On Fri, Jun 14, 2024 at 10:00:26PM +0200, jpeter17359...@tutanota.com wrote:
[Setting Mail-Followup-To to debian-user, as Felipe pointed out] [My question was, for those confused by top posting: at which point at boot the fan speeds up] > Yes, I am using Debian 12.5. It's a new install on a Dell laptop, which > previously ran Windows, and it never had any cooling issues. > > The fan runs at very high RPM (probably on maximum) for a couple of seconds > on boot. > > It seems to happen at the point where it reaches this line: > [OK] Reached target sound.target - Sound card. > > The fan otherwise behaves normally, and sound plays fine, except XFCE event > sounds don't work (log in/out, emptying trash, etc). OK, the Linux kernel has definitely taken over at that point. I asked the question because I've observed a similar behaviour (mainly on desktops), but this happens much earlier, while the BIOS is still in charge, before the the kernel has taken over. I'm not very knowledgeable on what happens when (especially if systemd is involved, but you could try to look into your boot log with "journalctl -b". Perhaps you find out what is happening around the start of sound.target. Cheers -- t
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