Hi, I probably mentioned a while back at a meeting that my laptop had a problem where sometimes (seemingly unpredictably) one CPU core would be locked at 100% by Xorg after booting up.
Eventually, I realised that changing my display manager from LightDM to SDDM fixed the issue, but I never found out what the cause was. I reported it but no one seems particularly interested in fixing it. I've never even attempted to debug something like this, so I was wondering if any of you could help/offer suggestions for where to start. Problem is, I see quite a lot of places to look, and I've never even used a debugger XD. I'm guessing the potential problem areas could be: - The display driver (the older Radeon driver used for older AMD/ATI graphics chips) - Xorg, seeing as it's what's using lots of CPU power. - LightDM, seeing as the issue only occurs when I use LightDM. - My hardware (perhaps this could all be because of a hardware fault?) Has anyone got any experience of dealing with these kinds of problems? I should note that I'm satisfied with my workaround, so it's not at all important to me that this gets fixed, I just thought it might be interesting to look at. Hamish
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