Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: jkn Newsgroups: comp.os.linux.misc,uk.d-i-y Subject: Re: Anyone else seen this. Date: Fri, 3 Jul 2026 22:32:13 +0100 Lines: 46 Message-ID: References: <1128k1p$3fgrb$1@dont-email.me> <112959e$3lb6q$2@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: individual.net KjP9LAgN6m5Ej0jRt/Q/tA9ps361O9KFLqhI4IJ8DC98WoN68n Cancel-Lock: sha1:HTU8iKiBHYOnLTz0FBKLXS6FPjg= sha256:OeMaU4FOZ41WPIR/Dcl2fA/r49HLKWGnMMtJlwQQFrM= User-Agent: Mozilla Thunderbird Content-Language: en-US In-Reply-To: <112959e$3lb6q$2@dont-email.me> Xref: csiph.com comp.os.linux.misc:88624 uk.d-i-y:1241228 On 03/07/2026 21:15, John Rumm wrote: > On 03/07/2026 16:21, The Natural Philosopher wrote: > >> Recently my router (Draytek 2726) has been spontaneously rebooting. >> >> Examination of the logs show a kernel panic caused by 'attempt to >> execute an illegal instruction'. >> >> My assumption, possibly erroneous, is that the actual firmware code is >> corrupted >> The router is rated only to +45°C but that is the recommended limit >> for flash memory, and the room temperature has been up towards 40°C. >> which doesn't leave a great deal of margin for router internal heat >> production. >> My query is whether anyone else has seen issues with flash memory in >> the recent hear wave. >> >> Surely phones get hotter than this? >> >> Genuinely interested in other's experiences. > > Not noticed any particular pattern of reboots with the current one > (2927), the previous 2865 might have restarted more frequently - but > even then only 2 or 3 times a year. > > (I think if they detect a sequence of boot time fails, they will revert > to the previous version of the firmware just in case it was a firmware > update that caused the problem) > > The FTTP sometimes drops out for 10 mins at midnight once every few > weeks, but I expect that is a ISP issue or something on the PON. > > I have a temperature sensor plugged into one of the USB ports on the > router, and the graph is showing a daily cycle between 40.2 and 40.6 deg > C at the moment. (it is in a 12U 19" comms cab - but the door is open) > Hi John how does that temperature sensor bit work please? There is a 'USB Application | Temperature Sensor' menu entry on my Draytek, but I don't know what it needs to work... Thanks J^n