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Mesa hm2/hm2_7i96s.0: error finishing read

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20 Jun 2024 21:32 #303447 by PCW
Not sure about the other parts, but:

6.7.12-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.7.12-1 (2024-04-24) x86_64 GNU/Linux.

Is not a real time kernel.

( It needs to say "PREEMPT_RT" )
 

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20 Jun 2024 21:39 - 20 Jun 2024 21:39 #303449 by rodw
The method I mentioned includes instructions on how to install the RT kernel too linuxcnc.org/docs/stable/html/getting-st...nate_install_methods
Last edit: 20 Jun 2024 21:39 by rodw.

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26 Feb 2025 10:41 - 26 Feb 2025 10:42 #322677 by vre
Mine mesa ethernet card has interrupts on cpu0 how can move it to cpu3 isolated for linuxcnc ?
Last edit: 26 Feb 2025 10:42 by vre.

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26 Feb 2025 12:21 #322688 by rodw
THere is a topic on the forum that explains but I am not logged in to link you to it. Its probably in this thread anyway.

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26 Feb 2025 14:25 - 26 Feb 2025 14:26 #322703 by JT
Almost 3 years later and I still have hm2/hm2_7i96s.0:error finishing read!

Grub quiet isolcpus=11 idle=poll r8168.EEE=0 pcie_aspm=off

john@cave:~$ sudo ethtool -i enp6s0
[sudo] password for john:
driver: r8169
version: 6.1.0-29-rt-amd64
firmware-version: rtl8168e-3_0.0.4 03/27/12
expansion-rom-version:
bus-info: 0000:06:00.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no
john@cave:~$ uname -a
Linux cave 6.1.0-29-rt-amd64 #1 SMP PREEMPT_RT Debian 6.1.123-1 (2025-01-02) x86_64 GNU/Linux

The r8168-dkms network driver is installed but ethtool reports the driver as r8169

This package provides the dkms source code for the r8168 kernel modules.
Kernel source or headers are required to compile these modules.

Is the above line from apt my clue?

JT
Last edit: 26 Feb 2025 14:26 by JT.

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26 Feb 2025 15:01 #322707 by PCW
Mine mesa ethernet card has interrupts on cpu0 how can move it to cpu3 isolated for linuxcnc ?

You can temporarily check if this helps:

 

File Attachment:

File Name: pinirq_2025-02-26.txt
File Size:1 KB


first

chmod +x pinirq.txt

then 

sudo ./pinirq.txt [ethernet_device_name_]

Where [ethernet_device_name] is the name of the Ethernet device connected to the 7I96S
(probably eth0, eno1 enp0s25 or similar)
 
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26 Feb 2025 15:16 - 26 Feb 2025 15:17 #322710 by PCW
Is the above line from apt my clue?

The problem that is fixed by the DKMS driver has fairly specific symptoms.

can you run:

sudo chrt 99 ping -i .001 -c 60000 -q 10.10.10.10
 (will run for ~ 1 minute)

and post the stats here

(assuming 10.10.10.10 card address)
Last edit: 26 Feb 2025 15:17 by PCW.

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26 Feb 2025 21:58 - 26 Feb 2025 21:59 #322755 by rodw
dkms builds the drivers from source so you need linux-headers installed for the kernel version you are using. but first you need to
sudo apt purge r8168-dkms

then reboot, then
sudo apt install linux-headers-$(uname -r)
sudo apt install r8168-dkms
Last edit: 26 Feb 2025 21:59 by rodw.
The following user(s) said Thank You: tivoi

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27 Feb 2025 10:47 #322782 by JT
I ran sudo apt purge r8168-dkms then rebooted now I have no internet connetion on that pc so I can't install anything via apt...

JT

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27 Feb 2025 11:48 #322784 by rodw
It happens, sorry I broke it... sometimes you can log in using another kernel on your system and resolve. I just can't remember how but I have been caught a few times...

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