Re: [Lubuntu-desktop] Really odd keyboard and mouse issue
Well I'm sorry one and all, it would appear my troubleshooting was flawed. As much as I took out the KVM from my testing I never actually disconnected the KVM from the computer, just the keyboard and mouse connected to the KVM. I'm now battling the manufacturer for a replacement (it's 13 months old with a 12 month warranty). For some reason even though it had no input devices connected to it it was still upsetting the computer. I'm sorry to have wasted all your time with this and thanks so much for everyone's input, you're a credit to the community. If anyone has any suggestions for a good 4 port USB/DVI KVM I'm all ears (probably better off list or on IRC because it's a bit off topic for this list) because apparently this Aten was a poor choice. Regards, Jared Norris JP(Qual) BBehSc(Psych) https://wiki.ubuntu.com/JaredNorris ___ Mailing list: https://launchpad.net/~lubuntu-desktop Post to : lubuntu-desktop@lists.launchpad.net Unsubscribe : https://launchpad.net/~lubuntu-desktop More help : https://help.launchpad.net/ListHelp
Re: [Lubuntu-desktop] Really odd keyboard and mouse issue
On Wed, 16 Mar 2011 16:04:51 +1000 Jared Norris wrote: > On 16 March 2011 16:00, UndiFineD wrote: > > Somehow I get the feeling 'scheduler' is in place here > > are you running a custom kernel ? > > Not that I'm aware of, uname -r suggests my current kernel is > 2.6.35-27 generic pae. I'm not knowledgeable enough to start rolling > my own. > Why the pae kernel, do you have more than 4 GiB of RAM, of not try the generic kernel. Is it USB keyboard and mouse? Have a look at the makers site and see if there is a BIOS update for this or similar problems. Has the machine had a good clean lately, it's surprising what dust (dead skin) can do to computers. Nearly half the intermittent problems I deal with are cured by a good clean. Reseating connectors and memory also cures a large percentage of problems. -- Yorvyk ___ Mailing list: https://launchpad.net/~lubuntu-desktop Post to : lubuntu-desktop@lists.launchpad.net Unsubscribe : https://launchpad.net/~lubuntu-desktop More help : https://help.launchpad.net/ListHelp
Re: [Lubuntu-desktop] Really odd keyboard and mouse issue
On 16 March 2011 16:00, UndiFineD wrote: > Somehow I get the feeling 'scheduler' is in place here > are you running a custom kernel ? Not that I'm aware of, uname -r suggests my current kernel is 2.6.35-27 generic pae. I'm not knowledgeable enough to start rolling my own. Regards, Jared Norris JP(Qual) BBehSc(Psych) https://wiki.ubuntu.com/JaredNorris ___ Mailing list: https://launchpad.net/~lubuntu-desktop Post to : lubuntu-desktop@lists.launchpad.net Unsubscribe : https://launchpad.net/~lubuntu-desktop More help : https://help.launchpad.net/ListHelp
Re: [Lubuntu-desktop] Really odd keyboard and mouse issue
Somehow I get the feeling 'scheduler' is in place here are you running a custom kernel ? 2011/3/16 Jared Norris : >> How often is "every now and then"? Once a day? Once a month? :) If it >> is very infrequent, you will probably need to run monitoring tools all >> the time, so you can "catch it in the act". >> > > The computer is on 24/7 but I'm obviously not at it, so for example > today it has done it 3 times while I'm at the computer already in the > space of a few hours. Other days it's not at all. > >> (1) Based on the above, I would suggest running system monitoring tools >> to check what else the machine is doing when it is lagging your >> keyboard/mouse input. htop, iotop, jnettop will do for simple >> text-based "what is doing a lot of work on my PC" checking. vmstat and >> iostat might be worth a look too. > > I completely forgot about iotop, I've been running htop and can't see > anything, the CPU is idling along at 1 - 3 % (3.2 P4 Prescott) and the > RAM is using around 20% (2GB). Last time I had a really weird problem > with a computer it turned out to be a faulty CPU cooler connection so > I've been keeping an eye to the temps and they are all fine. > > >> (2) If you are comfortable working at the command line, you could also >> consider running the machine with no GUI (no X) -- no LXDE stuff at all, >> just plain old text mode consoles) for a while. If the issue goes away, >> you would then suspect that whatever is causing the problem is X related >> in some way. With enough time, you could then start X and run just an >> xterm or LXterminal window and see if that lags or not... and so on... >> slowly building back up towards a full LXDE GUI. Knowing what was added >> that started the problem up again would be a very big clue. > > Ah I was hoping this would have been tested with the SSH because this > is my main IRC, IM, Web Browsing and Email machine here at home. > >> (3) If you have another spare test machine, try setting it up as close >> to identical to the first one as you can, documenting how to do that >> step by step. Then, see if you can reproduce the problem on the second >> machine too. If you can reproduce it there, you now have accurate and >> tested step-by-step "how to reproduce" information for the bug report, >> which could be very handy for others trying to duplicate and track down >> the issue :) >> Realistically, this kind of "weird stuff happens occasionally" issue is >> going to be hard to track down. Hopefully the above suggestions will >> help, if you decide you have the patience to really work on doing that. > > Thanks for your thoughts I have already started up iotop so I'll see > how that goes. I was half hoping there would be a "oh I had that > problem and did this" solution, but I think that was a bit of wishful > thinking. I will make sure I let everyone know if I find a solution > though as this is really odd. Feel free to keep the suggestions > coming, it's really bugging me. > > > Regards, > > Jared Norris JP(Qual) BBehSc(Psych) > https://wiki.ubuntu.com/JaredNorris > > ___ > Mailing list: https://launchpad.net/~lubuntu-desktop > Post to : lubuntu-desktop@lists.launchpad.net > Unsubscribe : https://launchpad.net/~lubuntu-desktop > More help : https://help.launchpad.net/ListHelp > -- Met vriendelijke groeten, Keimpe de Jong (UndiFineD) ___ Mailing list: https://launchpad.net/~lubuntu-desktop Post to : lubuntu-desktop@lists.launchpad.net Unsubscribe : https://launchpad.net/~lubuntu-desktop More help : https://help.launchpad.net/ListHelp
Re: [Lubuntu-desktop] Really odd keyboard and mouse issue
> How often is "every now and then"? Once a day? Once a month? :) If it > is very infrequent, you will probably need to run monitoring tools all > the time, so you can "catch it in the act". > The computer is on 24/7 but I'm obviously not at it, so for example today it has done it 3 times while I'm at the computer already in the space of a few hours. Other days it's not at all. > (1) Based on the above, I would suggest running system monitoring tools > to check what else the machine is doing when it is lagging your > keyboard/mouse input. htop, iotop, jnettop will do for simple > text-based "what is doing a lot of work on my PC" checking. vmstat and > iostat might be worth a look too. I completely forgot about iotop, I've been running htop and can't see anything, the CPU is idling along at 1 - 3 % (3.2 P4 Prescott) and the RAM is using around 20% (2GB). Last time I had a really weird problem with a computer it turned out to be a faulty CPU cooler connection so I've been keeping an eye to the temps and they are all fine. > (2) If you are comfortable working at the command line, you could also > consider running the machine with no GUI (no X) -- no LXDE stuff at all, > just plain old text mode consoles) for a while. If the issue goes away, > you would then suspect that whatever is causing the problem is X related > in some way. With enough time, you could then start X and run just an > xterm or LXterminal window and see if that lags or not... and so on... > slowly building back up towards a full LXDE GUI. Knowing what was added > that started the problem up again would be a very big clue. Ah I was hoping this would have been tested with the SSH because this is my main IRC, IM, Web Browsing and Email machine here at home. > (3) If you have another spare test machine, try setting it up as close > to identical to the first one as you can, documenting how to do that > step by step. Then, see if you can reproduce the problem on the second > machine too. If you can reproduce it there, you now have accurate and > tested step-by-step "how to reproduce" information for the bug report, > which could be very handy for others trying to duplicate and track down > the issue :) > Realistically, this kind of "weird stuff happens occasionally" issue is > going to be hard to track down. Hopefully the above suggestions will > help, if you decide you have the patience to really work on doing that. Thanks for your thoughts I have already started up iotop so I'll see how that goes. I was half hoping there would be a "oh I had that problem and did this" solution, but I think that was a bit of wishful thinking. I will make sure I let everyone know if I find a solution though as this is really odd. Feel free to keep the suggestions coming, it's really bugging me. Regards, Jared Norris JP(Qual) BBehSc(Psych) https://wiki.ubuntu.com/JaredNorris ___ Mailing list: https://launchpad.net/~lubuntu-desktop Post to : lubuntu-desktop@lists.launchpad.net Unsubscribe : https://launchpad.net/~lubuntu-desktop More help : https://help.launchpad.net/ListHelp
Re: [Lubuntu-desktop] Really odd keyboard and mouse issue
On 03/15/2011 06:16 PM, Jared Norris wrote: > I am experiencing some really odd behaviour lately and I wanted some > ideas on how to troubleshoot it further. Every now and then, > seemingly randomly, the mouse and keyboard will really start to lag, How often is "every now and then"? Once a day? Once a month? :) If it is very infrequent, you will probably need to run monitoring tools all the time, so you can "catch it in the act". > ...The second test was to SSH into the machine and the input is > severley lagged ... If SSH shell response time is affected, then I would think you have shown that it is not "just the keyboard and mouse", since you were using a different keyboard and mouse on a different PC at that point. In that case, either the issue is "keyboard, mouse and network" (which would be fairly odd), or the machine is busy doing something else when you are seeing the lag. A really large disk i/o load can make Linux boxes pretty unresponsive, especially for machines with just one PATA or SATA hard drive. > ...can anyone suggest how I can trouble shoot this problem further? (1) Based on the above, I would suggest running system monitoring tools to check what else the machine is doing when it is lagging your keyboard/mouse input. htop, iotop, jnettop will do for simple text-based "what is doing a lot of work on my PC" checking. vmstat and iostat might be worth a look too. (2) If you are comfortable working at the command line, you could also consider running the machine with no GUI (no X) -- no LXDE stuff at all, just plain old text mode consoles) for a while. If the issue goes away, you would then suspect that whatever is causing the problem is X related in some way. With enough time, you could then start X and run just an xterm or LXterminal window and see if that lags or not... and so on... slowly building back up towards a full LXDE GUI. Knowing what was added that started the problem up again would be a very big clue. (3) If you have another spare test machine, try setting it up as close to identical to the first one as you can, documenting how to do that step by step. Then, see if you can reproduce the problem on the second machine too. If you can reproduce it there, you now have accurate and tested step-by-step "how to reproduce" information for the bug report, which could be very handy for others trying to duplicate and track down the issue :) Realistically, this kind of "weird stuff happens occasionally" issue is going to be hard to track down. Hopefully the above suggestions will help, if you decide you have the patience to really work on doing that. Jonathan ___ Mailing list: https://launchpad.net/~lubuntu-desktop Post to : lubuntu-desktop@lists.launchpad.net Unsubscribe : https://launchpad.net/~lubuntu-desktop More help : https://help.launchpad.net/ListHelp
