Okay friends if it is the power supply(its a brand new one) or the mains then I have a big problem. What could be the problem? Any suggestions?
Thanks for the help Binny On Fri, Apr 3, 2009 at 10:59 PM, sunil s <[email protected]> wrote: > The same problem exists for windows also > In my previous office, there was a computer which goes to sleep mode and > could'nt recover from that. By experience we learned that there is > something wrong in hardware ( and not that of OS) and changed the > motherboard by the dealer > > > On Fri, Apr 3, 2009 at 11:19 AM, Visakh <[email protected]> wrote: > >> >> Hi, >> >> @BINNY >> The more you describe the problem, the more it appears to me like a >> power supply issue rather than a power management issue. As far as I >> know, all computer CRT monitors are designed to switch off their CRT >> when the video signal form the system disappears. Other than that, >> their CRT power is in no way controlled by the power management system >> of the computer. The monitor supply is directly connected to AC mains- >> even when connected to the rear of the SMPS. Besides, the cable that >> connects the monitor to system (VGA) is analog. It carries not much >> digital info. You can verify this here: >> http://pinouts.ru/Video/VGA15.shtml >> . All these indicate a serious issue somewhere in your power supply >> and the power management system is innocent. For now, however, I would >> recommend avoiding sleep mode till you get your power supply issue >> solved. And as for the frequent monitor on/off - its always slightly >> strenuous - but the monitor manufacturers take care of that. It won't >> cause any realistic damage. >> >> And for the stabilizer - most manual stabilizer have a dial that is >> used to select a voltage range (ie, transformer step-up ratio). They >> still have an automatic negative feedback voltage controller element >> after that. I am not sure how this would affect a UPS connected to it- >> but, it wont be much different from when an automatic stabilizer is >> connected. So I still wouldn't recommend its use. Now the UPS- it is >> designed to isolate the mains and connect the inverted battery source >> when the voltage drops too low. This is not unusual. But if you are >> facing frequent mains drop, better get your mains and UPS checked. >> >> @ Yadu >> I believed you the first time you wrote that there was an 'insane' >> scheme. You didn't have to put the link up here to convince me :) . >> But still, thanks very much for the informative link. If you look >> carefully, you will find that the acpi kernel module was patched to >> make it insane. So it is very unlikely that any distro will use this >> 'insane' patch. But that link is important for me since it has some >> data for me to ponder over. >> >> @ nishandh >> Until recently, Ubuntu and may be other distros had some problems >> with power management- may be due to wrong sequence of power modes. >> But there was nothing that would blow up motherboards or crash and >> burn HDDs. Otherwise, many other competitors, including the 'all >> powerful monopolistic corporation' would have cashed on it. >> >> Regards, >> Gokul Das >> >> > > > > --~--~---------~--~----~------------~-------~--~----~ "Freedom is the only law". "Freedom Unplugged" http://www.ilug-tvm.org You received this message because you are subscribed to the Google Groups "ilug-tvm" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For details visit the website: www.ilug-tvm.org or the google group page: http://groups.google.com/group/ilug-tvm?hl=en -~----------~----~----~----~------~----~------~--~---
