Adam Talbot
2021-Mar-05 21:24 UTC
[Nut-upsuser] [EXTERNAL] Tripp Lite "Remote Shutdown" when USB cable is attached
I rebooted, and this struck again. I can add just a little more info. The "REMOTE SHUTDOWN" happens within 2 second of the kernel loading. Before init starts. I tried a couple of times to plug in the UPS (USB), all after the server was up and running. Each time the UPS did a remote shutdown. Any other ideas? On Fri, Feb 5, 2021 at 11:33 AM Fairfax, Charles A. <FairfaxC at missouri.edu> wrote:> David, > To answer your question: In addition to the SU3000XLCD which shut down > when I connected my Raspbian Pi via USB I have a couple SU1000XLa, a couple > SU1000RTXL2Ua, and one SU3000RTXLCD3U connected by USB Raspberry Pi. No > network or EPO connections. I've only experienced the shutdown issue once > on that one UPS. > > I also have several SU1000RT2U one SU2200RT2U which I monitor with NUT but > they predate USB so are connected by RS232. At nearly 20 years old they > probably don't enter into this discussion but they have been working great > with NUT. > > Charles Fairfax > > -----Original Message----- > From: David Zomaya <David_Zomaya at tripplite.com> > Sent: Wednesday, February 3, 2021 10:14 AM > To: Adam Talbot <ajtalbot1 at gmail.com>; Fairfax, Charles A. < > FairfaxC at missouri.edu> > Cc: nut-upsuser at lists.alioth.debian.org > Subject: Re: [Nut-upsuser] [EXTERNAL] Tripp Lite "Remote Shutdown" when > USB cable is attached > > WARNING: This message has originated from an External Source. This may be > a phishing expedition that can result in unauthorized access to our IT > System. Please use proper judgment and caution when opening attachments, > clicking links, or responding to this email. > > >> I have a few other models of TrippLite UPSs in service but the > SU3000XLCD is the only one that's shut down like this for me. > Do you know any of the other models? Would be an interesting data point > > >> I did contact TrippLite at the time and they asked me to call with the > computer and UPS available. > I was on the tech support team back then... maybe we've come full circle. > I plan to dig into this sometime this week when I am in the office. > > Thank you, > David Zomaya > Tripp Lite > > > ________________________________ > This message is for the addressee's use only. It may contain confidential > information. If you receive this message in error, please delete it and > notify the sender. Tripp Lite disclaims all warranties and liabilities, and > assumes no responsibility for viruses which may infect an email sent to you > from Tripp Lite and which damage your electronic systems or information. It > is your responsibility to maintain virus detection systems to prevent > damage to your electronic systems and information. > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://alioth-lists.debian.net/pipermail/nut-upsuser/attachments/20210305/228b3984/attachment.htm>
David Zomaya
2021-Mar-05 23:42 UTC
[Nut-upsuser] [EXTERNAL] Tripp Lite "Remote Shutdown" when USB cable is attached
>> Any other ideas?I have not figured this out yet. It makes it more odd that my tests don't reproduce the issue (I just ran a few quick tests again) and we're not hearing it from more users (although it seems like at least one more on serverfault: https://serverfault.com/questions/858267/network-ups-tools-nut-causing-ups-to-reboot. I'm probably missing something so I'm going to restate what I think we know and ask some questions. REMOTE SHUTDOWN means the UPS got a signal either via USB, serial, network card, etc to shut down. In these cases we've already confirmed it is USB. * From your tests, can we completely rule out NUT as being directly involved? i.e. if NUT is not installed or does not start up on boot, does the REMOTE SHUTDOWN still occur? (seems likely based on timing?) * Adam: your kernel version is 5.4.78-2 based on this thread * Charles: What is your kernel version? (if you can provide uname -a that works) * Kernel version I tested was 5.4.0-65 * The issue only occurs on reconnection of the USB cable or restart of the operating system (i.e. NOT disconnection or shutdown) Thank you, David Zomaya Tripp Lite ________________________________ This message is for the addressee's use only. It may contain confidential information. If you receive this message in error, please delete it and notify the sender. Tripp Lite disclaims all warranties and liabilities, and assumes no responsibility for viruses which may infect an email sent to you from Tripp Lite and which damage your electronic systems or information. It is your responsibility to maintain virus detection systems to prevent damage to your electronic systems and information.