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#dmesg

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When was the last time that you ran

`dmesg|less` on your linux system?

You **NEVER** did?

You dont know what you are missing my POSIX dweller!

Look at the awsome input to your brains!!!

Of course you should first run

`man dmesg` since you should not trust a command which uses sudo from a stranger on the internet

man7.org/linux/man-pages/man1/

<< dmesg - print or control the kernel ring buffer

Yes on debian based machines, for some odd reason you are not allowed to run dmesg anymore as a regular user, so I run

`sudo dmesg|less`

Now you know what dmesg does, run it and learn to the bit, what happens on your linux machine when you cycle through the POST sequence

#POSIX#Linux#dmesg

Now you will ask why I put up a screen cap of Naked.Gun.33.1.3.The.Final.Insult in this thread.

The logic is simple. Because I now have tsc=unstable in my permanent boot options in GRUB, I have achieved playing this 1080p stream on my machine without any hickups of mPlayer!

mPlayer has the gorgeous option of bailing out by itself if you have CPU/GPU/FPU or RAM issues, protecting an unstable machine as my Gigabyte miniPC. Since the switch mPlayer did not have to bail out!

@altbot

#GRUB#bash#csh

I'm going to include another photograph to give you an indication of how complex GRUB is in comparison to Legacy Lilo

When I press tab twice in Rapid Succession, the whole screen is filled with commands that I can execute within the GRUB sh {command environment}

I literally have to read all the man pages of those GRUB sub commands which give me an indication that they can do what I want, just so I can pass the parameters to the kernel

GRUB has made the distance between the command prompt and the kernel much bigger!

#bash#csh#ksh

I dived into the disappearance of Lilo on all distro's. It turns out that Lilo was only usuable on BIOS, it did not evolve to UEFI systems.

I wanted to easily pass commands to the kernel pre-boot. Before I dive into the workings of grub, can anyone tell me where i Need to go to parse pre boot parameters through grub to the kernel?

en.wikipedia.org/wiki/LILO_(bo

#bash#csh#ksh

Jumping in deep immediately

OS Linux
Kernel 6.x
found workaround for hardware errors on critical timer tsc

snippet from dmesg

[ 0.000000] tsc: Fast TSC calibration using PIT
[ 0.000000] tsc: Detected 1796.607 MHz processor

snippet two

[ 0.068905] AMD-Vi: Using global IVHD EFR:0x206d73ef22254ade, EFR2:0x0
[ 0.069804] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[ 0.074120] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x19e5a467a58, max_idle_ns: 440795257552 ns
[ 0.074127] Calibrating delay loop (skipped), value calculated using timer frequency.. 3593.21 BogoMIPS (lpj=1796607)
[ 0.074141] Zenbleed: please update your microcode for the most optimal fix

line [ 0.074141] clearly states that my microcode is not updated (not related to tsc)

[ 0.210124] TSC synchronization [CPU#0 -> CPU#8]:
[ 0.210124] Measured 2808 cycles TSC warp between CPUs, turning off TSC clock.
[ 0.210126] tsc: Marking TSC unstable due to check_tsc_sync_source failed
[ 0.210176] #1 #3 #5 #7 #9 #11 #13 #15

I added tsc=unstable to the boot options in grub, so from what I read here the parameter was passed to the kernel? Can someone please verify for me if this output states that?

The warning I get is that the BIOS of this machine is broken! and that the option tsc=unstable will work around that massive bug

#bash#csh#ksh

Ich bin noch nach Korrelation am suchen, aber dem ersten EIndruck zufolge startet mein Laptop unter 50% Akkustand deutlich langsamer, als darüber.
Bei vollem Akku lande ich (inkl. Passworteingabe) nach ~14 Sekunden in Plasma.
Bei Akku 50% dauert das ca. 2 Minuten und das System ist super träge. offenbart... nichts. Es dauert einfach nur alles lange.
Die Korrelation mit dem Akkustand ist bisher (nach zwei Vorkommnissen) die einzige Korrelation, die ich finden kann.