel panic

    Nope :( latest firmware update 380.69_2 I noticed there was an entry for this model fixing a watchdog timeout, so wonder if related. anyways, just got a crash a few days ago: Jul 31 17:00:12 kernel: _ Reboot message ... _______________________________________________________ Jul 31 17:00:12...
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    RT-AC87U - Kernel panic

    10 more days of uptime before the panic occurred again. anyone familiar with the code base able to chime in on a more definitive root cause? Seems most of the time the offending process is rmmod, which is used for unload the specified kernel modules from the kernel.... so doesnt seem that...
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    RT-AC87U - Kernel panic

    No, I have not (kinda a pain to do on Windows). I did format it fresh though when I started to use this router and AB Solution about a month ago. I'll format it full again. One more chance before RMA'ing it...
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    RT-AC87U - Kernel panic

    reboot 2 Jul 31 17:00:13 kernel: _ Reboot message ... _______________________________________________________ Jul 31 17:00:13 kernel: <1>Unable to handle kernel NULL pointer derefere�U�at virtual address 00000000 Jul 31 17:00:13 kernel: <1>pgd = cf654000 Jul 31 17:00:13 kernel: <1>[00000000]...
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    RT-AC87U - Kernel panic

    Well it didnt take much longer for a few more repeats. This time they have different stacks though. Appears the commonality is the USB port per chance? reboot 1 Jul 31 17:00:13 kernel: _ Reboot message ... _______________________________________________________ Jul 31 17:00:13 kernel...
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    RT-AC87U - Kernel panic

    Dying hardware already? sheesh, the reviews online do have validity after all then about many dying within a short period of time. Brand new sealed box unit too. k, will reset and monitor for repeats...
  18. B

    RT-AC87U - Kernel panic

    upload not attaching. paste instead https://pastebin.com/0y657kBm
  19. B

    RT-AC87U - Kernel panic

    Recently purchased a new AC87U (use to have AC66U) immediately upgrade to 380.68_4 and get everything reconfigured. last week, for the first time installed AB-Solution (v3.9.2), which so far appears to be working great. Reviewing the system messages last night, I noticed the router rebooted...
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    RT-AC87U - WiFi not fully disabled?

    Nice google foo. mystery solved.
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