01-04-2011
The system froze again, but this time after quite a copule of weeks, this time the office was closed for the holidays and no one logged in or using the system.
and further more I cant find any clue / logs for this freezing.
8 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I recently upgraded a system from php 4.4.2 to php 5.2.1, and one of my scripts has started behaving very strangely. I've tried google but come up blank so far.
Basically what the script does is select a large amount of data from a mysql (4.1.21) database, do some manipulation, the plots a graph... (4 Replies)
Discussion started by: Unbeliever
4 Replies
2. Linux
Hi,
I wrote a kernel module that did a virtual network protocol and library that provide interface for application use to interact with the kernel module by ioctl actions.
insmod the module and unload the module, there will be no problem. But once I call the library with my example... (0 Replies)
Discussion started by: a2156z
0 Replies
3. SCO
Hi,
My SCO server freezes suddenly. I just want to know if there any tools / commands availble that can find which is causing the freeze?
Any help on this would be greatly appreciated.
Regards,
Ravikumar R (4 Replies)
Discussion started by: rrb2009
4 Replies
4. AIX
Guy's
I have user calld appuser
home directory of this user is : /app/application
when this user login , user will be direct under this directory /app/application
I want to keep and freeze this user in his home directory to be able to access only his home directory and denied it... (2 Replies)
Discussion started by: Mr.AIX
2 Replies
5. Linux
I got a dual boot with grub2, but everytime I turn on the computer and the booter is loaded, I can't handle the menu, so I am forced to wait the countdown and choose the default option.
I'd really like to know why!
This is my grub.cfg,
# # DO NOT EDIT THIS FILE # # It is automatically... (0 Replies)
Discussion started by: Luke Bonham
0 Replies
6. Debian
Hi
I try to install debian 6.0.1 on hp rx2600.
I boot from the CD i get first boot menu ( i can choose Install/Install(expert)/Rescue modes) after i choose one of above i see messages like :
(..) Uncompressing linux..done.
(...) Loading file /initrd.gz.. done
(...)
Linux Version... (2 Replies)
Discussion started by: chesti
2 Replies
7. Solaris
Hi,
I tried to boot the Solaris 11 install DVD the other day and I can't get past the "SunOS" text banner on the clear/newscreen. It just hangs with a solid block cursor. I have a new computer and that might be the problem, but what I want is more verbosity maybe, some kind of detailed... (2 Replies)
Discussion started by: eax
2 Replies
8. Cybersecurity
hello
is there any freeze software for Linux-redhat system to prevent any changes on /root
(wish open topic on right forum) (3 Replies)
Discussion started by: nimafire
3 Replies
UBT(4) BSD Kernel Interfaces Manual UBT(4)
NAME
ubt -- USB Bluetooth driver
SYNOPSIS
ubt* at uhub? port ? configuration ? interface ?
DESCRIPTION
The ubt driver provides support for USB Bluetooth dongles to the Bluetooth protocol stack.
USB Bluetooth dongles provide two interfaces, both of which the ubt driver claims. The second interface is used for Isochronous data and
will have several alternate configurations regarding bandwidth consumption, which can be set using the hw.ubtN.config sysctl(8) variable.
The number of alternate configurations is indicated by the value in the hw.ubtN.alt_config variable, and the isoc frame size for the current
configuration is shown in the hw.ubtN.sco_rxsize and hw.ubtN.sco_txsize variables.
By default, configuration 0 is selected, which means that no bandwidth is used on the Isochronous interface and no SCO data can be sent.
Consult the Bluetooth USB specification at https://www.bluetooth.org/ for complete instructions on setting bandwidth consumption. The fol-
lowing extract may be useful as a general guidance though details may differ between manufacturers.
0 No active voice channels
1 One voice channel with 8-bit encoding
2 Two voice channels with 8-bit encoding, or one voice channel with 16-bit encoding.
3 Three voice channels with 8-bit encoding
4 Two voice channels with 16-bit encoding
5 Three voice channels with 16-bit encoding
SEE ALSO
bluetooth(4), uhub(4), sysctl(8)
HISTORY
This ubt device driver was originally a character device written by David Sainty and Lennart Augustsson. It was rewritten to support socket
based Bluetooth access for NetBSD 4.0 by Iain Hibbert.
CAVEATS
Isochronous data is seemingly not well supported over USB in the current system and to get SCO working, you may have to calculate the SCO
packet size that the stack will use. This is the sco_mtu value reported by the btconfig(8) command, and when combined with the SCO header (3
bytes) should fit exactly into an integer number of Isochronous data frames where the frame size is indicated by the 'hw.ubtN.sco_txsize'
sysctl variable.
For example: I want one voice channel (which is all that is supported, for now) so am using configuration #2, with a frame length of 17
bytes. This gives possible values of:
(17 * 1) - 3 = 14
(17 * 2) - 3 = 31
(17 * 3) - 3 = 48
(17 * 4) - 3 = 65
(17 * 5) - 3 = 82
etc.
btconfig(8) shows the maximum SCO payload as 64 bytes, so I am using the next smaller size of 48, to minimize the overhead of the 3 header
bytes.
The SCO packet size can be changed using the 'scomtu' option to btconfig(8).
The failure mode is that the USB Bluetooth dongle locks up though generally removal/reinsertion will clear the problem.
BUGS
The Isochronous configuration can only be changed when the device is not marked up.
BSD
August 27, 2006 BSD