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Red Hat Enteprise Linux/CENTOS 6 with Mellanox network interface stopped working after reboot: mlx4_en.ko needs unknown symbol

In a upgrade, after installing the kernel-2.6.32-696.20.1.el6.x86_64 on a Red Hat 6 it showed the following message

mlx4_en.ko needs unknown symbol mlx4_SET_PORT_BEACON

The network interface were not working after the reboot…

4,100 more words

Storage File Read Write - Linux File Caching

My custom board SD is having an a maximum speed of 132MHz from linux sys as shown below:

clock: 132000000 Hz
actual clock: 132000000 Hz
vdd: 21 (3.3 ~ 3.4 V)
bus mode: 2 (push-pull)
chip select: 0 (don't care)
power mode: 2 (on)
bus width: 2 (4 bits)
timing spec: 6 (sd uhs SDR104)
signal voltage: 1 (1.80 V)
driver type: 0 (driver type B) 314 more words
Embedded Linux

phpbb - new website

I have a web property, progressiverock.com, that’s been dormant ever since I rebranded my prog rock site after my book, strawberrybricks.com, a few years ago. One would think that the former URL is worth some money, but to date I have been unsuccessful in finding a buyer. 409 more words


How to resize an EBS volume from AWS

Welcome back! We will modify an EBS volume today, and then resize the root partition from your EC2 instance. It used be complicated and risky but it’s pretty easy nowadays, in fact, you will see how easy it is. 316 more words


Linux/Unix command line colors

Put some color in your terminal window.

On the following page you will find a really nice utility to bring some color to your unix, linux, mac osx terminal window/console. 78 more words