"Failed to find cpu0 device node" - remove error?

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"Failed to find cpu0 device node" - remove error?

Postby tedrogers » 2017-08-28 17:51

Hi,

On my Lenovo T500 laptop with Debian 9.1, I have the "Failed to find cpu0 device node" error on boot.

My kernel:

Code: Select all
me@t500-debian:~$ uname -a
Linux t500-debian 4.9.0-3-686 #1 SMP Debian 4.9.30-2+deb9u3 (2017-08-06) i686 GNU/Linux


I understand that it is harmless - simply that there is a part (node?) on my CPU that doesn't exist, and the kernel inquires at boot only to get no response. Everything works fine, except I'd like not to see this error at every boot.

Installing Plymouth does not conceal it. In fact, there is little point in having plymouth at all since my system boots too quickly to play any animation effectively anyway!!

That's another story though.

Any ideas on how to remove the "Failed to find cpu0 device node" error, or hide it, so I don't have to look at it every day?

Thanks.
tedrogers
 
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Re: "Failed to find cpu0 device node" - remove error?

Postby TonyT » 2017-08-28 22:27

May or may not be related, but afaik the T500s use a Centrino core 2 processor. If so then why are you not using the amd (64bit) kernel?
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Re: "Failed to find cpu0 device node" - remove error?

Postby tedrogers » 2017-08-28 22:58

TonyT wrote:May or may not be related, but afaik the T500s use a Centrino core 2 processor. If so then why are you not using the amd (64bit) kernel?


I was always under the impression this was a 32-bit CPU...it won't run Windows 10, and when I've tried to use 64-bit live on this machine, it fails with incorrect architecture warning.

However, you might be correct!

Code: Select all
lscpu


...produces:

Code: Select all
Architecture:          i686
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list:   0,1
Thread(s) per core:    1
Core(s) per socket:    2
Socket(s):             1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 23
Model name:            Intel(R) Core(TM)2 Duo CPU     P8400  @ 2.26GHz
Stepping:              6
CPU MHz:               800.000
CPU max MHz:           2267.0000
CPU min MHz:           800.0000
BogoMIPS:              4521.66
Virtualization:        VT-x
Flags:                 fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf eagerfpu pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm tpr_shadow vnmi flexpriority dtherm


I am confused! Will have to investigate this now!

It seems as though it is 64-bit capable.

Which raised another question...is it possible to convert 32bit Debian into 64bit Debian?

https://wiki.debian.org/Migrate32To64Bit

Code: Select all
grep -q '^flags.* lm ' < /proc/cpuinfo && echo yes


Will see what this yields first. Currently creating a live 64-bit Debian USB to test that first.

Thanks.
tedrogers
 
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Re: "Failed to find cpu0 device node" - remove error?

Postby None1975 » 2017-08-29 11:55

I think, it is not possible. Maybe i am wrong, but much simple is a clean install. By the way, the instructions on Debian Wiki https://wiki.debian.org/Migrate32To64Bit, is outdated...
OS: Debian 9.1 / WM: Openbox
Debian Wiki | DontBreakDebian
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"Failed to find cpu0 device node" - remove error?

Postby tedrogers » 2017-08-29 15:48

None1975 wrote:I think, it is not possible. Maybe i am wrong, but much simple is a clean install. By the way, the instructions on Debian Wiki https://wiki.debian.org/Migrate32To64Bit, is outdated...
Oh ok.

My /home is on a separate partition, so should be straightforward.

I confirmed my T500 is 64bit capable as well.

Thanks.

Sent from my Lenovo P2a42 using Tapatalk
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