CentOS 5 :: Reset Eth0 Without Reboot
Jul 18, 2011
after the 5.6 update I started loosing the connection to my router. Having had issues with routers before I assumed that the router was on its way out. However I happended to have a laptop handy the other day and thought I would give it a try (after eth0 went down), router was fine(same cable too). I have tried bringing eth0 up/down (gui and ifdown/ifup) and restarted the network(gui and cli) but it will not get an ip(as I recall it does recognize that the cable is connected). If I do a reboot, eth0 comes up immediately. The log just shows repeated dhcp requests. I tried a dhclient -r but it errors out with no link found. It has been doing this since 5.6 came out (roughly once a day) so I THINK that it is not a hardware issue(should have died completely by now if it was). PSU voltages show stable and unchanged. It does use the forcedeath driver. 5.6-64bit fully updated.
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Feb 9, 2010
I'm getting 10000000's of syslog messages :
"eth0: PHY reset until link up"
- I have wireless and don't normally use an ethernet cable. From Googling round I found this bug report https://bugs.launchpad.net/ubuntu/+s...ux/+bug/270184 which appears to match the problem, however I do not feel happy/competent enough to recompile the driver as suggested in the bug fix. Is there a way to configure the driver so that it only tries the eth0 connection a limited number of times? This is Ubuntu 8.04 2.4.26-27 and SIS 191 chipset
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Jan 9, 2010
I am using a fresh Ubuntu 9.10 installation with english-only language but with a German keyboard.
So, once booted into my (only) account, I use the Keyboard Preferences app to change my Layout from US to German. Which works. I also remove the US keyboard so that the only layout left is German.
But upon a reboot, not only the US kbd is back in the layouts list, but the kbd also has defaulted back to US, so that I have to open the Kbd Prefs to again remove the US layout to get my German layout active again.
I also tried "Apply System-wide" and even logged in as root to make the same changes, but the system always goes back to US layout after a reboot.
This is also a problem when logging in after a reboot - I want the system to use German layout there, too.
So, how do I change the layout globally so that even at the login page I have my German layout already active?
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Apr 29, 2010
A few hours ago I upgraded my system, from Karmic to Lucid and I'm glad with it.But I have a problem, (two actually, I posted the second in other thread), Gnome is not remembering my Visual Effects configuration. I mean, I select the "extra" option and when reboot, it's back to "none".It will be a pain having to edit this every time my laptop starts.
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Jun 4, 2010
I am using RHEL 5.4 my root password is getting reset after every reboot.every time i had to change the password from kernel to access the root.i am unable to find the where the problem is.
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Sep 1, 2010
Dual boot system. Boot Linux Fedora 13 and the hardware clock is set to GMT. Boot Windows 7, time is wrong, as it expects the hardware clock to be set to the local time. reset the hardware clock each time I reboot in to the other O/S.
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May 26, 2011
I upgraded from fedora 14 to fedora 15 yesterday. I live in India (IST) which is GMT +05:30. Every time I boot, my system clock increases its time by 5 and a half hours. For example, system clock on my machine is now Wednesday May 26,2011 22:44. If I were to reboot now, the time I would get is Thursday May 27, 2011 04:14. How do I correct this?
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Mar 23, 2010
I installed Nvidia 195 version from their site and installed as per their instruction. Now, on reboot the resolution gets "800*600" while it should be "1366*768". What should I do?
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Apr 21, 2010
My screen resolution keeps reverting back to the default resolution 800x600. I'm using ubuntu 10.04, but had the same problem on 9.10 on my Acer Revo r3600 ION. I am able to change the resolution to 1280x1024 but have to do it by the nVidia configuration tool. The tool then allows me to 'Save to X Configuration'which it appears to have done successfully.See the sections from my 'etcx11xorg.conf' file. This is the state of the file after a reboot by the way.how I can get my desired resolution to persist after I reboot?
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Samsung SyncMaster"
HorizSync 30.0 - 81.0
VertRefresh 56.0 - 75.0
Option "DPMS"
EndSection
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Mar 26, 2010
I dont understand why but my theme changes everytime i reboot. The original theme Human changes to i think dust. when i open the appearance applet to change back the theme, the original human theme is already selected. So i have to select some other theme and then i select human theme, then the theme changes.Also the order of my taskbar icons changes and also the icons themselves.
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Oct 30, 2009
This is probably a newbie problem, so forgive me, but when I do this:chmod o+rw /dev/nst0It resets back to what it was upon reboot. How do I get this change to stick?I tried searching the forums and Google, but I haven't found an answer.
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Jun 17, 2010
Using slack 13.0 32-bit I have a dual-boot configuration with slack at sda1, sda2, sda3 and ubuntu 10.04 on sda6, sda7, sda8 When I boot into ubuntu, then boot back into slack, the date setting is change to '00.. something' (zero hours).
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Sep 8, 2010
I installed Open Suse 11.3 LXDE from the live CD I downloaded. My monitor settings reset to the highest resolution on every shutdown/reboot. Other settings like my wallpaper and removing the lock screen on screensaver also reset.
Is this there anything I can do to get settings/changes I make to stay?
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May 12, 2010
I'm using Ubuntu 9.10. Recently after an upgrade my Ubuntu started running in low graphics mode. After searching through forums, I could finally fix it.I'm not sure what exactly fixed it. I first changed the window manager to metacity. Run the following command:Code:sudo nvidia-xconfig --composite --render-accel --add-argb-glx-visualsAnd then changed window manager to compiz and desktop effects could be enabled.The problem is, everytime I reboot, its again running in low graphics mode, desktop effects cannot be enabled, and I have to do all the troubleshooting again! Any idea how to permanently fix this?EDIT: I found that the graphics is reset even without typing the command everytime. But I still have to switch back and forth from compiz window manager to set it all right!
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Oct 22, 2010
I have hauppauge pvr-350 which has an mpeg2 decoder with an RGB and s-video out to let me send video to my tv. I'm using the ivtv drivers which work well. To test the card I ran
Code:
cat test.mpeg > /dev/video16
-bash: /dev/video16: Permission denied
So then I did
Code:
ls -l /dev/video16
crw-rw---- 1 root video 81, 5 2010-10-22 12:21 /dev/video16
sudo chmod a+rw /dev/video16
[sudo] password for patrick:
cat test.mpeg > /dev/video16
However the permissions get reset everytime I reboot. Is there any way to pass an argument to the ivtv driver to change the default permissions?
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Apr 1, 2009
I just installed Fedora 10. I entered my static network info in Network Configuration. When rebooting, the eth0 says Inactive. I've read many articles about this problem on earlier versions and tried many of the suggestion, but have not found a definite way of solving this. Is there a better way or a workaround to get this machine on the network?
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Dec 26, 2010
i install kernel rpm after i boot that kernel network not working kernel name : kernel-rt-trace-2.6.24.7-132.el5.centos.i686 [URL] error "Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring."
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Mar 5, 2010
I'm using Ubuntu 9.10, and a usb webcam that is shown as 'Bus 001 Device 005: ID 0ac8:3450 Z-Star Microelectronics Corp.' by lsusb.
The problem is that on connecting the cam, it just works with the first program I start (skype, tokbox, messenger), and if I disconnect it or switch to another program, it stops to work and I have to restart my computer to make it work again.
Is there some good solution to reset the camera without rebooting to make it work again?
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Sep 7, 2010
Network card (82566DM-2 Gigabit Network Connection) is DISABLED upon reboot. Only way to bring it out of disabled mode is to rerun dhclient to obtain a DHCP lease. Upon reboot though, the NIC is back into disabled mode.
A workaround I have found is to uncomment the iface line in /etc/network/interfaces, but considering I have 14 identical PCs to this one, and only this one is currently giving me grief, I am trying to find the root cause
The machine successfully obtains an IP using the PXE boot option in the BIOS - so I can hopefully rule out hardware problems as a cause. Network cable has been replaced, as the location of the machine to a different switch port.
/etc/network/interfaces
Code:
# The loopback network interface
auto lo
iface lo inet loopback
[Code].....
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Jun 29, 2010
Eth0 and Eth1 is bonded and works fine but when i reboot the OS eth0 and eth1 cant be up when i run command "ifup bond0", it gives me following message.
OS information:
Network Card :
I am using above card , it works perfectly fine and I have bonded but when I reboot , eth0 and eth1 looses this driver and also the RPMS I have installed , they are gone too.
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Mar 3, 2010
I have my ubuntu box hard wired into my network. It all works fine, until I reboot my ubuntu box. After reboot, it can no longer see the network. I have it set up with a static ip. Not sure that I set it up completely correctly but it works fine...when working.. To fix the problem, I enter terminal: ifup eth0 That fixes all know problems until next reboot. What do I need to do so that it will remember settings and automatically be hooked into the network at power up?
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Apr 22, 2011
im trying to setup eth0 with subdevice eth0.0 and eth0.99 to come up at boot
eth0 is dhcp clint
eth0:0 is static ip
eth0.99 is 802.1q vlan interface
/etc/network/interfaces
Code:
auto lo
[Code]....
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Apr 28, 2009
I'm running a fresh install on an intel i7 system on an asus p6t deluxe v2 motherboard with the onboard NIC (Marvell Technology pci-e). I know the NIC is working as when I boot into the onboard OS that Asus provides (Asus Express Gate SSD)I have a working net connection.Booting up CentOS hangs at determining IP information for eth0 and eventually fails with the following error:PING xxx.170.30.1 from xxx.170.31.231 eth0: 56(84) bytes of data---xxx.170.30.1 ping statistics ---4 packets transmitted, o received, +3 errors, 100% packet loss, time 2999ms, pipe 3 failed.
RTNETLINK answers: file exists.
RTNETLINK answers: file exists.
RTNETLINK answers: file exists.
[code]....
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Oct 7, 2010
I have a lost password on an Intel DG33TL motherboard which I guess is only resetable by shorting the right jumpers on the board. I have two questions regarding that:
1- Is there any way I can reset the CMOS password through the CentOS? Or is that a thing of old motherboards where one could reset them through the OS?
2- Currently I have two hard drives installed in Raid1 (mirroring each other) through the motherboard RAID (not the through any RAID card or through CentOS). RAID was made prior to installing CentOS. So, would resetting the jumper mess up the whole RAID? I don't want trouble and I can leave without the password but it's good to know if need arises.
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Mar 6, 2009
How do I set my centos system to the configuration it had directly after the installation? Because there are so many messed up tings on here right now, firefox will only work with my proxy server if I put its IP directly into firefox but not if I put its IP into the system proxy settings and then point firefox at that. httpd refuses to serve up any kind of documen apart from the test page randomly and even then I sometimes get a 403 error. Seriously is this the normal practice for setting up a LAMP server???
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Nov 4, 2009
I have a Centos 5.3 desktop that I have a development board connected via a serial connection to. The permissions on /dev/ttyS0 are currently set
crw--w---- 1 root root 4, 64 Nov 4 13:56 ttyS0
I have changed them so that they read
crw-rw---- 1 root uucp 4, 64 Nov 4 13:56 ttyS0
But every time I initialize the dev board the permissions switch back to the original state. I have found lots about preventing the permissions switching back upon reboot but that doesn't appear to be the problem.
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Nov 5, 2009
I have messed around with yum config files & my system is not updating anymore! is there is a way to reset yum configuration to its default?
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Jun 2, 2011
I have to recover / reset root password. I do not have the 5.3 cd, can I boot with the CentOS-5.6-i386-LiveCD.iso [URL] and follow the recovery procedure outlined below [URL]
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Mar 17, 2010
I am an old days RH release user(from 6.x) and just switching back from Debian/Ubuntu to CentOS on some servers, but I can not understand the kernel update strategy currently enabled in CentOS.There are two boxes, with almost identical installation, but recently there was an auto update of kernel on one box. This auto update also seems to issue an auto reboot on the machine, which is unacceptable on server machines.
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Jun 3, 2011
I'm unable to reset using either the reset option in gnome shell or the command using a terminal. When I select it the shell exits and displays the graphic "exploding" and then it just sits there. Shutdown works fine; just no reset. Any ideas? I've installed from the DVD. I booted the live CD and it resets just fine so I know it's no my hardware
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