Cinelerra: MWindow::init_shm: /proc/sys/kernel/shmmax is 0x1000000 It should be at least 0x7ffffff

Posted on in Categories , last updated July 10, 2012

I‘m trying to use Cinelerra video editing and compositing software under Linux operating systems. However, I’m getting the following error:

MWindow::init_shm: /proc/sys/kernel/shmmax is 0x1000000.
It should be at least 0x7ffffff for cinelerra.

How do I fix this problem?

Linux: Reset High Speed USB Device Using ehci_hcd Error and Solution

Posted on in Categories , last updated October 13, 2011

I’ve recently installed CentOS / RHEL 6.x on the server. I’m getting the following messages in /var/log/messages file logged frequently :

Oct 13 14:00:20 server1 kernel: usb 1-7: reset high speed USB device using ehci_hcd and address 2
Oct 13 14:05:57 server1 kernel: usb 1-7: reset high speed USB device using ehci_hcd and address 2
Oct 13 14:09:18 server1 kernel: usb 1-7: reset high speed USB device using ehci_hcd and address 2
Oct 13 14:11:42 server1 kernel: usb 1-7: reset high speed USB device using ehci_hcd and address 2
Oct 13 14:11:49 server1 kernel: usb 1-7: reset high speed USB device using ehci_hcd and address 2

How do I solve this problem?

Debian / Ubuntu Linux Disable / Remove All NFS Services

Posted on in Categories , last updated May 3, 2017

NFS was not designed with security in mind, and has a number of weaknesses, both in terms of the protocol itself and because any NFS installation must expose several daemons, running on both servers and clients, to network attack. I use my Debian / Ubuntu Linux based server only to server web pages and nothing else. How do I disable NFS services under Debian or Ubuntu Linux?