Mesa hm2/hm2_7i96s.0: error finishing read

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3 years 2 months ago #278162 by tommylight

The error occurs for me when I switch off my suction (SSR relay), I pull the plug and switch off, nothing happens.
For you it is the interference causing it, but this topic is related to Linux Kernel issues on 6.x version of it.
This error occurs without switching anything, if using 6.1 kernel and Intel network card.
The solution to this is mentioned several times here and elsewhere.
The solution for you might be just getting the grounding wired properly, or might need a ferrite core wound around the suction motor wires.

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2 years 11 months ago #285449 by spumco
[Rather than starting a new thread, I'll continue here...]

Starting to commission a new build and I'm getting the error finishing read problem crop up within seconds of starting LCNC and could use some help diagnosing.

PC: HP elitedesk 800 G2 mini
NIC: Intel i219LM
LCNC: 2.9 from ISO on LCNC home page
Kernel: 6.1.0-13 (haven't messed with this)

etc/network/interfaces:
auto lo
iface lo inet loopback
auto eno1
iface eno1 inet static
address 10.10.10.1
hardware-irq-coalesce-rx-usecs 0

Grub:
isolcpus=3 intel_pstate=disable processor.max_cstate=0 idle=poll cpufreq.default_governor=performance i915.enable_dc=0 ahci.mobile_lpm_policy=1 irqaffinity=0 nomodeset quiet

Good latency after fiddling with grub.  Just copied the above from the latency thread, don't really understand the backstage stuff.

 

LCNC terminal output:
Warning: Spoiler!


Ping times
Warning: Spoiler!


Would trying a later kernel (6.3,6.4,etc.) help?  I did see mention elsewhere here that there is a recently fixed bug related to Intel i219LM NICs...but don't know if that's related or when the fix will make it to kernels appropriate for LCNC.

Thx

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2 years 11 months ago #285451 by PCW
I would suspect BIOS settings most.

Is AMT disabled in the BIOS setup?

Are Hyperthreading, C states > C1, EIST, Turbo modes all disabled?

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2 years 11 months ago #285453 by spumco

I would suspect BIOS settings most.

Is AMT disabled in the BIOS setup?

Are Hyperthreading, C states > C1, EIST, Turbo modes all disabled?
 

Thanks for chiming in PCW... hoping you'd show up for this one.

AMT disabled
Turbo-boost disabled
Hyperthreading disabled
Multi-processor enabled
All power management options disabled

I don't know what C states or EIST are or where they are in the bios.

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2 years 11 months ago #285499 by tommylight
The following user(s) said Thank You: spumco

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2 years 11 months ago #285516 by spumco
Thanks Tommy.

Of course I'll swap the cable out when I get home tonight, but wouldn't a dodgy LAN cable also result in errors while pinging the 7i96s?
 

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