Re: [CentOS] CentOS 5 takes one second holding each keyboard key until it shows.
On Thu, August 28, 2014 3:30 am, Reinhard Dunkel wrote: > > On CentOS 5, I use command "su" to show a root shell. On CentOS 7, su no > longer works and I use "ssh root@localhost" instead. (I have not tried > SSH to access my CentOS systems remotely yet.) > I believe, [on CentOS 7] the user should be in the wheel group to successfully use su command (when he gives root password to the contrary to sudo command when one gives one's own password) I hope, this helps. Valeri Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5 takes one second holding each keyboard key until it shows.
On Thu, Aug 28, 2014 at 6:32 AM, David Both wrote: > This has happened to me in the past. It is not an OS problem, it was for > me a > hardware issue. One or both of two things may be causing this problem. > > Some USB keyboards require more power than others. My USB keyboard would > exhibit > these same symptoms when plugged into a hub that was powered only by the > computer itself or another hub. So my particular USB keyboard must be > plugged > into a hub that has its own power supply. > Definitely try another keyboard as others have suggested. And another USB port ... maybe even try a PS2 keyboard if the mobo has one and you have one of those keyboards handy. On the topic of power... It's possible that your power supply is failing. You'll experience sluggishness ... it might take a few minutes to shutdown or reboot where it should only take a few seconds. Or when it gets worse, the machine refuses to turn on. If you can run a rescue OS on the system and it still acts up, then its most likely a hardware problem. >From there you get to swap "known good" components to track down the problem. ;-) -- ---~~.~~--- Mike // SilverTip257 // ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5 takes one second holding each keyboard key until it shows.
This has happened to me in the past. It is not an OS problem, it was for me a hardware issue. One or both of two things may be causing this problem. Some USB keyboards require more power than others. My USB keyboard would exhibit these same symptoms when plugged into a hub that was powered only by the computer itself or another hub. So my particular USB keyboard must be plugged into a hub that has its own power supply. Also, I have found that some USB keyboards are especially likely to exhibit these same symptoms when plugged into an unpowered USB 3 port. Login remotely via SSH never exhibited any of these keyboard symptoms. Perhaps this is the cause of your problem as well. On 08/28/2014 04:30 AM, Reinhard Dunkel wrote: > On 08/27/2014 06:07 PM, SilverTip257 wrote: >> On Tue, Aug 26, 2014 at 10:54 PM, Reinhard Dunkel >> wrote: >> >>> I used CentOS 5 for years. Suddenly, it takes one second holding a >>> keyboard key until it shows on the screen: >>> >>> >> Is this system accessible via SSH? >> Does the behavior only happen when using the physical keyboard? >> >> Might it be out of physical memory (RAM) and swapping violently? >> Disk thrashing of this sort can cause rather irritating delays. >> >> Or maybe a failing or failed drive? (Assuming you could have a hardware or >> software RAID setup) > Does CentOS now only support user request tracking by email? I cannot > find this thread on the CentOS web site... > > My computer has 4 GB Patriot memory - the maximum amount the motherboard > allows. Using command "top" shows less than one percent of CPU and > memory are in use. The computer is idle. I am using a 1 TB WD disk for > CentOS 5 and a 2 TB Seagate disk for CentOS 7. No RAID. > > On CentOS 5, I use command "su" to show a root shell. On CentOS 7, su no > longer works and I use "ssh root@localhost" instead. (I have not tried > SSH to access my CentOS systems remotely yet.) > > Concerning a previous comment: I did not modify the hardware likely > causing this problem. I only have to switch between both disks - > described above - to boot CentOS 5 or CentOS 7. My suspicion is "yum > update" using numerous official and unofficial "repos" installed > something causing this challenge. The login screen of CentOS 5 for user > name and password still works fine. By the way, we develop software > (NMRanalyst) and I try to keep a CentOS 5 system alive so we can test on > it to claim our software is supported on it. When I don't get further > suggestions, I likely re-install another disk with CentOS 5 - this time > using only official repos. > > ThanX for all suggestions! > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- > > > * > David P. Both, RHCE > Millennium Technology Consulting LLC > 919-389-8678 > > db...@millennium-technology.com > > www.millennium-technology.com > www.databook.bz - Home of the DataBook for Linux > DataBook is a Registered Trademark of David Both > * > This communication may be unlawfully collected and stored by the National > Security Agency (NSA) in secret. The parties to this email do not consent to > the retrieving or storing of this communication and any related metadata, as > well as printing, copying, re-transmitting, disseminating, or otherwise using > it. If you believe you have received this communication in error, please > delete it immediately. > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5 takes one second holding each keyboard key until it shows.
On 08/27/2014 06:07 PM, SilverTip257 wrote: > On Tue, Aug 26, 2014 at 10:54 PM, Reinhard Dunkel > wrote: > >> I used CentOS 5 for years. Suddenly, it takes one second holding a >> keyboard key until it shows on the screen: >> >> > Is this system accessible via SSH? > Does the behavior only happen when using the physical keyboard? > > Might it be out of physical memory (RAM) and swapping violently? > Disk thrashing of this sort can cause rather irritating delays. > > Or maybe a failing or failed drive? (Assuming you could have a hardware or > software RAID setup) Does CentOS now only support user request tracking by email? I cannot find this thread on the CentOS web site... My computer has 4 GB Patriot memory - the maximum amount the motherboard allows. Using command "top" shows less than one percent of CPU and memory are in use. The computer is idle. I am using a 1 TB WD disk for CentOS 5 and a 2 TB Seagate disk for CentOS 7. No RAID. On CentOS 5, I use command "su" to show a root shell. On CentOS 7, su no longer works and I use "ssh root@localhost" instead. (I have not tried SSH to access my CentOS systems remotely yet.) Concerning a previous comment: I did not modify the hardware likely causing this problem. I only have to switch between both disks - described above - to boot CentOS 5 or CentOS 7. My suspicion is "yum update" using numerous official and unofficial "repos" installed something causing this challenge. The login screen of CentOS 5 for user name and password still works fine. By the way, we develop software (NMRanalyst) and I try to keep a CentOS 5 system alive so we can test on it to claim our software is supported on it. When I don't get further suggestions, I likely re-install another disk with CentOS 5 - this time using only official repos. ThanX for all suggestions! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5 takes one second holding each keyboard key until it shows.
On Tue, Aug 26, 2014 at 10:54 PM, Reinhard Dunkel wrote: > I used CentOS 5 for years. Suddenly, it takes one second holding a > keyboard key until it shows on the screen: > > Is this system accessible via SSH? Does the behavior only happen when using the physical keyboard? Might it be out of physical memory (RAM) and swapping violently? Disk thrashing of this sort can cause rather irritating delays. Or maybe a failing or failed drive? (Assuming you could have a hardware or software RAID setup). -- ---~~.~~--- Mike // SilverTip257 // ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5 takes one second holding each keyboard key until it shows.
On 08/26/14 22:54, Reinhard Dunkel wrote: > I used CentOS 5 for years. Suddenly, it takes one second holding a > keyboard key until it shows on the screen: Dumb question: have you tried a second keyboard? mark, who tries not to drink over the keyboard > > # uname -a > Linux nitrogen 2.6.18-371.11.1.el5PAE #1 SMP Wed Jul 23 15:54:19 EDT > 2014 i686 i686 i386 GNU/Linux > # xset -q > Keyboard Control: > auto repeat: offkey click percent: 50LED mask: > auto repeat delay: 660repeat rate: 25 > auto repeating keys: 00ffdbbf > fadfffdfffdfe5ef > > > bell percent: 100bell pitch: 800bell duration: 100 > Pointer Control: > acceleration: 20/10threshold: 2 > Screen Saver: > prefer blanking: yesallow exposures: yes > timeout: 0cycle: 600 > Colors: > default colormap: 0x20BlackPixel: 0WhitePixel: 16777215 > Font Path: > unix/:7100,built-ins > Bug Mode: compatibility mode is enabled > DPMS (Energy Star): > Standby: 0Suspend: 1800Off: 1800 > DPMS is Enabled > Monitor is On > Font cache: > Server does not have the FontCache Extension > File paths: > Config file: /etc/X11/xorg.conf > Modules path: /usr/lib/xorg/modules > Log file: /var/log/Xorg.0.log > > I copied the CentOS 5 /etc/X11/xorg.conf to CentOS 7 (on the same > computer) and rebooted - no effect. I copied the CentOS 7 > /etc/X11/xorg.conf.d/00-keyboard.conf to CentOS 5 and rebooted - no > effect. I tried different CentOS 5 xset settings, I tried an IBM Soft > Touch and a Logitech keyboard using different cabeling. What might > resolve this new one second delay for each CentOS 5 keyboard key? What > might have caused it? > > ThanX > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5 takes one second holding each keyboard key until it shows.
> I copied the CentOS 5 /etc/X11/xorg.conf to CentOS 7 (on the same > computer) and rebooted - no effect. I copied the CentOS 7 > /etc/X11/xorg.conf.d/00-keyboard.conf to CentOS 5 and rebooted - no > effect. I tried different CentOS 5 xset settings, I tried an IBM Soft > Touch and a Logitech keyboard using different cabeling. What might > resolve this new one second delay for each CentOS 5 keyboard key? What > might have caused it? Did you change or update any hardware recently? This might be a bit far-fetched, but I observed behaviour like this when connecting a new monitor to a machine running CentOS5 through DVI. I don't recall the details, but the monitor created some kind of interrupt issue that the CentOS5 kernel (5.4 - 2.6.18-164.15.1.el5) couldn't handle. Symptoms were slow-responding keyboard and jerky mouse. If it's something like this, you should see it in the logs. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
