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I am using Tmux, and I see these message appearing on every session, attached or not, after waking the laptop up from sleep:

Message from syslogd@parrot at Mar 28 23:17:54 ...
 kernel:[177769.535034] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 5: ee0000000040110a

Message from syslogd@parrot at Mar 28 23:17:54 ...
 kernel:[177769.535035] mce: [Hardware Error]: TSC 0 ADDR fef82240 MISC 78a0000086

Message from syslogd@parrot at Mar 28 23:17:54 ...
 kernel:[177769.535040] mce: [Hardware Error]: PROCESSOR 0:40651 TIME 1553811472 SOCKET 0 APIC 0 microcode 24

Message from syslogd@parrot at Mar 28 23:17:54 ...
 kernel:[177769.535044] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 6: ee0000000040110a

Message from syslogd@parrot at Mar 28 23:17:54 ...
 kernel:[177769.535044] mce: [Hardware Error]: TSC 0 ADDR fef82300 MISC 78a0000086

Message from syslogd@parrot at Mar 28 23:17:54 ...
 kernel:[177769.535048] mce: [Hardware Error]: PROCESSOR 0:40651 TIME 1553811472 SOCKET 0 APIC 0 microcode 24

This does not happen with a terminal that is not running Tmux, so I first though it was due to Tmux, but it doesn't appear to be.

I've tried dmesg -1, dmesg -D, changing the values of kernel.printk in /etc/sysctl.conf and reloading sysctl, and even putting 0 1 0 0 there did not change a thing.

I've read this, this, that, and so far nothing changed this behavior. I do find these messages in my /var/log/kern.log, but not at the same times, and I don't understand why these specific ones go to Tmux.

Nicholas Marriott at the tmux github said this, but it didn't help so far:

It sounds like syslogd has decided that it should send these messages to a terminal rather than a file and that a pty inside tmux is the best place to send them.

It's becoming really annoying as all of my sessions are flooded and it's even worse when vim is open.

closed as off-topic by G-Man, Prvt_Yadv, Shadur, Stephen Harris, muru Apr 6 at 17:26

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question has been posted on multiple sites. Cross-posting is strongly discouraged; see the help center and community FAQ for more information." – G-Man, Prvt_Yadv, Shadur, Stephen Harris, muru

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