Support says it was added in 2.5.2 as shown below. If you have a version earlier than that, they have instructions on how to do that.
2. Crash Logs: To capture the crash log on radios running 2.5.2 or later from an SSH session you just need to enter the CLI command “debug crashlog” . If it is earlier you will need root access. You would need to enter “cat /sys/kernel/debug/crashlog” and share the results. On Mon, Jan 11, 2016 at 10:09 AM, Josh Luthman <[email protected]> wrote: > 'debug crashlog' was added in 2.6 I believe > > > Josh Luthman > Office: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > On Mon, Jan 11, 2016 at 11:08 AM, Darin Steffl <[email protected]> > wrote: > >> I saw this exact problem last night in -15 degree weather here and >> emailed Cambium support last night and by 8am this morning had test >> firmware 2.6.1-RC1 which has a fix for the DDR memory timing which is >> causing this problem. It might have helped that I emailed one of their >> engineers and he immediately sent me back the following explanation of what >> is happening. If you see this problem, I would highly recommend emailing >> him your "debug crashlog" results and let him know you're trying this >> firmware and the results of it so they can get in the next release if it >> works for you. It also only affects certain units so this firmware >> shouldn't be for everyone. I would reach out to Sriram before applying any >> of the firmware files in the link below. >> >> >> [email protected] >> >> >> >> >> Hi Darin, >> >> Thanks for reaching out to me. >> >> We believe that there may be a DDR (memory) timing issue with a specific >> set of MAC Addresses that were manufactured. The issue happens only when >> the ambient temperature dips below -5 C. There is nothing wrong with the >> memory but under winter temperatures it appears to be a bit more sensitive. >> We can solve this problem by adjusting the timing of the DDR in software. >> Since you are in Detroit, I suspect that your radios are running into this >> issue. The MAC addresses you have sent me below appear to be in the list of >> impacted devices. In addition, the crash logs you sent me also indicate its >> due to the memory timing issue. It’ll be great if you can eventually send >> me the crashlogs from the other two radios as well. >> >> Please find binaries that are designed to correct the timing error that >> occurs with the DDR memory here: goo.gl/4TpMif. For the Sync radios use >> the firmware labelled “ APPX….” and for non-sync radio use the firmware >> labelled “SMPX…". We have tested this fix internally in cold chambers and >> throughput tests, but has not gone through full regression yet. However, we >> have also tested this fix in over 160 customers radio over the last week >> who are impacted by this issue. >> >> Please install this firmware only on the impacted devices. In the >> meantime, we will complete our internal testing and release 2.6.1 in the >> next couple of weeks that will contain the solution. >> >> If you decide to install it, please keep me up to date on how it is >> going. Like I mentioned earlier, this has been given out to a few other >> customers in cold regions and they have reported positive results as their >> radios have stabilized and the issue is no longer seen. I will keep you up >> to date with how we are progressing along with further internal testing. >> >> Thanks, >> Sriram >> >> >> On Mon, Jan 11, 2016 at 9:40 AM, Josh Baird <[email protected]> wrote: >> >>> What did you hear, and from who? >>> >>> On Mon, Jan 11, 2016 at 10:39 AM, Josh Luthman < >>> [email protected]> wrote: >>> >>>> From what I heard this morning I'm confident. And surprised it can be >>>> fixed in software. >>>> >>>> Josh Luthman >>>> Office: 937-552-2340 >>>> Direct: 937-552-2343 >>>> 1100 Wayne St >>>> Suite 1337 >>>> Troy, OH 45373 >>>> On Jan 11, 2016 10:28 AM, "Vlad Sedov" <[email protected]> wrote: >>>> >>>>> That's promising... >>>>> >>>>> >>>>> Vlad >>>>> >>>>> >>>>> On 1/11/2016 9:25 AM, Mathew Howard wrote: >>>>> >>>>> No... it's not a connector issue. Cambium knows about it and they have >>>>> a fix that they're testing. >>>>> >>>>> On Mon, Jan 11, 2016 at 9:22 AM, Vlad Sedov <[email protected]> wrote: >>>>> >>>>>> I don't buy the connector thing, at least not in all cases. I'm >>>>>> looking at the output of "debug crashlog" on one of the affected radios, >>>>>> and it does look like it's crashing hard. I don't see how it would be a >>>>>> connector issue. Also, we have a few sites with zero issues.. Same >>>>>> firmware >>>>>> and everything. >>>>>> >>>>>> >>>>>> Vlad >>>>>> >>>>>> >>>>>> On 1/11/2016 9:20 AM, Tyson @ Internet Communications Inc (ICI) wrote: >>>>>> >>>>>> So is this a cable connector problem? >>>>>> >>>>>> *Tyson Burris, President* >>>>>> *Internet Communications Inc.* >>>>>> *739 Commerce Dr.* >>>>>> *Franklin, IN 46131* >>>>>> >>>>>> *317-738-0320 <317-738-0320> Daytime #* >>>>>> *317-412-1540 <317-412-1540> Cell/Direct #* >>>>>> *Online: **www.surfici.net* >>>>>> >>>>>> >>>>>> >>>>>> Forgive the brevity, the typos and my fat fingers! >>>>>> >>>>>> On Jan 11, 2016, at 10:12 AM, Josh Baird < <[email protected]> >>>>>> [email protected]> wrote: >>>>>> >>>>>> Yes. >>>>>> >>>>>> >>>>>> http://community.cambiumnetworks.com/t5/ePMP-1000/Cold-Weather-Issues/m-p/36592#U36592 >>>>>> >>>>>> On Mon, Jan 11, 2016 at 10:11 AM, Vlad Sedov < <[email protected]> >>>>>> [email protected]> wrote: >>>>>> >>>>>>> Hey folks, >>>>>>> >>>>>>> Is anyone having trouble with ePMP (GPS variety) in cold weather? We >>>>>>> seem to have a few units that started randomly locking up in the middle >>>>>>> of >>>>>>> the night when temps are below freezing. Rebooting seems to clear >>>>>>> things up >>>>>>> for a day or so. >>>>>>> >>>>>>> >>>>>>> peace >>>>>>> >>>>>>> Vlad >>>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>> >> >> >> -- >> Darin Steffl >> Minnesota WiFi >> www.mnwifi.com >> 507-634-WiFi >> <http://www.facebook.com/minnesotawifi> Like us on Facebook >> <http://www.facebook.com/minnesotawifi> >> > > -- Darin Steffl Minnesota WiFi www.mnwifi.com 507-634-WiFi <http://www.facebook.com/minnesotawifi> Like us on Facebook <http://www.facebook.com/minnesotawifi>
