General :: USB Port Nn Disabled By Hub (EMI?), Re-enabling
Oct 31, 2010
getting this occasionally in dmesg USB port nn disabled by hub (EMI?),re-enabling and I would like to know: What does the message mean, exactly? What is the actual hardware error code from the USB subsystem? Under what conditions would the root hub disable the port?Is it related to the USB power or the USB data lines? If it's power, what aspects of the USB power does the root hub monitor? Voltage out of limits? Current spike? Ground bounce?Can this power monitoring feature be turned off in the Linux driver settings?
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Jun 29, 2011
I was having some trouble with dual display on my laptop, so I loaded the system using the nv graphics driver. I got some message from gnome3 saying that my display configuration wasn't supported, and then it fell back to something that looks similar to gnome2. I switched back to the nouveau driver, but gnome3 didn't come back. Does anybody know how to switch it back?
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Aug 24, 2010
To all those who hit this after installing 11.3: Enable the tapping function of your touch pad by adding Option "TapButton1" "1" to /etc/X11/xorg.conf.d/20-synaptics.conf. then restart X (relogin). It will work with all WMs for which SuSE didn't bother to add a GUI config function/utility (xfce, WMaker, twm/fvwm, etc).
To SuSE: WHY? Why is this disabled by default? Why has a system/HW function to be enabled at WM level?? Why only KDE/Gnome?
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Oct 16, 2009
Jst to tryout ufw I tried to close port 80 on my pc. I'm using Ubunutu 9.04. I sudo ufw enable sudo ufw deny 80. But nmap localhost shows port 80 open why? How can I close it? I will need to control some ports on my next server.
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Apr 12, 2011
when i am enabling mysql in server (port 3306) it does'nt work. but when i execute iptables -F it works what may be the reson?
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Feb 21, 2010
I went to shut down a Dell Inspiron 1545 laptop, and about halfway through the little yellow/orange bar the screen went black and it said:
"xxx.xxxxxx hub 2.0: 1.0 connect-debounce failed port y disabled" (xxx.xxxxxx being a different number string each time, and y being a port number)
It gives me that message for 3, sometimes 4, ports--3 times (port 2, port 3, port 1, port 2, port 3, port 1, etc.). Once I got that while starting up. Near the end of that colored bar, it gave me the black screen, and then this big long list of stuff it was checking. When it got to starting Bluetooth, it started that connect-debounce thing for all the ports. Then there was some other stuff that disappeared faster than I could write it down. However, Ubuntu did a system check the next day, and that start up issue disappeared--at start up and shut down. A couple of days ago, it started the connect-debounce thing on shutdown again. Ubunutu did a system check, but it did not fix the shut down issue or get the USB mouse/items to work.
I post the below output.
coach@coach-laptop:~$ tail -f /var/log/messages
Feb 21 15:06:13 coach-laptop -- MARK --
Feb 21 15:26:13 coach-laptop -- MARK --
Feb 21 15:46:13 coach-laptop -- MARK --
Feb 21 16:06:13 coach-laptop -- MARK --
Feb 21 16:26:13 coach-laptop -- MARK --
Feb 21 16:46:13 coach-laptop -- MARK --
Feb 21 17:06:13 coach-laptop -- MARK --
Feb 21 17:26:13 coach-laptop -- MARK --
Feb 21 17:46:13 coach-laptop -- MARK --
Feb 21 18:03:59 coach-laptop kernel: [385082.408075] usb 2-2: USB disconnect, address 44
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May 24, 2010
[ 1066.959529] hub 2-0:1.0: connect-debounce failed, port 5 disabled Error driving me nuts keeps popping up when im trying to use the command line when i drop to shell. Does this mean one of my usb ports is messed? Ive tried resetting bios.
Information I can give below:
Output: uname -a
Code:
Linux kaao-desktop 2.6.26-2-amd64 #1 SMP Tue Mar 9 22:29:32 UTC 2010 x86_64 GNU/Linux
(Debian Lenny AMD64)
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Oct 28, 2010
I did a fresh install of OpenSuSE 11.3 KDE 64-bit on my new laptop. Worked like a charm. But I brought it with me to work without connecting it to a wi-fi and now the network manager doesn't want to start when I'm back in range of my home connection. Also, whenever I try to launch KNetworkManager, it won't load up a window and I still can't connect. This is even disabling the Ethernet port also.
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Sep 14, 2010
Connect debounce failed port 3 disabled. i get this in the terminal (alt+f1) every time i log on. i like this terminal better than the standard one and i want the error message to stop appearing every time i try to type something.
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Oct 21, 2010
VERY new to linux, erm but I have an issue that needs solving!I recently moved to university, where their network blocks sftp port 22, this means that I cannot connect to my FTP server which is running a version of linux.Now I've got this ftp server connected to a seedbox and it was created using the following walk through..Code:I have written this guide for a friend, but I though it would be useful for others as well.
There are several guides floating around, but I found that most always cock up in some way. This one is tried and tested to work on Debian Etch (on an OVH rps, but should apply to most servers).If there is a new stable release of rtorrent/libtorrent then I will update this guide to show you how to update it (without reinstalling the whole server).
At the bottom there are also instructions to install ftp access & some network monitoring software.Basically, I would really like someone to be able to construct the commands on how to change the listen port for sftp connection on linux or add another port to the list that Linux would use so that I could put in through putty.
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Jul 20, 2010
I tried to make "ssh tunneling", but failed and got this message.
Quote:
Administrator@windstory-PC /
$ ssh -R 7869:localhost:7869 windowsstudy@192.168.0.4
windowsstudy@192.168.0.4's password:
Warning: remote port forwarding failed for listen port 7869 Last login: Wed Jul 21 01:56:04 2010 from 192.168.0.2 -bash-3.2$
1. system environment
192.168.0.2 - windows 7 + copssh
192.168.0.4 - centos 5.4 x86 + openssh
2. Guide for setting "ssh tunneling"
[URL]
3. Added this to sshd.conf
Quote:
AllowTcpForwarding yes
4. "netstat -na|grep 7869" at 192.168.0.4
Quote:
[root:maestro:~]# netstat -na|grep 7869
tcp 0 0 0.0.0.0:7869 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:7869 127.0.0.1:53539 ESTABLISHED
[code]....
5. result of "ssh -vvv -R 7869:localhost:7869 windowsstudy@192.168.0.4"
Quote:
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
[code]....
6. I added 7869 for telnet service as follow;
Quote:
mytelnet 7869/tcp # My Telnet server
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Mar 31, 2010
I'm using Linux Kernel version 2.6.33 on a server with Intel Xeon X5570.
I assume that Intel's DCA is already enabled on my system, because I see
Code:
I would like to test the effects of with and without DCA. How can I disable DCA?
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Feb 18, 2010
I want to do a simple port redirect, i.e. whatever comes trough whatever interface on port AAAA will get redirected to port BBBBI thought that iptables -t nat -I PREROUTING --source 0/0 --destination 0/0 -p tcp --dport AAAA -j REDIRECT --to-ports BBBBhowever it doesn't work, e.g. nc -v -w2 -z localhost AAAA gives:
nc: connect to localhost port AAAA (tcp) failed: Connection refused
while
nc -v -w2 -z localhost BBBB
[code]....
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Dec 4, 2010
When I try to set my number of desktops to "4" on the KDE control module, it reverts back to having only two. I downloaded and installed the current ATI driver (ati-driver-installer-10-11-x86.x86_64.run) and everything works as it should with compiz, except for desktop cube, because I only have two desktops. I never had a problem while running Ubuntu, just with backtrack 4 r2. By the way, I have it installed and not running on a virtual box.
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Jun 15, 2010
In my .vimrc file I have this line..filetype plugin indent on and then in ~/.vim/ftplugin/py.vimrc (I've also tried saving it as a .vim file) I've copied and pasted a vimrc file for python standards and have enabled all of the suggested settings in it (uncommented them). When I create and open a test.py file and do something like a tab, it goes 8 spaces instead of 4.
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Jan 8, 2010
have Acer Aspire One netbook with Linux Linpus Lite. I have downloaded Java in order to be able to play Yahoo games, to no avail, each time I try I get the reply "Java is not enabled in your browser" and I cannot get it to work. Is it possible that Yahoo games only work in Windows?
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Sep 6, 2010
My test server is going well for the past 2 months. I have learned a lot from searching the net for how to's and forums on questions I have. My next task on the to-do list is enabling ssl on my mail server. I have the ssl setup with an automatic redirect from http to https.It is working fine with a minor issue.I have 2 domains and several subdomains on the server. Since I have enabled ssl, it seems for any of the domain/subdomain links I type in with a https://, it takes me to my mail server site. How can I have it set to only one secure link to my mail server?
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Apr 11, 2011
How can I enable the statistic module in iptables?
I have
Fedora13 32 bits
iptables-1.4.7-2
kernel 2.6.18
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Dec 11, 2010
I am using ubuntu 10.04 on lenovo g430, last night I switch off the device while it was connected to network and shut down the computer. But after that i switch on the device was disabled.I use to enable the device through Fn+F5 key which controls the device in windows but the keys does not work in ubuntu. I am using broadcom 802.11g device.
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Jul 10, 2011
I have a src package which uses automake for make. How can I view the available options in configure command for enabling and disabling options?
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Apr 17, 2010
I recently installed Ubuntu 9.10 on a Lenovo Thinkpad x100e and cannot figure out how to enable the wireless internet connection.
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May 24, 2011
I have a problem with the unix firewall (gufw). I'm using Linux Mint Debian Edition. The problem appears when I double click on the icon to bring it up for configuring. Everything is grayed out so I click on the "unlock" button. Normally, this is when gufw comes alive with color. But all I get now is a note on the bottom of the gray screen that says "Wrong Identification". Uninstalling and reinstalling UFW and GUFW didn't fix the problem. I would like to have my firewall working for me.
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May 2, 2010
I have a mail server i need it to send message via port 587 not port 25, i make some changes to my postfix server which i use and it is already successed making a telnet to 587 port like it :
[Code]....
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Apr 8, 2010
For some reason my desktop icons have decided to be very small and can't be changed (systemsettings/appearances/icons/advanced) It happened after I enabled and downloaded the files need for compiz. I have disabled compiz and now have no 3D desktop effects, but still cannot alter the desktop icon size. What have I done?
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May 11, 2011
Trying to figure out why the following two are treated differently...
Code:
*.warn;
kern.!=debug;auth.none;
authpriv.none;cron.none;mail.none;news.none -/var/log/syslog
and
[Code]....
According to man syslog.conf "You can specify multiple facilities with the same priority pattern in one statement using the comma (``,'') operator. You may specify as much facilities as you want. Remember that only the facility part from such a statement is taken, a priority part would be skipped."
Can someone confirm that this statement means that kern.!=debug is ignored in the first part because it's priority is not the same as the trailing facilities ending in .none?
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Jan 11, 2010
Can we enable IP tables to forward multicast or broadcast messages?
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Jul 7, 2010
I'm running Linux Mint 9 with Gnome.
I don't want my wireless network card to be automatically enabled in Network Manager when I start my computer. I keep setting it to disabled in Network Manager but when I reboot Network Manager has re-enabled it again.
Is there some way of starting with wireless disabled until I tell Network Manager to enable it?
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Aug 25, 2011
I have some init scripts that launch some daemons that I wrote. I want Linux to generate a coredump anytime something crashes. I activated coredumps in /etc/security/limits.conf by adding the next line:
* hard core 100000 After rebooting, I run ulimit -a and I can see that coredumps are not activated: > root@computer:~# ulimit -a > core file size (blocks, -c) 0 First, I checked if there is any file script on my system that deactivates coredumps (greping ulimit -c 0 ), but I didn't find anything so far.
Then, I created a bogus c program..to double check if it's working, and I can confirm that it's not. The program is this
[Code]...
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May 9, 2010
While booting Linux it takes ages for 'enabling swap space'
I have allocated swap space twice that of the RAM.
Is there a way to fix it? What should I do to avoid this in the future installs?
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Jan 4, 2011
I can get into the BIOS just fine but cannot find anything such as NX or Exucute Disable mode( on or off) Does anyone have any ideas? I contacted Acer support and they may be able to help only if I pay for their support. AS of now I have Ubuntu 10.4 installed and upgraded to 10.10 but have black screen with message about (NX) or Execute Disable in bios. The message says---This CPU is family 6, model 37, and has NX capabilities but is unable to use these protective features because the BIOS is configured to disable the capability. Please enable this in your BIOS. I have windows 7 professional on one partition and Ubuntu on the other partition. I can still access Ubuntu 10.4. but have the black screen on 10.10
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