On Sat, 24 Aug 2024 20:50:23 +0200 <to...@tuxteam.de> wrote: > On Sat, Aug 24, 2024 at 06:22:40PM +0200, Hans wrote: > > Am Samstag, 24. August 2024, 18:08:00 CEST schrieb Max Nikulin: > > > On 24/08/2024 05:11, Joe B wrote: > > > > i've been having an issue where my laptop powers off randomly > > > > when not connected to power. This has been happening since > > > > stable and currently i'm on unstable. I would like to use my > > > > laptop without power. > > > > Check temperature! If it shuts down due to overheating, check > > /var/log/syslog or /var/log/kern.log. There should be an entry for > > it. > > While a heat problem might still be possible, it's quite improbable > since the OP said that it only happens when runing on battery. > > Probably not but not definitely not. There will be some difference in power circuitry in use between mains and battery, and it is possible for the mains path circuitry to run cooler than that in the battery path, maybe better sited for airflow. It is even possible for the circulating air to get slightly hotter on battery and trigger a thermal intermittent somewhere else entirely.
If the problem is hardware, cleaning out dust and reseating plugs and sockets are going to be the easiest things to try first. Not trivial, laptops don't come apart easily, but actual component failure is going to be very difficult to diagnose and maybe impossible to fix. I once saw a desktop motherboard where a memory stick had been badly seated and blown a power switch IC. It could be seen to be damaged. It was impossible to obtain this part in Europe. Certainly, heat is a suspect here, and monitoring whatever temperature sensors exist seems like a good first approach. Nearly forgot, reseat the battery first of all, there may be a slightly poor connection there. -- Joe
